Fix for ticket #303 (tiffs with nulls display incorrectly). Just a few

missing checkes for NaN's.


git-svn-id: http://svn.osgeo.org/qgis/trunk@5999 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: g_j_m

src/raster/qgsrasterlayer.cpp

@@ -1620,7 +1620,7 @@ void QgsRasterLayer::drawSingleBandPseudoColor(QPainter * theQPainter,
   myQImage.setAlphaBuffer(true);
   myQImage.fill(qRgba(255,255,255,0 )); // fill transparent
 
-  //calculate the adjusted matrix stats - which come into affect if the user has chosen
+  //calculate the adjusted matrix stats - which come into effect if the user has chosen
   QgsRasterBandStats myAdjustedRasterBandStats = getRasterBandStats(theBandNoInt);
 
   int myRedInt = 0;
@@ -2829,7 +2829,7 @@ const QgsRasterBandStats QgsRasterLayer::getRasterBandStats(int theBandNoInt)
           double myDouble = readValue ( myData, myDataType, iX + iY * myXBlockSize );
 
           if ( fabs(myDouble - noDataValueDouble) < myPrecision ||
-               myDouble < GDALminimum )
+               myDouble < GDALminimum || myDouble != myDouble)
           {
             continue; // NULL
           }
@@ -2854,7 +2854,7 @@ const QgsRasterBandStats QgsRasterLayer::getRasterBandStats(int theBandNoInt)
               myRasterBandStats.maxValDouble = myDouble;
             }
             //only increment the running total if it is not a nodata value
-            if (myDouble != noDataValueDouble)
+            if (myDouble != noDataValueDouble || myDouble != myDouble)
             {
               myRasterBandStats.sumDouble += myDouble;
               ++myRasterBandStats.elementCountInt;
@@ -2902,7 +2902,7 @@ const QgsRasterBandStats QgsRasterLayer::getRasterBandStats(int theBandNoInt)
           double myDouble = readValue ( myData, myDataType, iX + iY * myXBlockSize );
 
           if ( fabs(myDouble - noDataValueDouble) < myPrecision ||
-               myDouble < GDALminimum )
+               myDouble < GDALminimum || myDouble != myDouble)
           {
             continue; // NULL
           }