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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">QGIS is setting the default contrast stretch reasonably If I read a GeoTIFF file from a local file. Statistics are included in the image through the GDAL tags
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Tag 42112: <GDALMetadata><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <Item name="STATISTICS_MAXIMUM" sample="0">0</Item><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <Item name="STATISTICS_MEAN" sample="0">-10.126687384969</Item><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <Item name="STATISTICS_MINIMUM" sample="0">-71.313484191895</Item><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <Item name="STATISTICS_STDDEV" sample="0">9.6992444829123</Item><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <Item name="STATISTICS_VALID_PERCENT" sample="0">11.53</Item><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"></GDALMetadata><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">However, if I open the same file through http the image opens with an estimated range between -12153 and 909. Forcing QGIS to read the whole raster for finding the proper data range with the symbology settings is very
slow. Does QGIS even try to find the existing statistics when image is opened or is something going wrong with this URL:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="http://latuviitta.kapsi.fi/data/jarvi_dem/saimaa_dem.tif">http://latuviitta.kapsi.fi/data/jarvi_dem/saimaa_dem.tif</a>?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-Jukka Rahkonen-<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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