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
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.5"/>
<title>eccodes: ecCodes</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
$(document).ready(function() { searchBox.OnSelectItem(0); });
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">eccodes
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.5 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li class="current"><a href="index.html"><span>Main Page</span></a></li>
<li><a href="modules.html"><span>C Interface</span></a></li>
<li><a href="classeccodes.html"><span>F90 Interface</span></a></li>
<li><a href="namespaces.html"><span>Python Interface</span></a></li>
<li>
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</li>
</ul>
</div>
</div><!-- top -->
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Pages</a></div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div class="header">
<div class="headertitle">
<div class="title"><a class="el" href="namespaceec_codes.html" title="This package is the Python interface to ecCodes. ">ecCodes</a> </div> </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><h1><a class="anchor" id="overview"></a>
Overview</h1>
<p><b>ecCodes</b> is a package developed by ECMWF which provides an application programming interface and a set of tools for decoding and encoding messages in the following formats:</p>
<ul>
<li>WMO FM-92 GRIB edition 1 and edition 2</li>
<li>WMO FM-94 BUFR edition 3 and edition 4</li>
<li>WMO GTS abbreviated header (only decoding).</li>
</ul>
<p>A useful set of <a href="https://confluence.ecmwf.int/display/ECC/Command+line+tools">command line tools</a> provide quick access to the messages. C, Fortran 90 and Python interfaces provide access to the main ecCodes functionality.</p>
<p>ecCodes is an evolution of GRIB-API. It is designed to provide the user with a simple set of functions to access data from several formats with a key/value approach.</p>
<p>For GRIB encoding and decoding, the GRIB-API functionality is provided fully in ecCodes with the same user interface and behaviour. Interfaces for C, Fortran 90 and Python are all maintained as in GRIB-API. However, the GRIB-API Fortran 77 interface is no longer available.</p>
<p>In addition, a new set of functions with the prefix "codes_" is provided to operate on all the supported message formats. These functions have the same interface and behaviour as the "grib_" functions.</p>
<p>A selection of GRIB-API tools has been included in ecCodes (<a href="https://confluence.ecmwf.int/display/ECC/GRIB+tools">ecCodes GRIB tools</a>), while new tools are available for the BUFR (<a href="https://confluence.ecmwf.int/display/ECC/BUFR+tools">ecCodes BUFR tools</a>) and GTS formats. The new tools have been developed to be as similar as possible to the existing GRIB-API tools maintaining, where possible, the same options and behaviour. A significant difference compared with GRIB-API tools is that bufr_dump produces output in <a href="https://en.wikipedia.org/wiki/JSON">JSON</a> format which can be used in many web based applications.</p>
<p>Migration from GRIB-API to ecCodes is expected to be transparent for current GRIB-API users. The GRIB-API library is fully available in the ecCodes library. Users are encouraged to test their GRIB-API applications by linking with the ecCodes library and to provide feedback of any problems encountered. For further details see <a href="https://confluence.ecmwf.int/display/ECC/GRIB-API+migration">here</a>.</p>
<dl class="section warning"><dt>Warning</dt><dd>Name clashes prevent a simultaneous use of the GRIB-API and ecCodes libraries. For this reason, and to simplify the software maintenance, it is planned to replace GRIB-API by ecCodes.<br/>
The functions with the "grib_" prefix will, however, be maintained in ecCodes.</dd></dl>
<h6></h6>
<p>Reference manuals are also provided for the C library (organized in <a class="el" href="modules.html">C interface</a>), for the <a class="el" href="classeccodes.html">Fortran 90 interface</a> and for the <a class="el" href="namespaceec_codes.html">Python interface</a>.</p>
<p><a href="https://confluence.ecmwf.int/display/ECC/ecCodes+installation">Installation instructions</a> are also provided. </p>
</div></div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.5
</small></address>
</body>
</html>
|
