<div dir="ltr">Hi List,<div><br></div><div>I'm now trying to use GDALWarp with the C# bindings.</div><div>I'm using GDAL v2.</div><div><br></div><div>Together with a colleague we came up with this snippet:</div><div><font face="monospace, monospace">using (var ds = Gdal.Open(input, Access.GA_ReadOnly))</font></div><div><font face="monospace, monospace">{</font></div><div><font face="monospace, monospace"> if (ds == null)</font></div><div><font face="monospace, monospace"> {</font></div><div><font face="monospace, monospace"> throw new Exception("Can't open GDAL dataset: " + input);</font></div><div><font face="monospace, monospace"> }</font></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace"> var gdalOptions = new GDALWarpAppOptions(options);</font></div><div><font face="monospace, monospace"> var ptr = new[] { Dataset.getCPtr(ds).Handle };</font></div><div><font face="monospace, monospace"> var gcHandle = GCHandle.Alloc(ptr, GCHandleType.Pinned);</font></div><div><font face="monospace, monospace"> try</font></div><div><font face="monospace, monospace"> {</font></div><div><font face="monospace, monospace"> var dss = new SWIGTYPE_p_p_GDALDatasetShadow(gcHandle.AddrOfPinnedObject(), false, null);</font></div><div><font face="monospace, monospace"> var newDs = Gdal.wrapper_GDALWarpDestName(output, 1, dss, gdalOptions, null, null);</font></div><div><font face="monospace, monospace"> if (newDs == null)</font></div><div><font face="monospace, monospace"> {</font></div><div><font face="monospace, monospace"> throw new Exception("GdalWarp failed: " + Gdal.GetLastErrorMsg());</font></div><div><font face="monospace, monospace"> }</font></div><div><font face="monospace, monospace"> }</font></div><div><font face="monospace, monospace"> finally</font></div><div><font face="monospace, monospace"> {</font></div><div><font face="monospace, monospace"> if (gcHandle.IsAllocated)</font></div><div><font face="monospace, monospace"> gcHandle.Free();</font></div><div><font face="monospace, monospace"> }</font></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace"> return true;</font></div><div><font face="monospace, monospace">} </font></div><div><br></div><div>It seems to work, but the <font face="monospace, monospace">SWIGTYPE_p_p_GDALDatasetShadow</font> and <span style="font-family:monospace,monospace">gcHandle</span> feel a bit hacky.</div><div>Is this the recommended flow?</div><div>And the second parameter is object_list_count. We now put in 1, but what should this be?</div><div> <br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Thanks,<br>
<br>
Paul<br>
<br>
<div style="font-size:13.3px;font-family:verdana,arial,helvetica,sans-serif"><div style="border:1px solid rgb(229,229,229);background-color:rgb(248,248,248);padding:0.8em 0.8em 0.3em"><div style="margin:0px 0px 8px"><p style="margin:0px"><span><b><img style="float: left; margin-left: 5px; margin-right: 5px;" src="http://www.bontepaarden.nl/bontepaarden/images/newButton.png" alt="" height="120" width="160">Paul Meems </b><br><span>Release manager, configuration manager</span><br><span>and forum moderator of MapWindow GIS.</span><br><a href="http://www.mapwindow.org/" target="_blank"><span>www.mapwindow.org</span></a><br><br><span>Owner of MapWindow.nl - Support for</span><br><span>Dutch speaking users.</span><br><a href="http://www.mapwindow.nl/" target="_blank"><span>www.mapwindow.nl</span></a><br></span></p>
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