[Qgis-user] [pyQGIS] legend of QgsSingleBandPseudoColorRenderer

[andrea antonello]

Hello again,
I styled a raster using a colorramp like:

crsh = QgsColorRampShader()
crsh.setColorRampType(QgsColorRampShader.Interpolated)
lst = [
QgsColorRampShader.ColorRampItem(minV, QColor(255,0,0)),
QgsColorRampShader.ColorRampItem(minV + (maxV-minV)/2, QColor(0,255,0)),
QgsColorRampShader.ColorRampItem(maxV, QColor(0,0,255))
]
crsh.setColorRampItemList(lst)
shader = QgsRasterShader()
shader.setRasterShaderFunction(crsh)

renderer = QgsSingleBandPseudoColorRenderer(dtmLayer.dataProvider(), 1,
shader)
dtmLayer.setRenderer(renderer)


The raster shows up properly styled, but the legend is not handled
properly. Even if the minV and maxV are values between 800 and 2200, the
resulting legend is flat read and between 0 and 255:

[image: image.png]

Is there something I am doing wrong here?
Thanks,
Andrea
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