Fix crash in relief calculation when exporting distribution to csv

nyalldawson · nyalldawson · commit 1fe1a99eff59 · 2018-08-10T10:43:54.000+10:00
Fixes #19570 (cherry-picked from c860696)
diff --git a/src/analysis/raster/qgsrelief.cpp b/src/analysis/raster/qgsrelief.cpp
@@ -522,7 +522,7 @@ bool QgsRelief::exportFrequencyDistributionToCsv( const QString &file )
     for ( int j = 0; j < nCellsX; ++j )
     {
       elevationClass = frequencyClassForElevation( scanLine[j], minMax[0], frequencyClassRange );
-      if ( elevationClass >= 0 )
+      if ( elevationClass >= 0 && elevationClass < 252 )
       {
         frequency[elevationClass] += 1.0;
       }

Original file line number	Diff line number	Diff line change
`@@ -522,7 +522,7 @@ bool QgsRelief::exportFrequencyDistributionToCsv( const QString &file )`
`522`	`522`	`for ( int j = 0; j < nCellsX; ++j )`
`523`	`523`	`{`
`524`	`524`	`elevationClass = frequencyClassForElevation( scanLine[j], minMax[0], frequencyClassRange );`
`525`		`- if ( elevationClass >= 0 )`
	`525`	`+ if ( elevationClass >= 0 && elevationClass < 252 )`
`526`	`526`	`{`
`527`	`527`	`frequency[elevationClass] += 1.0;`
`528`	`528`	`}`