QGIS » QGIS Application

it is confirmed by many, also on Linux.

Radim has already proposed a patch, that would be useful to test

--- src/core/qgsrasterprojector.cpp     (revision 15861)
+++ src/core/qgsrasterprojector.cpp     (working copy)
@@ -130,7 +130,7 @@
   mSrcExtent = [[QgsRectangle]]( myPoint.x(), myPoint.y(), myPoint.x(),
myPoint.y() );
   for ( int i = 0; i < mCPRows; i++ )
   {
-    for ( int j = 1; j < mCPCols - 1; j++ )
+    for ( int j = 0; j < mCPCols; j++ )
     {
       myPoint = mCPMatrix[i][j];
       mSrcExtent.combineExtentWith( myPoint.x(), myPoint.y() );

Odd, using trunk (same revision ) on both linux and windows I can reproduce the artifacts only under linux. On Windows it works fine

using this raster (epsg 3003)

https://int.faunalia.it/~paolo/dtm.tar.gz

and reprojecting it in epsg 4326

I fotgot to mention the strange no data data value (-340282346638528859811704183484516925440.000000) on the *.ADF files: the data type is 4-byte float, so there is something fishy with that.

I did manage however to create some errors and "screen" artifacts as seen on screenshots --artifacts created by using zoom full or layer extend. Those line-looking artifacts have a kind random behavior when changing the numeric scale number by a small amount, 1, 5 or so.

I can't make to replicate this artifacts at any scale with any tool.

Also, the Identify tool and Value Plugin report "Out of Extent"/"No features" right on top of the reprojected data?

The identify tool works fine (for me) on reprojected rasters, the value tool plugin was recently updated to work also with reprojected rasters.