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<h1>gdalwarper.h File Reference</h1><code>#include "<a class="el" href="gdal__alg_8h_source.html">gdal_alg.h</a>"</code><br/>
<code>#include "<a class="el" href="cpl__minixml_8h_source.html">cpl_minixml.h</a>"</code><br/>
<p><a href="gdalwarper_8h_source.html">Go to the source code of this file.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Classes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classGDALWarpKernel.html">GDALWarpKernel</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classGDALWarpOperation.html">GDALWarpOperation</a></td></tr>
<tr><td colspan="2"><h2>Typedefs</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a77ab9118fe74ae912e19f4486e9c16a6"></a><!-- doxytag: member="gdalwarper.h::GDALMaskFunc" ref="a77ab9118fe74ae912e19f4486e9c16a6" args=")(void *pMaskFuncArg, int nBandCount, GDALDataType eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **papabyImageData, int bMaskIsFloat, void *pMask)" -->
typedef int(* </td><td class="memItemRight" valign="bottom"><b>GDALMaskFunc</b> )(void *pMaskFuncArg, int nBandCount, <a class="el" href="gdal_8h.html#a22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **papabyImageData, int bMaskIsFloat, void *pMask)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a68ef12d77197aa204fb95bced4b5dbfa"></a><!-- doxytag: member="gdalwarper.h::GDALWarpOperationH" ref="a68ef12d77197aa204fb95bced4b5dbfa" args="" -->
typedef void * </td><td class="memItemRight" valign="bottom"><b>GDALWarpOperationH</b></td></tr>
<tr><td colspan="2"><h2>Enumerations</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843">GDALResampleAlg</a> { <br/>
<a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843a937eaf156c5d641b52239ea1d4a675a5">GRA_NearestNeighbour</a> = 0,
<a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843afe37e3f7c4d459c31ea015e912c21660">GRA_Bilinear</a> = 1,
<a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843a526c0e254fa19de54da506d3f8bb8aaa">GRA_Cubic</a> = 2,
<a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843a20b26d42e175bf20e649fbd83ee3b72a">GRA_CubicSpline</a> = 3,
<br/>
<a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843a72882a579a46ffed02f2c255fda10465">GRA_Lanczos</a> = 4
<br/>
}</td></tr>
<tr><td colspan="2"><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a51330ba6070ac2e3ffe39a9089dafcb8"></a><!-- doxytag: member="gdalwarper.h::GDALWarpNoDataMasker" ref="a51330ba6070ac2e3ffe39a9089dafcb8" args="(void *pMaskFuncArg, int nBandCount, GDALDataType eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **papabyImageData, int bMaskIsFloat, void *pValidityMask)" -->
CPLErr </td><td class="memItemRight" valign="bottom"><b>GDALWarpNoDataMasker</b> (void *pMaskFuncArg, int nBandCount, <a class="el" href="gdal_8h.html#a22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **papabyImageData, int bMaskIsFloat, void *pValidityMask)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a17f5ba47b60c7dfe12cf22bf52c6bb96"></a><!-- doxytag: member="gdalwarper.h::GDALWarpDstAlphaMasker" ref="a17f5ba47b60c7dfe12cf22bf52c6bb96" args="(void *pMaskFuncArg, int nBandCount, GDALDataType eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **, int bMaskIsFloat, void *pValidityMask)" -->
CPLErr </td><td class="memItemRight" valign="bottom"><b>GDALWarpDstAlphaMasker</b> (void *pMaskFuncArg, int nBandCount, <a class="el" href="gdal_8h.html#a22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **, int bMaskIsFloat, void *pValidityMask)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aeba78aa95037340156b37246563db4f8"></a><!-- doxytag: member="gdalwarper.h::GDALWarpSrcAlphaMasker" ref="aeba78aa95037340156b37246563db4f8" args="(void *pMaskFuncArg, int nBandCount, GDALDataType eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **, int bMaskIsFloat, void *pValidityMask)" -->
CPLErr </td><td class="memItemRight" valign="bottom"><b>GDALWarpSrcAlphaMasker</b> (void *pMaskFuncArg, int nBandCount, <a class="el" href="gdal_8h.html#a22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **, int bMaskIsFloat, void *pValidityMask)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aff8c925a7286a1b890a09f0345736bee"></a><!-- doxytag: member="gdalwarper.h::GDALWarpCutlineMasker" ref="aff8c925a7286a1b890a09f0345736bee" args="(void *pMaskFuncArg, int nBandCount, GDALDataType eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **, int bMaskIsFloat, void *pValidityMask)" -->
CPLErr </td><td class="memItemRight" valign="bottom"><b>GDALWarpCutlineMasker</b> (void *pMaskFuncArg, int nBandCount, <a class="el" href="gdal_8h.html#a22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> eType, int nXOff, int nYOff, int nXSize, int nYSize, GByte **, int bMaskIsFloat, void *pValidityMask)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae069a75e4ced6e9abab61f7e94d09440"></a><!-- doxytag: member="gdalwarper.h::GDALCreateWarpOptions" ref="ae069a75e4ced6e9abab61f7e94d09440" args="(void)" -->
<a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> * </td><td class="memItemRight" valign="bottom"><b>GDALCreateWarpOptions</b> (void)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6267be57edda05a9206d519e1a20897c"></a><!-- doxytag: member="gdalwarper.h::GDALDestroyWarpOptions" ref="a6267be57edda05a9206d519e1a20897c" args="(GDALWarpOptions *)" -->
void </td><td class="memItemRight" valign="bottom"><b>GDALDestroyWarpOptions</b> (<a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> *)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a94279811769f468433c49532f1002579"></a><!-- doxytag: member="gdalwarper.h::GDALCloneWarpOptions" ref="a94279811769f468433c49532f1002579" args="(const GDALWarpOptions *)" -->
<a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> * </td><td class="memItemRight" valign="bottom"><b>GDALCloneWarpOptions</b> (const <a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> *)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="adc1364720d5f3bfa822cce782a2de811"></a><!-- doxytag: member="gdalwarper.h::GDALSerializeWarpOptions" ref="adc1364720d5f3bfa822cce782a2de811" args="(const GDALWarpOptions *)" -->
<a class="el" href="structCPLXMLNode.html">CPLXMLNode</a> * </td><td class="memItemRight" valign="bottom"><b>GDALSerializeWarpOptions</b> (const <a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> *)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a620fb036f14569dbf49ceb1b25bb50dc"></a><!-- doxytag: member="gdalwarper.h::GDALDeserializeWarpOptions" ref="a620fb036f14569dbf49ceb1b25bb50dc" args="(CPLXMLNode *)" -->
<a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> * </td><td class="memItemRight" valign="bottom"><b>GDALDeserializeWarpOptions</b> (<a class="el" href="structCPLXMLNode.html">CPLXMLNode</a> *)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">CPLErr </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#ad36462e8d5d34642df7f9ea1cfc2fec4">GDALReprojectImage</a> (GDALDatasetH hSrcDS, const char *pszSrcWKT, GDALDatasetH hDstDS, const char *pszDstWKT, <a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843">GDALResampleAlg</a> eResampleAlg, double dfWarpMemoryLimit, double dfMaxError, GDALProgressFunc pfnProgress, void *pProgressArg, <a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> *psOptions)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a71855a3db3fc77d37384c274333fee3d"></a><!-- doxytag: member="gdalwarper.h::GDALCreateAndReprojectImage" ref="a71855a3db3fc77d37384c274333fee3d" args="(GDALDatasetH hSrcDS, const char *pszSrcWKT, const char *pszDstFilename, const char *pszDstWKT, GDALDriverH hDstDriver, char **papszCreateOptions, GDALResampleAlg eResampleAlg, double dfWarpMemoryLimit, double dfMaxError, GDALProgressFunc pfnProgress, void *pProgressArg, GDALWarpOptions *psOptions)" -->
CPLErr </td><td class="memItemRight" valign="bottom"><b>GDALCreateAndReprojectImage</b> (GDALDatasetH hSrcDS, const char *pszSrcWKT, const char *pszDstFilename, const char *pszDstWKT, GDALDriverH hDstDriver, char **papszCreateOptions, <a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843">GDALResampleAlg</a> eResampleAlg, double dfWarpMemoryLimit, double dfMaxError, GDALProgressFunc pfnProgress, void *pProgressArg, <a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> *psOptions)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GDALDatasetH </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#ab5a8723d68786e7554f1ad4c0a6fa8d3">GDALAutoCreateWarpedVRT</a> (GDALDatasetH hSrcDS, const char *pszSrcWKT, const char *pszDstWKT, <a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843">GDALResampleAlg</a> eResampleAlg, double dfMaxError, const <a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> *psOptions)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GDALDatasetH </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#a4ad252bc084421b47428973a55316421">GDALCreateWarpedVRT</a> (GDALDatasetH hSrcDS, int nPixels, int nLines, double *padfGeoTransform, <a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> *psOptions)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">CPLErr </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#ac34ad2a7e8cd3c983998f4c6a57e3dd0">GDALInitializeWarpedVRT</a> (GDALDatasetH hDS, <a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> *psWO)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GDALWarpOperationH </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#a1ac4d69c20f1271218a4d94518abc41a">GDALCreateWarpOperation</a> (const <a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> *)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#a18699ff234cc3a4def48ebd9e1b77be8">GDALDestroyWarpOperation</a> (GDALWarpOperationH)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">CPLErr </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#a993e615a980058f28c02a202bd4b96a2">GDALChunkAndWarpImage</a> (GDALWarpOperationH, int, int, int, int)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">CPLErr </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#ad7b7988437b322405da2ac368c0bd5b1">GDALChunkAndWarpMulti</a> (GDALWarpOperationH, int, int, int, int)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">CPLErr </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#a0a34228245a0204253b1123f0cafa304">GDALWarpRegion</a> (GDALWarpOperationH, int, int, int, int, int, int, int, int)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">CPLErr </td><td class="memItemRight" valign="bottom"><a class="el" href="gdalwarper_8h.html#a6b47954494dca86760285e283abc81c8">GDALWarpRegionToBuffer</a> (GDALWarpOperationH, int, int, int, int, void *, <a class="el" href="gdal_8h.html#a22e22ce0a55036a96f652765793fb7a4">GDALDataType</a>, int, int, int, int)</td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>GDAL warper related entry points and definitions. Eventually it is expected that this file will be mostly private to the implementation, and the public C entry points will be available in <a class="el" href="gdal__alg_8h.html">gdal_alg.h</a>. </p>
<hr/><h2>Enumeration Type Documentation</h2>
<a class="anchor" id="a4775b029869df1f9270ad554c0633843"></a><!-- doxytag: member="gdalwarper.h::GDALResampleAlg" ref="a4775b029869df1f9270ad554c0633843" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843">GDALResampleAlg</a></td>
</tr>
</table>
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<div class="memdoc">
<p>Warp Resampling Algorithm </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="a4775b029869df1f9270ad554c0633843a937eaf156c5d641b52239ea1d4a675a5"></a><!-- doxytag: member="GRA_NearestNeighbour" ref="a4775b029869df1f9270ad554c0633843a937eaf156c5d641b52239ea1d4a675a5" args="" -->GRA_NearestNeighbour</em> </td><td>
<p>Nearest neighbour (select on one input pixel) </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a4775b029869df1f9270ad554c0633843afe37e3f7c4d459c31ea015e912c21660"></a><!-- doxytag: member="GRA_Bilinear" ref="a4775b029869df1f9270ad554c0633843afe37e3f7c4d459c31ea015e912c21660" args="" -->GRA_Bilinear</em> </td><td>
<p>Bilinear (2x2 kernel) </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a4775b029869df1f9270ad554c0633843a526c0e254fa19de54da506d3f8bb8aaa"></a><!-- doxytag: member="GRA_Cubic" ref="a4775b029869df1f9270ad554c0633843a526c0e254fa19de54da506d3f8bb8aaa" args="" -->GRA_Cubic</em> </td><td>
<p>Cubic Convolution Approximation (4x4 kernel) </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a4775b029869df1f9270ad554c0633843a20b26d42e175bf20e649fbd83ee3b72a"></a><!-- doxytag: member="GRA_CubicSpline" ref="a4775b029869df1f9270ad554c0633843a20b26d42e175bf20e649fbd83ee3b72a" args="" -->GRA_CubicSpline</em> </td><td>
<p>Cubic B-Spline Approximation (4x4 kernel) </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a4775b029869df1f9270ad554c0633843a72882a579a46ffed02f2c255fda10465"></a><!-- doxytag: member="GRA_Lanczos" ref="a4775b029869df1f9270ad554c0633843a72882a579a46ffed02f2c255fda10465" args="" -->GRA_Lanczos</em> </td><td>
<p>Lanczos windowed sinc interpolation (6x6 kernel) </p>
</td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="ab5a8723d68786e7554f1ad4c0a6fa8d3"></a><!-- doxytag: member="gdalwarper.h::GDALAutoCreateWarpedVRT" ref="ab5a8723d68786e7554f1ad4c0a6fa8d3" args="(GDALDatasetH hSrcDS, const char *pszSrcWKT, const char *pszDstWKT, GDALResampleAlg eResampleAlg, double dfMaxError, const GDALWarpOptions *psOptions)" -->
<div class="memitem">
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<td class="memname">GDALDatasetH GDALAutoCreateWarpedVRT </td>
<td>(</td>
<td class="paramtype">GDALDatasetH </td>
<td class="paramname"> <em>hSrcDS</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>pszSrcWKT</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>pszDstWKT</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="gdalwarper_8h.html#a4775b029869df1f9270ad554c0633843">GDALResampleAlg</a> </td>
<td class="paramname"> <em>eResampleAlg</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"> <em>dfMaxError</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="structGDALWarpOptions.html">GDALWarpOptions</a> * </td>
<td class="paramname"> <em>psOptionsIn</em></td><td> </td>
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<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<div class="memdoc">
<p>Create virtual warped dataset automatically.</p>
<p>This function will create a warped virtual file representing the input image warped into the target coordinate system. A GenImgProj transformation is created to accomplish any required GCP/Geotransform warp and reprojection to the target coordinate system. The output virtual dataset will be "northup" in the target coordinate system. The <a class="el" href="gdal__alg_8h.html#a816819e7495bfce06dbd110f7c57af65">GDALSuggestedWarpOutput()</a> function is used to determine the bounds and resolution of the output virtual file which should be large enough to include all the input image</p>
<p>Note that the constructed GDALDatasetH will acquire one or more references to the passed in hSrcDS. Reference counting semantics on the source dataset should be honoured. That is, don't just <a class="el" href="gdal_8h.html#a0984222d45a72028fcbbf1f44831ffbc">GDALClose()</a> it unless it was opened with <a class="el" href="gdal_8h.html#a347b1025e090c5238196b658463addd3">GDALOpenShared()</a>.</p>
<p>The returned dataset will have no associated filename for itself. If you want to write the virtual dataset description to a file, use the <a class="el" href="gdal_8h.html#a19c2fc1f303eec4df98fc2d9c5acd9cb">GDALSetDescription()</a> function (or SetDescription() method) on the dataset to assign a filename before it is closed.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hSrcDS</em> </td><td>The source dataset.</td></tr>
<tr><td valign="top"></td><td valign="top"><em>pszSrcWKT</em> </td><td>The coordinate system of the source image. If NULL, it will be read from the source image.</td></tr>
<tr><td valign="top"></td><td valign="top"><em>pszDstWKT</em> </td><td>The coordinate system to convert to. If NULL no change of coordinate system will take place.</td></tr>
<tr><td valign="top"></td><td valign="top"><em>eResampleAlg</em> </td><td>One of GRA_NearestNeighbour, GRA_Bilinear, GRA_Cubic or GRA_CubicSpline. Controls the sampling method used.</td></tr>
<tr><td valign="top"></td><td valign="top"><em>dfMaxError</em> </td><td>Maximum error measured in input pixels that is allowed in approximating the transformation (0.0 for exact calculations).</td></tr>
<tr><td valign="top"></td><td valign="top"><em>psOptions</em> </td><td>Additional warp options, normally NULL.</td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>NULL on failure, or a new virtual dataset handle on success. </dd></dl>
<p>References <a class="el" href="gdalwarper_8h_source.html#l00099">GDALWarpOptions::eResampleAlg</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l01725">GDALApproxTransform()</a>, <a class="el" href="vrtwarped_8cpp_source.html#l00083">GDALAutoCreateWarpedVRT()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l01653">GDALCreateApproxTransformer()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l00499">GDALCreateGenImgProjTransformer()</a>, <a class="el" href="vrtwarped_8cpp_source.html#l00216">GDALCreateWarpedVRT()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l00861">GDALGenImgProjTransform()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l01120">GDALGetGCPCount()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l01156">GDALGetGCPProjection()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l00721">GDALGetProjectionRef()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l00677">GDALGetRasterCount()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l00792">GDALSetGenImgProjTransformerDstGeoTransform()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l00765">GDALSetProjection()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l00146">GDALSuggestedWarpOutput()</a>, <a class="el" href="gdalwarper_8h_source.html#l00106">GDALWarpOptions::hSrcDS</a>, <a class="el" href="gdalwarper_8h_source.html#l00112">GDALWarpOptions::nBandCount</a>, <a class="el" href="gdalwarper_8h_source.html#l00118">GDALWarpOptions::panDstBands</a>, <a class="el" href="gdalwarper_8h_source.html#l00115">GDALWarpOptions::panSrcBands</a>, <a class="el" href="gdalwarper_8h_source.html#l00146">GDALWarpOptions::pfnTransformer</a>, and <a class="el" href="gdalwarper_8h_source.html#l00149">GDALWarpOptions::pTransformerArg</a>.</p>
<p>Referenced by <a class="el" href="vrtwarped_8cpp_source.html#l00083">GDALAutoCreateWarpedVRT()</a>.</p>
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<a class="anchor" id="a993e615a980058f28c02a202bd4b96a2"></a><!-- doxytag: member="gdalwarper.h::GDALChunkAndWarpImage" ref="a993e615a980058f28c02a202bd4b96a2" args="(GDALWarpOperationH, int, int, int, int)" -->
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<td class="memname">CPLErr GDALChunkAndWarpImage </td>
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<td class="paramtype">int </td>
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<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classGDALWarpOperation.html#a589a9b74fa370cc9eaf11bdfd9aab2ae">GDALWarpOperation::ChunkAndWarpImage()</a> </dd></dl>
<p>References <a class="el" href="gdalwarpoperation_8cpp_source.html#l00681">GDALChunkAndWarpImage()</a>.</p>
<p>Referenced by <a class="el" href="gdalwarpoperation_8cpp_source.html#l00681">GDALChunkAndWarpImage()</a>.</p>
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<a class="anchor" id="ad7b7988437b322405da2ac368c0bd5b1"></a><!-- doxytag: member="gdalwarper.h::GDALChunkAndWarpMulti" ref="ad7b7988437b322405da2ac368c0bd5b1" args="(GDALWarpOperationH, int, int, int, int)" -->
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<td class="memname">CPLErr GDALChunkAndWarpMulti </td>
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<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classGDALWarpOperation.html#aa4fcccc201832f6f692fd290848cf4f1">GDALWarpOperation::ChunkAndWarpMulti()</a> </dd></dl>
<p>References <a class="el" href="gdalwarpoperation_8cpp_source.html#l00866">GDALChunkAndWarpMulti()</a>.</p>
<p>Referenced by <a class="el" href="gdalwarpoperation_8cpp_source.html#l00866">GDALChunkAndWarpMulti()</a>.</p>
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<a class="anchor" id="a4ad252bc084421b47428973a55316421"></a><!-- doxytag: member="gdalwarper.h::GDALCreateWarpedVRT" ref="a4ad252bc084421b47428973a55316421" args="(GDALDatasetH hSrcDS, int nPixels, int nLines, double *padfGeoTransform, GDALWarpOptions *psOptions)" -->
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<p>Create virtual warped dataset.</p>
<p>This function will create a warped virtual file representing the input image warped based on a provided transformation. Output bounds and resolution are provided explicitly.</p>
<p>Note that the constructed GDALDatasetH will acquire one or more references to the passed in hSrcDS. Reference counting semantics on the source dataset should be honoured. That is, don't just <a class="el" href="gdal_8h.html#a0984222d45a72028fcbbf1f44831ffbc">GDALClose()</a> it unless it was opened with <a class="el" href="gdal_8h.html#a347b1025e090c5238196b658463addd3">GDALOpenShared()</a>.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hSrcDS</em> </td><td>The source dataset.</td></tr>
<tr><td valign="top"></td><td valign="top"><em>nOverviewLevels</em> </td><td>The number of "power of 2" overview levels to be built. If zero, no overview levels will be managed.</td></tr>
<tr><td valign="top"></td><td valign="top"><em>psOptions</em> </td><td>Additional warp options, normally NULL.</td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd>NULL on failure, or a new virtual dataset handle on success. </dd></dl>
<p>References <a class="el" href="vrtwarped_8cpp_source.html#l00946">VRTWarpedDataset::AddBand()</a>, <a class="el" href="vrtwarped_8cpp_source.html#l00216">GDALCreateWarpedVRT()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l00643">GDALGetRasterBand()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l00617">GDALDataset::GetRasterBand()</a>, <a class="el" href="gdalrasterband_8cpp_source.html#l00547">GDALRasterBand::GetRasterDataType()</a>, <a class="el" href="gdalwarper_8h_source.html#l00109">GDALWarpOptions::hDstDS</a>, <a class="el" href="gdalwarper_8h_source.html#l00112">GDALWarpOptions::nBandCount</a>, and <a class="el" href="vrtdataset_8cpp_source.html#l00540">VRTDataset::SetGeoTransform()</a>.</p>
<p>Referenced by <a class="el" href="vrtwarped_8cpp_source.html#l00083">GDALAutoCreateWarpedVRT()</a>, and <a class="el" href="vrtwarped_8cpp_source.html#l00216">GDALCreateWarpedVRT()</a>.</p>
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<a class="anchor" id="a1ac4d69c20f1271218a4d94518abc41a"></a><!-- doxytag: member="gdalwarper.h::GDALCreateWarpOperation" ref="a1ac4d69c20f1271218a4d94518abc41a" args="(const GDALWarpOptions *)" -->
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<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classGDALWarpOperation.html#a52447611e7e196187a4667842f628d3b">GDALWarpOperation::Initialize()</a> </dd></dl>
<p>References <a class="el" href="gdalwarpoperation_8cpp_source.html#l00560">GDALCreateWarpOperation()</a>, and <a class="el" href="gdalwarpoperation_8cpp_source.html#l00388">GDALWarpOperation::Initialize()</a>.</p>
<p>Referenced by <a class="el" href="gdalwarpoperation_8cpp_source.html#l00560">GDALCreateWarpOperation()</a>.</p>
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<a class="anchor" id="a18699ff234cc3a4def48ebd9e1b77be8"></a><!-- doxytag: member="gdalwarper.h::GDALDestroyWarpOperation" ref="a18699ff234cc3a4def48ebd9e1b77be8" args="(GDALWarpOperationH)" -->
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<td class="memname">void GDALDestroyWarpOperation </td>
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<dl class="see"><dt><b>See also:</b></dt><dd>GDALWarpOperation::~GDALWarpOperation() </dd></dl>
<p>References <a class="el" href="gdalwarpoperation_8cpp_source.html#l00583">GDALDestroyWarpOperation()</a>.</p>
<p>Referenced by <a class="el" href="gdalwarpoperation_8cpp_source.html#l00583">GDALDestroyWarpOperation()</a>.</p>
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<a class="anchor" id="ac34ad2a7e8cd3c983998f4c6a57e3dd0"></a><!-- doxytag: member="gdalwarper.h::GDALInitializeWarpedVRT" ref="ac34ad2a7e8cd3c983998f4c6a57e3dd0" args="(GDALDatasetH hDS, GDALWarpOptions *psWO)" -->
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<p>Set warp info on virtual warped dataset.</p>
<p>Initializes all the warping information for a virtual warped dataset.</p>
<p>This method is the same as the C++ method VRTWarpedDataset::Initialize().</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hDS</em> </td><td>dataset previously created with the VRT driver, and a SUBCLASS of "VRTWarpedDataset".</td></tr>
<tr><td valign="top"></td><td valign="top"><em>psWO</em> </td><td>the warp options to apply. Note that ownership of the transformation information is taken over by the function though everything else remains the property of the caller.</td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd>CE_None on success or CE_Failure if an error occurs. </dd></dl>
<p>References <a class="el" href="vrtwarped_8cpp_source.html#l00564">GDALInitializeWarpedVRT()</a>.</p>
<p>Referenced by <a class="el" href="vrtwarped_8cpp_source.html#l00564">GDALInitializeWarpedVRT()</a>.</p>
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<a class="anchor" id="ad36462e8d5d34642df7f9ea1cfc2fec4"></a><!-- doxytag: member="gdalwarper.h::GDALReprojectImage" ref="ad36462e8d5d34642df7f9ea1cfc2fec4" args="(GDALDatasetH hSrcDS, const char *pszSrcWKT, GDALDatasetH hDstDS, const char *pszDstWKT, GDALResampleAlg eResampleAlg, double dfWarpMemoryLimit, double dfMaxError, GDALProgressFunc pfnProgress, void *pProgressArg, GDALWarpOptions *psOptions)" -->
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<p>Reproject image.</p>
<p>This is a convenience function utilizing the <a class="el" href="classGDALWarpOperation.html">GDALWarpOperation</a> class to reproject an image from a source to a destination. In particular, this function takes care of establishing the transformation function to implement the reprojection, and will default a variety of other warp options.</p>
<p>By default all bands are transferred, with no masking or nodata values in effect. No metadata, projection info, or color tables are transferred to the output file.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hSrcDS</em> </td><td>the source image file. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>pszSrcWKT</em> </td><td>the source projection. If NULL the source projection is read from from hSrcDS. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>hDstDS</em> </td><td>the destination image file. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>pszDstWKT</em> </td><td>the destination projection. If NULL the destination projection will be read from hDstDS. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>eResampleAlg</em> </td><td>the type of resampling to use. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>dfWarpMemoryLimit</em> </td><td>the amount of memory (in bytes) that the warp API is allowed to use for caching. This is in addition to the memory already allocated to the GDAL caching (as per <a class="el" href="gdal_8h.html#adfb1e95703ee577f012935869852d96c">GDALSetCacheMax()</a>). May be 0.0 to use default memory settings. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>dfMaxError</em> </td><td>maximum error measured in input pixels that is allowed in approximating the transformation (0.0 for exact calculations). </td></tr>
<tr><td valign="top"></td><td valign="top"><em>pfnProgress</em> </td><td>a GDALProgressFunc() compatible callback function for reporting progress or NULL. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>pProgressArg</em> </td><td>argument to be passed to pfnProgress. May be NULL. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>psOptions</em> </td><td>warp options, normally NULL.</td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd>CE_None on success or CE_Failure if something goes wrong. </dd></dl>
<p>References <a class="el" href="gdalwarpoperation_8cpp_source.html#l00616">GDALWarpOperation::ChunkAndWarpImage()</a>, <a class="el" href="gdalwarper_8h_source.html#l00099">GDALWarpOptions::eResampleAlg</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l01725">GDALApproxTransform()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l01653">GDALCreateApproxTransformer()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l00499">GDALCreateGenImgProjTransformer()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l01699">GDALDestroyApproxTransformer()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l00819">GDALDestroyGenImgProjTransformer()</a>, <a class="el" href="gdaltransformer_8cpp_source.html#l00861">GDALGenImgProjTransform()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l00643">GDALGetRasterBand()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l00677">GDALGetRasterCount()</a>, <a class="el" href="gdalrasterband_8cpp_source.html#l01534">GDALGetRasterNoDataValue()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l00555">GDALGetRasterXSize()</a>, <a class="el" href="gdaldataset_8cpp_source.html#l00592">GDALGetRasterYSize()</a>, <a class="el" href="gdalwarper_8h_source.html#l00109">GDALWarpOptions::hDstDS</a>, <a class="el" href="gdalwarper_8h_source.html#l00106">GDALWarpOptions::hSrcDS</a>, <a class="el" href="gdalwarpoperation_8cpp_source.html#l00388">GDALWarpOperation::Initialize()</a>, <a class="el" href="gdalwarper_8h_source.html#l00112">GDALWarpOptions::nBandCount</a>, <a class="el" href="gdalwarper_8h_source.html#l00130">GDALWarpOptions::padfSrcNoDataImag</a>, <a class="el" href="gdalwarper_8h_source.html#l00127">GDALWarpOptions::padfSrcNoDataReal</a>, <a class="el" href="gdalwarper_8h_source.html#l00118">GDALWarpOptions::panDstBands</a>, <a class="el" href="gdalwarper_8h_source.html#l00115">GDALWarpOptions::panSrcBands</a>, <a class="el" href="gdalwarper_8h_source.html#l00140">GDALWarpOptions::pfnProgress</a>, <a class="el" href="gdalwarper_8h_source.html#l00146">GDALWarpOptions::pfnTransformer</a>, <a class="el" href="gdalwarper_8h_source.html#l00143">GDALWarpOptions::pProgressArg</a>, and <a class="el" href="gdalwarper_8h_source.html#l00149">GDALWarpOptions::pTransformerArg</a>.</p>
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<td class="memname">CPLErr GDALWarpRegion </td>
<td>(</td>
<td class="paramtype">GDALWarpOperationH </td>
<td class="paramname"> <em>hOperation</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nDstXOff</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nDstYOff</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nDstXSize</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nDstYSize</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nSrcXOff</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nSrcYOff</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nSrcXSize</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nSrcYSize</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classGDALWarpOperation.html#af853337e2a939f913ae4de48dc2f577a">GDALWarpOperation::WarpRegion()</a> </dd></dl>
<p>References <a class="el" href="gdalwarpoperation_8cpp_source.html#l01224">GDALWarpRegion()</a>.</p>
<p>Referenced by <a class="el" href="gdalwarpoperation_8cpp_source.html#l01224">GDALWarpRegion()</a>.</p>
</div>
</div>
<a class="anchor" id="a6b47954494dca86760285e283abc81c8"></a><!-- doxytag: member="gdalwarper.h::GDALWarpRegionToBuffer" ref="a6b47954494dca86760285e283abc81c8" args="(GDALWarpOperationH, int, int, int, int, void *, GDALDataType, int, int, int, int)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">CPLErr GDALWarpRegionToBuffer </td>
<td>(</td>
<td class="paramtype">GDALWarpOperationH </td>
<td class="paramname"> <em>hOperation</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nDstXOff</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nDstYOff</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nDstXSize</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nDstYSize</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"> <em>pDataBuf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="gdal_8h.html#a22e22ce0a55036a96f652765793fb7a4">GDALDataType</a> </td>
<td class="paramname"> <em>eBufDataType</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nSrcXOff</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nSrcYOff</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nSrcXSize</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nSrcYSize</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classGDALWarpOperation.html#a8051cf86afc6a24e21663944424a0f45">GDALWarpOperation::WarpRegionToBuffer()</a> </dd></dl>
<p>References <a class="el" href="gdalwarpoperation_8cpp_source.html#l01645">GDALWarpRegionToBuffer()</a>.</p>
<p>Referenced by <a class="el" href="gdalwarpoperation_8cpp_source.html#l01645">GDALWarpRegionToBuffer()</a>.</p>
</div>
</div>
</div>
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