mirror of https://github.com/ecmwf/eccodes.git
81 lines
3.3 KiB
HTML
81 lines
3.3 KiB
HTML
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<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
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<title>grib_api: grib_get</title>
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<!-- Generated by Doxygen 1.5.3 -->
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<ul>
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<li><a href="index.html"><span>Main Page</span></a></li>
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<li><a href="modules.html"><span>Modules</span></a></li>
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<li><a href="files.html"><span>Files</span></a></li>
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<li><a href="pages.html"><span>Related Pages</span></a></li>
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<li><a href="examples.html"><span>Examples</span></a></li>
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</ul>
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<h1><a class="anchor" name="grib_get">grib_get</a></h1><h2><a class="anchor" name="DESCRIPTION">
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DESCRIPTION</a></h2>
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Get values of some keys from a grib file. It is similar to grib_ls, but fails returning an error code when an error occurs (e.g. key not found).<h2><a class="anchor" name="USAGE">
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USAGE</a></h2>
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grib_get [options] grib_file grib_file ...<h2><a class="anchor" name="OPTIONS">
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OPTIONS</a></h2>
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-f <br>
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Force. Force the execution not to fail on error. <br>
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<br>
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-p key[:{s/d/l}],key[:{s/d/l}],... <br>
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Declaration of keys to print. For each key a string (key:s) or a double (key:d) or a long (key:l) type can be requested. Default type is string. <br>
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<br>
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-F format <br>
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C style format for floating point values. <br>
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<br>
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-l Latitude,Longitude[,MODE,file] <br>
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Value close to the point of a Latitude/Longitude. Allowed values for MODE are: 4 (4 values in the nearest points are printed) Default 1 (the value at the nearest point is printed) file (file is used as mask. The closer point with mask value>=0.5 is printed) <br>
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<br>
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-P key[:{s/d/l}],key[:{s/d/l}],... <br>
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As -p adding the declared keys to the default list. <br>
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<br>
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-w key[:{s/d/l}]{=/!=}value,key[:{s/d/l}]{=/!=}value,... <br>
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Where clause. Grib messages are processed only if they match all the key/value constraints. A valid constraint is of type key=value or key!=value. For each key a string (key:s) or a double (key:d) or a long (key:l) type can be specified. Default type is string. <br>
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<br>
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-n namespace <br>
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All the keys belonging to namespace are printed. <br>
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<br>
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-V <br>
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Version. <br>
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<br>
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-W width <br>
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Minimum width of each column in output. Default is 10. <br>
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<br>
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-m <br>
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Mars keys are printed. <br>
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<br>
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-M <br>
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Multi-grib support off. Turn off support for multiple fields in single grib message <br>
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<br>
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-g <br>
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Copy GTS header. <br>
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<br>
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-G <br>
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GRIBEX compatibility mode. <br>
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<br>
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-7 <br>
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Does not fail when the message has wrong length <br>
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<br>
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<h2><a class="anchor" name="grib_get_examples">
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grib_get examples</a></h2>
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<ol type=1>
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<li>grib_get fails if a key is not found.<br>
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<div class="fragment"><pre class="fragment">
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>grib_get -p gribname ../data/tigge_pf_ecmwf.grib2
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</pre></div></li><li>To get the step of the first GRIB message in a file: <br>
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<div class="fragment"><pre class="fragment">
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>grib_get -w count=1 -p step ../data/tigge_pf_ecmwf.grib2
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</pre></div> </li></ol>
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<hr size="1"><address style="text-align: right;"><small>Generated on Tue Sep 22 15:18:22 2009 for grib_api by
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<a href="http://www.doxygen.org/index.html">
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address>
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