diff options
author | Mattias Andrée <maandree@kth.se> | 2021-02-19 22:10:26 +0100 |
---|---|---|
committer | Mattias Andrée <maandree@kth.se> | 2021-02-19 22:10:26 +0100 |
commit | ec7baa81e8fd4bec924d6adf3ee880af621a10ba (patch) | |
tree | 700434a1a65c55584dff270ed45e4bdfd46f6ab3 /doc/info | |
parent | Add blue hour (diff) | |
download | solar-python-ec7baa81e8fd4bec924d6adf3ee880af621a10ba.tar.gz solar-python-ec7baa81e8fd4bec924d6adf3ee880af621a10ba.tar.bz2 solar-python-ec7baa81e8fd4bec924d6adf3ee880af621a10ba.tar.xz |
Imrpove makefile and flatten the hier a bit
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'doc/info')
-rw-r--r-- | doc/info/fdl.texinfo | 505 | ||||
-rw-r--r-- | doc/info/solar-python.texinfo | 511 |
2 files changed, 0 insertions, 1016 deletions
diff --git a/doc/info/fdl.texinfo b/doc/info/fdl.texinfo deleted file mode 100644 index cb71f05..0000000 --- a/doc/info/fdl.texinfo +++ /dev/null @@ -1,505 +0,0 @@ -@c The GNU Free Documentation License. -@center Version 1.3, 3 November 2008 - -@c This file is intended to be included within another document, -@c hence no sectioning command or @node. - -@display -Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. -@uref{http://fsf.org/} - -Everyone is permitted to copy and distribute verbatim copies -of this license document, but changing it is not allowed. -@end display - -@enumerate 0 -@item -PREAMBLE - -The purpose of this License is to make a manual, textbook, or other -functional and useful document @dfn{free} in the sense of freedom: to -assure everyone the effective freedom to copy and redistribute it, -with or without modifying it, either commercially or noncommercially. -Secondarily, this License preserves for the author and publisher a way -to get credit for their work, while not being considered responsible -for modifications made by others. - -This License is a kind of ``copyleft'', which means that derivative -works of the document must themselves be free in the same sense. It -complements the GNU General Public License, which is a copyleft -license designed for free software. - -We have designed this License in order to use it for manuals for free -software, because free software needs free documentation: a free -program should come with manuals providing the same freedoms that the -software does. But this License is not limited to software manuals; -it can be used for any textual work, regardless of subject matter or -whether it is published as a printed book. We recommend this License -principally for works whose purpose is instruction or reference. - -@item -APPLICABILITY AND DEFINITIONS - -This License applies to any manual or other work, in any medium, that -contains a notice placed by the copyright holder saying it can be -distributed under the terms of this License. Such a notice grants a -world-wide, royalty-free license, unlimited in duration, to use that -work under the conditions stated herein. The ``Document'', below, -refers to any such manual or work. Any member of the public is a -licensee, and is addressed as ``you''. You accept the license if you -copy, modify or distribute the work in a way requiring permission -under copyright law. - -A ``Modified Version'' of the Document means any work containing the -Document or a portion of it, either copied verbatim, or with -modifications and/or translated into another language. - -A ``Secondary Section'' is a named appendix or a front-matter section -of the Document that deals exclusively with the relationship of the -publishers or authors of the Document to the Document's overall -subject (or to related matters) and contains nothing that could fall -directly within that overall subject. (Thus, if the Document is in -part a textbook of mathematics, a Secondary Section may not explain -any mathematics.) The relationship could be a matter of historical -connection with the subject or with related matters, or of legal, -commercial, philosophical, ethical or political position regarding -them. - -The ``Invariant Sections'' are certain Secondary Sections whose titles -are designated, as being those of Invariant Sections, in the notice -that says that the Document is released under this License. If a -section does not fit the above definition of Secondary then it is not -allowed to be designated as Invariant. The Document may contain zero -Invariant Sections. If the Document does not identify any Invariant -Sections then there are none. - -The ``Cover Texts'' are certain short passages of text that are listed, -as Front-Cover Texts or Back-Cover Texts, in the notice that says that -the Document is released under this License. A Front-Cover Text may -be at most 5 words, and a Back-Cover Text may be at most 25 words. - -A ``Transparent'' copy of the Document means a machine-readable copy, -represented in a format whose specification is available to the -general public, that is suitable for revising the document -straightforwardly with generic text editors or (for images composed of -pixels) generic paint programs or (for drawings) some widely available -drawing editor, and that is suitable for input to text formatters or -for automatic translation to a variety of formats suitable for input -to text formatters. A copy made in an otherwise Transparent file -format whose markup, or absence of markup, has been arranged to thwart -or discourage subsequent modification by readers is not Transparent. -An image format is not Transparent if used for any substantial amount -of text. A copy that is not ``Transparent'' is called ``Opaque''. - -Examples of suitable formats for Transparent copies include plain -ASCII without markup, Texinfo input format, La@TeX{} input -format, SGML or XML using a publicly available -DTD, and standard-conforming simple HTML, -PostScript or PDF designed for human modification. Examples -of transparent image formats include PNG, XCF and -JPG. Opaque formats include proprietary formats that can be -read and edited only by proprietary word processors, SGML or -XML for which the DTD and/or processing tools are -not generally available, and the machine-generated HTML, -PostScript or PDF produced by some word processors for -output purposes only. - -The ``Title Page'' means, for a printed book, the title page itself, -plus such following pages as are needed to hold, legibly, the material -this License requires to appear in the title page. For works in -formats which do not have any title page as such, ``Title Page'' means -the text near the most prominent appearance of the work's title, -preceding the beginning of the body of the text. - -The ``publisher'' means any person or entity that distributes copies -of the Document to the public. - -A section ``Entitled XYZ'' means a named subunit of the Document whose -title either is precisely XYZ or contains XYZ in parentheses following -text that translates XYZ in another language. (Here XYZ stands for a -specific section name mentioned below, such as ``Acknowledgements'', -``Dedications'', ``Endorsements'', or ``History''.) To ``Preserve the Title'' -of such a section when you modify the Document means that it remains a -section ``Entitled XYZ'' according to this definition. - -The Document may include Warranty Disclaimers next to the notice which -states that this License applies to the Document. These Warranty -Disclaimers are considered to be included by reference in this -License, but only as regards disclaiming warranties: any other -implication that these Warranty Disclaimers may have is void and has -no effect on the meaning of this License. - -@item -VERBATIM COPYING - -You may copy and distribute the Document in any medium, either -commercially or noncommercially, provided that this License, the -copyright notices, and the license notice saying this License applies -to the Document are reproduced in all copies, and that you add no other -conditions whatsoever to those of this License. You may not use -technical measures to obstruct or control the reading or further -copying of the copies you make or distribute. However, you may accept -compensation in exchange for copies. If you distribute a large enough -number of copies you must also follow the conditions in section 3. - -You may also lend copies, under the same conditions stated above, and -you may publicly display copies. - -@item -COPYING IN QUANTITY - -If you publish printed copies (or copies in media that commonly have -printed covers) of the Document, numbering more than 100, and the -Document's license notice requires Cover Texts, you must enclose the -copies in covers that carry, clearly and legibly, all these Cover -Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on -the back cover. Both covers must also clearly and legibly identify -you as the publisher of these copies. The front cover must present -the full title with all words of the title equally prominent and -visible. You may add other material on the covers in addition. -Copying with changes limited to the covers, as long as they preserve -the title of the Document and satisfy these conditions, can be treated -as verbatim copying in other respects. - -If the required texts for either cover are too voluminous to fit -legibly, you should put the first ones listed (as many as fit -reasonably) on the actual cover, and continue the rest onto adjacent -pages. - -If you publish or distribute Opaque copies of the Document numbering -more than 100, you must either include a machine-readable Transparent -copy along with each Opaque copy, or state in or with each Opaque copy -a computer-network location from which the general network-using -public has access to download using public-standard network protocols -a complete Transparent copy of the Document, free of added material. -If you use the latter option, you must take reasonably prudent steps, -when you begin distribution of Opaque copies in quantity, to ensure -that this Transparent copy will remain thus accessible at the stated -location until at least one year after the last time you distribute an -Opaque copy (directly or through your agents or retailers) of that -edition to the public. - -It is requested, but not required, that you contact the authors of the -Document well before redistributing any large number of copies, to give -them a chance to provide you with an updated version of the Document. - -@item -MODIFICATIONS - -You may copy and distribute a Modified Version of the Document under -the conditions of sections 2 and 3 above, provided that you release -the Modified Version under precisely this License, with the Modified -Version filling the role of the Document, thus licensing distribution -and modification of the Modified Version to whoever possesses a copy -of it. In addition, you must do these things in the Modified Version: - -@enumerate A -@item -Use in the Title Page (and on the covers, if any) a title distinct -from that of the Document, and from those of previous versions -(which should, if there were any, be listed in the History section -of the Document). You may use the same title as a previous version -if the original publisher of that version gives permission. - -@item -List on the Title Page, as authors, one or more persons or entities -responsible for authorship of the modifications in the Modified -Version, together with at least five of the principal authors of the -Document (all of its principal authors, if it has fewer than five), -unless they release you from this requirement. - -@item -State on the Title page the name of the publisher of the -Modified Version, as the publisher. - -@item -Preserve all the copyright notices of the Document. - -@item -Add an appropriate copyright notice for your modifications -adjacent to the other copyright notices. - -@item -Include, immediately after the copyright notices, a license notice -giving the public permission to use the Modified Version under the -terms of this License, in the form shown in the Addendum below. - -@item -Preserve in that license notice the full lists of Invariant Sections -and required Cover Texts given in the Document's license notice. - -@item -Include an unaltered copy of this License. - -@item -Preserve the section Entitled ``History'', Preserve its Title, and add -to it an item stating at least the title, year, new authors, and -publisher of the Modified Version as given on the Title Page. If -there is no section Entitled ``History'' in the Document, create one -stating the title, year, authors, and publisher of the Document as -given on its Title Page, then add an item describing the Modified -Version as stated in the previous sentence. - -@item -Preserve the network location, if any, given in the Document for -public access to a Transparent copy of the Document, and likewise -the network locations given in the Document for previous versions -it was based on. These may be placed in the ``History'' section. -You may omit a network location for a work that was published at -least four years before the Document itself, or if the original -publisher of the version it refers to gives permission. - -@item -For any section Entitled ``Acknowledgements'' or ``Dedications'', Preserve -the Title of the section, and preserve in the section all the -substance and tone of each of the contributor acknowledgements and/or -dedications given therein. - -@item -Preserve all the Invariant Sections of the Document, -unaltered in their text and in their titles. Section numbers -or the equivalent are not considered part of the section titles. - -@item -Delete any section Entitled ``Endorsements''. Such a section -may not be included in the Modified Version. - -@item -Do not retitle any existing section to be Entitled ``Endorsements'' or -to conflict in title with any Invariant Section. - -@item -Preserve any Warranty Disclaimers. -@end enumerate - -If the Modified Version includes new front-matter sections or -appendices that qualify as Secondary Sections and contain no material -copied from the Document, you may at your option designate some or all -of these sections as invariant. To do this, add their titles to the -list of Invariant Sections in the Modified Version's license notice. -These titles must be distinct from any other section titles. - -You may add a section Entitled ``Endorsements'', provided it contains -nothing but endorsements of your Modified Version by various -parties---for example, statements of peer review or that the text has -been approved by an organization as the authoritative definition of a -standard. - -You may add a passage of up to five words as a Front-Cover Text, and a -passage of up to 25 words as a Back-Cover Text, to the end of the list -of Cover Texts in the Modified Version. Only one passage of -Front-Cover Text and one of Back-Cover Text may be added by (or -through arrangements made by) any one entity. If the Document already -includes a cover text for the same cover, previously added by you or -by arrangement made by the same entity you are acting on behalf of, -you may not add another; but you may replace the old one, on explicit -permission from the previous publisher that added the old one. - -The author(s) and publisher(s) of the Document do not by this License -give permission to use their names for publicity for or to assert or -imply endorsement of any Modified Version. - -@item -COMBINING DOCUMENTS - -You may combine the Document with other documents released under this -License, under the terms defined in section 4 above for modified -versions, provided that you include in the combination all of the -Invariant Sections of all of the original documents, unmodified, and -list them all as Invariant Sections of your combined work in its -license notice, and that you preserve all their Warranty Disclaimers. - -The combined work need only contain one copy of this License, and -multiple identical Invariant Sections may be replaced with a single -copy. If there are multiple Invariant Sections with the same name but -different contents, make the title of each such section unique by -adding at the end of it, in parentheses, the name of the original -author or publisher of that section if known, or else a unique number. -Make the same adjustment to the section titles in the list of -Invariant Sections in the license notice of the combined work. - -In the combination, you must combine any sections Entitled ``History'' -in the various original documents, forming one section Entitled -``History''; likewise combine any sections Entitled ``Acknowledgements'', -and any sections Entitled ``Dedications''. You must delete all -sections Entitled ``Endorsements.'' - -@item -COLLECTIONS OF DOCUMENTS - -You may make a collection consisting of the Document and other documents -released under this License, and replace the individual copies of this -License in the various documents with a single copy that is included in -the collection, provided that you follow the rules of this License for -verbatim copying of each of the documents in all other respects. - -You may extract a single document from such a collection, and distribute -it individually under this License, provided you insert a copy of this -License into the extracted document, and follow this License in all -other respects regarding verbatim copying of that document. - -@item -AGGREGATION WITH INDEPENDENT WORKS - -A compilation of the Document or its derivatives with other separate -and independent documents or works, in or on a volume of a storage or -distribution medium, is called an ``aggregate'' if the copyright -resulting from the compilation is not used to limit the legal rights -of the compilation's users beyond what the individual works permit. -When the Document is included in an aggregate, this License does not -apply to the other works in the aggregate which are not themselves -derivative works of the Document. - -If the Cover Text requirement of section 3 is applicable to these -copies of the Document, then if the Document is less than one half of -the entire aggregate, the Document's Cover Texts may be placed on -covers that bracket the Document within the aggregate, or the -electronic equivalent of covers if the Document is in electronic form. -Otherwise they must appear on printed covers that bracket the whole -aggregate. - -@item -TRANSLATION - -Translation is considered a kind of modification, so you may -distribute translations of the Document under the terms of section 4. -Replacing Invariant Sections with translations requires special -permission from their copyright holders, but you may include -translations of some or all Invariant Sections in addition to the -original versions of these Invariant Sections. You may include a -translation of this License, and all the license notices in the -Document, and any Warranty Disclaimers, provided that you also include -the original English version of this License and the original versions -of those notices and disclaimers. In case of a disagreement between -the translation and the original version of this License or a notice -or disclaimer, the original version will prevail. - -If a section in the Document is Entitled ``Acknowledgements'', -``Dedications'', or ``History'', the requirement (section 4) to Preserve -its Title (section 1) will typically require changing the actual -title. - -@item -TERMINATION - -You may not copy, modify, sublicense, or distribute the Document -except as expressly provided under this License. Any attempt -otherwise to copy, modify, sublicense, or distribute it is void, and -will automatically terminate your rights under this License. - -However, if you cease all violation of this License, then your license -from a particular copyright holder is reinstated (a) provisionally, -unless and until the copyright holder explicitly and finally -terminates your license, and (b) permanently, if the copyright holder -fails to notify you of the violation by some reasonable means prior to -60 days after the cessation. - -Moreover, your license from a particular copyright holder is -reinstated permanently if the copyright holder notifies you of the -violation by some reasonable means, this is the first time you have -received notice of violation of this License (for any work) from that -copyright holder, and you cure the violation prior to 30 days after -your receipt of the notice. - -Termination of your rights under this section does not terminate the -licenses of parties who have received copies or rights from you under -this License. If your rights have been terminated and not permanently -reinstated, receipt of a copy of some or all of the same material does -not give you any rights to use it. - -@item -FUTURE REVISIONS OF THIS LICENSE - -The Free Software Foundation may publish new, revised versions -of the GNU Free Documentation License from time to time. Such new -versions will be similar in spirit to the present version, but may -differ in detail to address new problems or concerns. See -@uref{http://www.gnu.org/copyleft/}. - -Each version of the License is given a distinguishing version number. -If the Document specifies that a particular numbered version of this -License ``or any later version'' applies to it, you have the option of -following the terms and conditions either of that specified version or -of any later version that has been published (not as a draft) by the -Free Software Foundation. If the Document does not specify a version -number of this License, you may choose any version ever published (not -as a draft) by the Free Software Foundation. If the Document -specifies that a proxy can decide which future versions of this -License can be used, that proxy's public statement of acceptance of a -version permanently authorizes you to choose that version for the -Document. - -@item -RELICENSING - -``Massive Multiauthor Collaboration Site'' (or ``MMC Site'') means any -World Wide Web server that publishes copyrightable works and also -provides prominent facilities for anybody to edit those works. A -public wiki that anybody can edit is an example of such a server. A -``Massive Multiauthor Collaboration'' (or ``MMC'') contained in the -site means any set of copyrightable works thus published on the MMC -site. - -``CC-BY-SA'' means the Creative Commons Attribution-Share Alike 3.0 -license published by Creative Commons Corporation, a not-for-profit -corporation with a principal place of business in San Francisco, -California, as well as future copyleft versions of that license -published by that same organization. - -``Incorporate'' means to publish or republish a Document, in whole or -in part, as part of another Document. - -An MMC is ``eligible for relicensing'' if it is licensed under this -License, and if all works that were first published under this License -somewhere other than this MMC, and subsequently incorporated in whole -or in part into the MMC, (1) had no cover texts or invariant sections, -and (2) were thus incorporated prior to November 1, 2008. - -The operator of an MMC Site may republish an MMC contained in the site -under CC-BY-SA on the same site at any time before August 1, 2009, -provided the MMC is eligible for relicensing. - -@end enumerate - -@page -@heading ADDENDUM: How to use this License for your documents - -To use this License in a document you have written, include a copy of -the License in the document and put the following copyright and -license notices just after the title page: - -@smallexample -@group - Copyright (C) @var{year} @var{your name}. - Permission is granted to copy, distribute and/or modify this document - under the terms of the GNU Free Documentation License, Version 1.3 - or any later version published by the Free Software Foundation; - with no Invariant Sections, no Front-Cover Texts, and no Back-Cover - Texts. A copy of the license is included in the section entitled ``GNU - Free Documentation License''. -@end group -@end smallexample - -If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, -replace the ``with@dots{}Texts.''@: line with this: - -@smallexample -@group - with the Invariant Sections being @var{list their titles}, with - the Front-Cover Texts being @var{list}, and with the Back-Cover Texts - being @var{list}. -@end group -@end smallexample - -If you have Invariant Sections without Cover Texts, or some other -combination of the three, merge those two alternatives to suit the -situation. - -If your document contains nontrivial examples of program code, we -recommend releasing these examples in parallel under your choice of -free software license, such as the GNU General Public License, -to permit their use in free software. - -@c Local Variables: -@c ispell-local-pdict: "ispell-dict" -@c End: diff --git a/doc/info/solar-python.texinfo b/doc/info/solar-python.texinfo deleted file mode 100644 index e33d6e0..0000000 --- a/doc/info/solar-python.texinfo +++ /dev/null @@ -1,511 +0,0 @@ -\input texinfo @c -*-texinfo-*- - -@c %**start of header -@setfilename solar-python.info -@settitle solar-python -@afourpaper -@documentencoding UTF-8 -@documentlanguage en -@finalout -@c %**end of header - - -@dircategory Astronomy -@direntry -* solar-python: (solar-python). Solar data calculation and prediction library for Python -@end direntry - - -@copying -Copyright @copyright{} 2015 Mattias Andrée - -@quotation -Permission is granted to copy, distribute and/or modify this document -under the terms of the GNU Free Documentation License, Version 1.3 or -any later version published by the Free Software Foundation; with no -Invariant Sections, with no Front-Cover Texts, and with no Back-Cover -Texts. A copy of the license is included in the section entitled -``GNU Free Documentation License''. -@end quotation -@end copying - -@ifnottex -@node Top -@top solar-python -- Solar data calculation and prediction library for Python -@insertcopying -@end ifnottex - -@titlepage -@title solar-python -@subtitle Solar data calculation and prediction library for Python -@author by Mattias Andrée (maandree) - -@page -@vskip 0pt plus 1filll -@insertcopying -@page -@end titlepage - -@contents - - - -@menu -* Overview:: Brief overview of @command{solar-python}. -* Constants:: List of constants. -* Calendar functions:: List of calendar functions. -* Observation functions:: List of solar data observation functions. -* Prediction functions:: List of solar data prediction functions. -* Miscellaneous functions:: List of miscellaneous functions. -* GNU Free Documentation License:: Copying and sharing this manual. -@end menu - - - -@node Overview -@chapter Overview - -@command{solar-python} is Python 3 library that can -be used to calculate information about the Sun's -position and related data and predict at when time -solar events occur. - -Import the module @code{solar_python} to use the -library. - -Documentation is available by the command @code{help} -in python. - - - -@node Constants -@chapter Constants - -Importing @code{solar_python} makes the following -constants available: - -@table @code -@item SOLAR_APPARENT_RADIUS = 32.0 / 60.0 -Approximate apparent size of the Sun in degrees. - -@item SOLAR_ELEVATION_PRESUNSET_POSTSUNRISE = 32.0 / 60.0 -The Sun's elevation at beginning of sunset -and end of sunrise, measured in degrees. - -@item SOLAR_ELEVATION_SUNSET_SUNRISE = -32.0 / 60.0 -The Sun's elevation at (end of) sunset and -(beginning of) sunrise, measured in degrees. - -@item SOLAR_ELEVATION_CIVIL_DUSK_DAWN = -6.0 -The Sun's elevation at civil dusk and civil dawn, -measured in degrees - -@item SOLAR_ELEVATION_NAUTICAL_DUSK_DAWN = -12.0 -The Sun's elevation at nautical dusk and nautical -dawn, measured in degrees - -@item SOLAR_ELEVATION_ASTRONOMICAL_DUSK_DAWN = -18.0 -The Sun's elevation at astronomical dusk and -astronomical dawn, measured in degrees - -@item SOLAR_ELEVATION_AMATEUR_ASTRONOMICAL_DUSK_DAWN = -15.0 -The Sun's elevation at amateur astronomical dusk and -amateur astronomical dawn, measured in degrees - -@item SOLAR_ELEVATION_RANGE_TWILIGHT = (-18.0, 0.0) -The Sun's lowest and highest elevation during all -periods of twilight, measured in degrees - -@item SOLAR_ELEVATION_RANGE_CIVIL_TWILIGHT = (-6.0, -32.0 / 60.0) -The Sun's lowest and highest elevation during -civil twilight, measured in degrees - -@item SOLAR_ELEVATION_RANGE_NAUTICAL_TWILIGHT = (-12.0, -32.0 / 60.0) -The Sun's lowest and highest elevation during -nautical twilight, measured in degrees - -@item SOLAR_ELEVATION_RANGE_ASTRONOMICAL_TWILIGHT = (-18.0, -32.0 / 60.0) -The Sun's lowest and highest elevation during -astronomical twilight, measured in degrees - -@item SOLAR_ELEVATION_RANGE_AMATEUR_ASTRONOMICAL_TWILIGHT = (-15.0, -32.0 / 60.0) -The Sun's lowest and highest elevation during -amateur astronomical twilight, measured in degrees - -@item SOLAR_ELEVATION_RANGE_GOLDEN_HOUR = (-4.0, 6.0) -The Sun's lowest and highest elevation during -the golden hour (magic hour), measured in degrees. -These elevations are approximate. - -@item SOLAR_ELEVATION_RANGE_BLUE_HOUR = (-6.0, -4.0) -The Sun's lowest and highest elevation during -the blue hour, measured in degrees. These -elevations are approximate. -@end table - - - -@node Calendar functions -@chapter Calendar functions - -Importing @code{solar_python} makes the following -calendar conversion functions available. All -parameters are of the type @code{float}, and -all functions return @code{float} except where -noted otherwise. - -@table @code -@item julian_day_to_epoch(t) -Converts a Julian Day timestamp, @code{t}, to a POSIX time timestamp. - -@item epoch_to_julian_day(t) -Converts a POSIX time timestamp, @code{t}, to a Julian Day timestamp - -@item julian_day_to_julian_centuries(t) -Converts a Julian Day timestamp, @code{t}, to a Julian Centuries timestamp. - -@item julian_centuries_to_julian_day(t) -Converts a Julian Centuries timestamp, @code{t}, to a Julian Day timestamp. - -@item epoch_to_julian_centuries(t) -Converts a POSIX time timestamp, @code{t}, to a Julian Centuries timestamp. - -@item julian_centuries_to_epoch(t) -Converts a Julian Centuries timestamp, @code{t}, to a POSIX time timestamp. -@end table - -@code{solar_python} also makes the following -functions available. All parameters are of the -type @code{float}, and all functions return -@code{float}. - -@table @code -@item epoch() -Get current POSIX time. - -@item julian_day() -Get current Julian Day time. - -@item julian_centuries() -Get current Julian Centuries time (100 Julian days since J2000.) -@end table - - - -@node Observation functions -@chapter Observation functions - -Importing @code{solar_python} makes the following -solar data observation functions available. All -parameters are of the type @code{float}, and -all functions return @code{float}. All parameters -named @code{t} or @code{noon} is the time in -Julian Centuries. These are low-level functions. - -@table @code -@item sun_geometric_mean_longitude(t) -Calculates the Sun's geometric mean longitude. - -@item sun_geometric_mean_anomaly(t) -Calculates the Sun's geometric mean anomaly, in radians. - -@item earth_orbit_eccentricity(t) -Calculates the Earth's orbit eccentricity. - -@item sun_equation_of_centre(t) -Calculates the Sun's equation of the centre --- the -difference between the true anomaly and the mean -anomaly --- in radians. - -@item sun_real_longitude(t) -Calculates the Sun's real longitudinal position, in radians. - -@item sun_apparent_longitude(t) -Calculates the Sun's apparent longitudinal position, in radians. - -@item mean_ecliptic_obliquity(t) -Calculates the uncorrected mean ecliptic obliquity of the Sun's -apparent motion without variation correction, in radians. - -@item corrected_mean_ecliptic_obliquity(t) -Calculates the mean ecliptic obliquity of the Sun's apparent -motion with variation correction, in radians. - -@item solar_declination(t) -Calculates the Sun's declination, in radians. - -@item equation_of_time(t) -Calculates the equation of time --- the discrepancy -between apparent and mean solar time --- in degrees. - -@item hour_angle_from_elevation(latitude, declination, elevation) -Calculates the solar hour angle, in radians, from the Sun's -elevation, in radians. The Sun's elevation is gived by the -parameter @code{elevation}. This functions requires two -additional parameters: -@table @code -@item longitude -The longitude in degrees eastwards from Greenwich, -negative for westwards. -@item declination -The declination, in radians. -@end table - -@item elevation_from_hour_angle(latitude, declination, hour_angle) -Calculates the Sun's elevation, in radians, from the solar -hour angle, in radians. The solar hour angle is gived by the -parameter @code{hour_angle}. This functions requires two -additional parameters: -@table @code -@item longitude -The longitude in degrees eastwards from Greenwich, -negative for westwards. -@item declination -The declination, in radians. -@end table - -@item time_of_solar_noon(t, longitude) -Calculates the time, in Julian Centuries, of the solar -noon the closest to the time @code{t}. This functions -requires one additional parameter: -@table @code -@item longitude -The longitude in degrees eastwards from Greenwich, -negative for westwards. -@end table - -@item time_of_solar_elevation(t, noon, latitude, longitude, elevation) -Calculates the time, in Julian Centuries, the Sun has -a specified apparent elevation, expressed in radians -via the parameter @code{elevation}, at a geographical -position, expressed in degrees by the parameters: -@table @code -@item latitude -The latitude in degrees northwards from the equator, -negative for southwards. -@item longitude -The longitude in degrees eastwards from Greenwich, -negative for westwards. -@end table -@noindent -The function require two additional parameter: -@table @code -@item t -A time, in Julian Centuries, close to the sought time. -@item noon -The time, in Julian Centuries, of the closest solar noon. -@end table - -@item solar_elevation_from_time(t, latitude, longitude): -Calculates the Sun's elevation, in radians, as apparent -from a geographical position, expressed in degrees by the -parameters: -@table @code -@item latitude -The latitude in degrees northwards from the equator, -negative for southwards. -@item longitude -The longitude in degrees eastwards from Greenwich, -negative for westwards. -@end table -@end table - -The library also provides the high-level functions: -@table @code -@item solar_elevation(latitude, longitude, t = None) -Calculates the Sun's elevation, in degreesm as apparent -from a geographical position, expressed in degrees by the parameters: -@table @code -@item latitude -The latitude in degrees northwards from the equator, -negative for southwards. -@item longitude -The longitude in degrees eastwards from Greenwich, -negative for westwards. -@end table -@noindent -The function also requires to the in Julian Centuries, -provided via the parameter @code{t}. If @code{t} is -@code{None}, the current time is used. - -@item have_sunrise_and_sunset(latitude, t = None) -Determine whether solar declination currently is -so that there can be sunrises and sunsets. If not, -you either have 24-hour daytime or 24-hour nighttime. -The function requires to the in Julian Centuries, -provided via the parameter @code{t}, and the latitude, -provided via the parameter @code{latitude}, in degrees -northwards from the equator, negative for southwards. -If @code{t} is @code{None}, the current time is used. - -This function returns a boolean. - -@item is_summer(latitude, t = None) -Determine whether it is summer on the hemisphere -ont which you are located. -The function requires to the in Julian Centuries, -provided via the parameter @code{t}, and the latitude, -provided via the parameter @code{latitude}, in degrees -northwards from the equator, negative for southwards. -If @code{t} is @code{None}, the current time is used. - -This function returns a boolean. - -@item is_winter(latitude, t = None) -Determine whether it is winter on the hemisphere -ont which you are located. -The function requires to the in Julian Centuries, -provided via the parameter @code{t}, and the latitude, -provided via the parameter @code{latitude}, in degrees -northwards from the equator, negative for southwards. -If @code{t} is @code{None}, the current time is used. - -This function returns a boolean. -@end table - - - -@node Prediction functions -@chapter Prediction functions - -Importing @code{solar_python} makes the following -solar data prediction functions available. All -parameters are of the type @code{float}, and -all functions return @code{float}. All parameters -named @code{t} is the time in Julian Centuries, -and the current time if set to @code{None}. Some -functions require the geographical position of -the observer. This latitude is provided via the -parameter @code{latitude} in degrees northwards -from the equator, negative for southwards. -This longitude is provided via the parameter -@code{longitude} in degrees eastwards from -Greenwich, negative for westwards. - -@table @code -@item solar_prediction(delta, requested, fun, epsilon = 0.000001, span = 0.01, t = None) -Predict the time point of the next or previous -time an arbitrary condition is meet. This function -returns the calculated time in Julian Centuries, -or @code{None} if the condition is not meet within -the specified timespan, specified by the parameter -@code{span} in Julian Centuries (@code{0.01} for -one year). - -The function shall find the input --- one parameter -in Julian Centuries --- for which the function-parameter -@code{fun} returns the value of @code{requested} within -an error tolerance of @code{epsilon}. - -The function uses the iteration step size @code{delta}. -If this value is negative, a past event will be determined, -and if it is positive, a future event will be predicted. - -@item future_past_equinox(delta, t = None) -Predict the time point, in Julian Centuries, of the -next or previous equinox. - -The function uses the iteration step size @code{delta}. -If this value is negative, a past event will be determined, -and if it is positive, a future event will be predicted. - -@item future_equinox(t = None) -Predict the time point, in Julian Centuries, of the -next equinox. - -@item past_equinox(t = None) -Predict the time point, in Julian Centuries, of the -previous equinox. - -@item future_past_solstice(delta, t = None) -Predict the time point, in Julian Centuries, of the -next or previous solstice. - -The function uses the iteration step size @code{delta}. -If this value is negative, a past event will be determined, -and if it is positive, a future event will be predicted. - -@item future_solstice(t = None) -Predict the time point, in Julian Centuries, of the -next solstice. - -@item past_solstice(t = None) -Predict the time point, in Julian Centuries, of the -previous solstice. - -@item future_past_elevation(delta, latitude, longitude, elevation, t = None) -Predict the time point, in Julian Centuries, of the next -or previous time the Sun reaches or reached a specific -elevation, specified in degrees via the parameter -@code{elevation}. @code{None} is returned if not found -withing a year. - -The function uses the iteration step size @code{delta}. -If this value is negative, a past event will be determined, -and if it is positive, a future event will be predicted. - -@item future_elevation(latitude, longitude, elevation, t = None) -Predict the time point, in Julian Centuries, of the next -time the Sun reaches a specific elevation, specified in -degrees via the parameter @code{elevation}. @code{None} -is returned if not found withing a year. - -@item past_elevation(latitude, longitude, elevation, t = None) -Predict the time point, in Julian Centuries, of the previous -time the Sun reached a specific elevation, specified in -degrees via the parameter @code{elevation}. @code{None} -is returned if not found withing a year. - -@item future_past_elevation_derivative(delta, latitude, longitude, derivative, t = None) -Predict the time point, in Julian Centuries, of the next or -previous time the Sun reaches or reached a specific elevation -derivative. @code{None} is returned if not found withing a -year. The sought derivative is specified via the parameter -@code{derivative}, expressed in degrees per Julian Century. - -The function uses the iteration step size @code{delta}. If -this value is negative, a past event will be determined, and -if it is positive, a future event will be predicted. - -@item future_elevation_derivative(latitude, longitude, derivative, t = None) -Predict the time point, in Julian Centuries, of the next time -the Sun reaches a specific elevation derivative. @code{None} -is returned if not found withing a year. The sought derivative -is specified via the parameter @code{derivative}, expressed in -degrees per Julian Century. - -@item past_elevation_derivative(latitude, longitude, derivative, t = None) -Predict the time point, in Julian Centuries, of the previous -time the Sun reached a specific elevation derivative. -@code{None} is returned if not found withing a year. The -sought derivative is specified via the parameter -@code{derivative}, expressed in degrees per Julian Century. - -@item sunrise_equation(latitude, longitude, t = None) -This algorithm is imprecise, gives an incorrent sunrise. -Its behaviour is not fully known. -@end table - - - -@node Miscellaneous functions -@chapter Miscellaneous functions - -Importing @code{solar_python} makes the following -functions available: -@table @code -@item radians(deg) -Convert an angle from degrees to radians. - -@item degrees(rad) -Convert an angle from radians to degrees. -@end table - - - -@node GNU Free Documentation License -@appendix GNU Free Documentation License -@include fdl.texinfo - -@bye - |