blob: 5d35e828f054bac16964a0a8ac2695645f80d0b3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
<!DOCTYPE html>
<html class="writer-html5" lang="en" >
<head>
<meta charset="utf-8" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title><no title> — PROJ 9.0.0 documentation</title>
<link rel="stylesheet" href="_static/pygments.css" type="text/css" />
<link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
<link rel="shortcut icon" href="_static/favicon.png"/>
<link rel="canonical" href="https://proj.orgabout_core.html"/>
<!--[if lt IE 9]>
<script src="_static/js/html5shiv.min.js"></script>
<![endif]-->
<script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
<script src="_static/jquery.js"></script>
<script src="_static/underscore.js"></script>
<script src="_static/doctools.js"></script>
<script src="_static/js/theme.js"></script>
<link rel="author" title="About these documents" href="about.html" />
<link rel="index" title="Index" href="genindex.html" />
<link rel="search" title="Search" href="search.html" />
</head>
<body class="wy-body-for-nav">
<div class="wy-grid-for-nav">
<nav data-toggle="wy-nav-shift" class="wy-nav-side">
<div class="wy-side-scroll">
<div class="wy-side-nav-search" style="background: #353130" >
<a href="index.html">
<img src="_static/logo.png" class="logo" alt="Logo"/>
</a>
<div class="version">
9.0.0
</div>
<div role="search">
<form id="rtd-search-form" class="wy-form" action="search.html" method="get">
<input type="text" name="q" placeholder="Search docs" />
<input type="hidden" name="check_keywords" value="yes" />
<input type="hidden" name="area" value="default" />
</form>
</div>
</div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
<ul>
<li class="toctree-l1"><a class="reference internal" href="about.html">About</a></li>
<li class="toctree-l1"><a class="reference internal" href="news.html">News</a></li>
<li class="toctree-l1"><a class="reference internal" href="download.html">Download</a></li>
<li class="toctree-l1"><a class="reference internal" href="install.html">Installation</a></li>
<li class="toctree-l1"><a class="reference internal" href="usage/index.html">Using PROJ</a></li>
<li class="toctree-l1"><a class="reference internal" href="apps/index.html">Applications</a></li>
<li class="toctree-l1"><a class="reference internal" href="operations/index.html">Coordinate operations</a></li>
<li class="toctree-l1"><a class="reference internal" href="resource_files.html">Resource files</a></li>
<li class="toctree-l1"><a class="reference internal" href="geodesic.html">Geodesic calculations</a></li>
<li class="toctree-l1"><a class="reference internal" href="development/index.html">Development</a></li>
<li class="toctree-l1"><a class="reference internal" href="specifications/index.html">Specifications</a></li>
<li class="toctree-l1"><a class="reference internal" href="community/index.html">Community</a></li>
<li class="toctree-l1"><a class="reference internal" href="faq.html">FAQ</a></li>
<li class="toctree-l1"><a class="reference internal" href="glossary.html">Glossary</a></li>
<li class="toctree-l1"><a class="reference internal" href="zreferences.html">References</a></li>
</ul>
</div>
</div>
</nav>
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"><nav class="wy-nav-top" aria-label="Mobile navigation menu" style="background: #353130" >
<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
<a href="index.html">PROJ</a>
</nav>
<div class="wy-nav-content">
<div class="rst-content">
<div role="navigation" aria-label="Page navigation">
<ul class="wy-breadcrumbs">
<li><a href="index.html" class="icon icon-home"></a> »</li>
<li><no title></li>
<li class="wy-breadcrumbs-aside">
<a href="https://github.com/OSGeo/PROJ/edit/8.2/docs/source/about_core.rst" class="fa fa-github"> Edit on GitHub</a>
</li>
</ul>
<hr/>
</div>
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
<div itemprop="articleBody">
<p>PROJ is a generic coordinate transformation software that transforms geospatial
coordinates from one coordinate reference system (CRS) to another. This
includes cartographic projections as well as geodetic transformations. PROJ
is released under the <a class="reference internal" href="about.html#license"><span class="std std-ref">X/MIT open source license</span></a></p>
<p>PROJ includes <a class="reference internal" href="apps/index.html#apps"><span class="std std-ref">command line applications</span></a> for easy conversion of
coordinates from text files or directly from user input. In addition to the
command line utilities PROJ also exposes an
<a class="reference internal" href="development/reference/index.html#reference"><span class="std std-ref">application programming interface</span></a>, or API in short. The API
lets developers use the functionality of PROJ in their own software without having
to implement similar functionality themselves.</p>
<p>PROJ started purely as a cartography application letting users convert geodetic
coordinates into projected coordinates using a number of different cartographic
projections. Over the years, as the need has become apparent, support for datum
shifts has slowly worked its way into PROJ as well. Today PROJ supports more
than a hundred different map projections and can transform coordinates between
datums using all but the most obscure geodetic techniques.</p>
</div>
</div>
<footer>
<hr/>
<div role="contentinfo">
<p>© Copyright 1983-2022.
<span class="lastupdated">Last updated on 22 Mar 2022.
</span></p>
</div>
Built with <a href="https://www.sphinx-doc.org/">Sphinx</a> using a
<a href="https://github.com/readthedocs/sphinx_rtd_theme">theme</a>
provided by <a href="https://readthedocs.org">Read the Docs</a>.
</footer>
</div>
</div>
</section>
</div>
<script>
jQuery(function () {
SphinxRtdTheme.Navigation.enable(true);
});
</script>
</body>
</html>
|
