<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><div class=""></div><div class="">After several attempts I was able to plot the data using as bounds the “real” coordinates of the rotated projection, without specifying the center, e.g. :</div><div class=""><font face="Menlo" class=""><br class=""></font></div><div class=""><div class=""><font face="Menlo" class=""> Res1@tfDoNDCOverlay=True</font></div><div class=""><font face="Menlo" class=""> Res1@mpLimitMode = "Corners" </font></div><div class=""><font face="Menlo" class=""> Res1@mpLeftCornerLatF = 30.35458 </font></div><div class=""><font face="Menlo" class=""> Res1@mpLeftCornerLonF = -75.14440</font></div><div class=""><font face="Menlo" class=""> Res1@mpRightCornerLatF = 65.1125</font></div><div class=""><font face="Menlo" class=""> Res1@mpRightCornerLonF = 13.87071</font></div></div><div class=""><br class=""></div><div class="">But the contour plot is still slightly shifted to the west as you can see in this image:</div><div class=""><br class=""></div><div class=""></div></body></html>