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<!-- #BeginEditable "content" ****** -->
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<h2><a name="KSEC3">GRIB section 3, the bitmap section</a></h2>
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<p>An INTEGER array of at least 2 elements. </p>
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<p> </p>
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<table border="3">
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<caption><strong> Contents of KSEC3 </strong></caption><tbody>
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<tr>
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<th> Element </th>
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<th> Contents </th>
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<th style="vertical-align: middle;">
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GRIB API keys<br>
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</th>
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<tr>
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<td> 1 </td>
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<td>
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<pre>0 A bitmap is included in the GRIB message.<br> The data array PSEC4 contains a value which serves as a<br> missing data indicator for use at missing data points.<br><br>Non-zero The number of a predefined bitmap.<br> The bitmap is not included in the message. The binary<br> data array contains only valid data values; missing<br> points are suppressed.</pre></td>
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<th style="vertical-align: top;"><div align="left">bitmapPresent<br>
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</div></th>
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<tr>
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<td> 2
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<p> </p>
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</td>
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<td> The value used at missing data points in an INTEGER
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data field. This value must be supplied for both encoding and decoding.
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</td>
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<th style="vertical-align: top;"><div align="left">missingValue<br>
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</div></th>
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