comparison layer/Colour3DPlotLayer.cpp @ 1247:c72d78d7890a

Ensure threshold is equal to minValue; default of 0 is inadequate when minValue < 0 (fixes bug that made all negative values appear black)

         
         if (maxValue <= minValue) {
             maxValue = minValue + 0.1f;
         }
 
+        cparams.threshold = minValue;
         cparams.minValue = minValue;
         cparams.maxValue = maxValue;
         
         m_lastRenderedMags[viewId] = MagnitudeRange(float(minValue),
                                                     float(maxValue));