Hy all,<br><br>The vrt format allow defining the scale and offset element. But the documentation is not clear about that :<br><ul><li><b>Offset</b>: This optional element contains the offset that should be
applied when computing "real" pixel values from scaled pixel values on a
raster band. The default is 0.0.</li><li><b>Scale</b>: This optional element contains the scale that should be
applied when computing "real" pixel values from scaled pixel values on a
raster band. The default is 1.0.</li></ul><p>What that it's mean ? If the value of offset is 1 what that it's change?</p><p>And this two elements are use in the <b>VRTRasterBand</b> element. What about <b>ScaleOffset</b> and <b>ScaleRatio</b> in the <b>ComplexSource</b> element?</p>
<p>Thank you.<br></p>