Hi,<br><br>In pst-3dplot, is it possible to use consecutive rotation angles about same axis?<br><br>In the following example,<br>How can transform x,y,z system to x',y',z' system using a transform matrix<span style="font-family: Courier;"></span> given by<br>P=Rz(-15)Ry(10)Rz(-10)<br><span style="font-family: Courier;"><br>% Rot sequence Rz(-10), Ry(15), Rz(-15)</span><br><span style="font-family: Courier;">%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ok&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ok&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ??</span><br><span style="font-family: Courier;">\pstThreeDCoor[eulerRotation=true,RotZ=-10,RotY=15,RotSequence=zyx,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; linestyle=dashed,nameX=$x'$,nameY=$y'$,nameZ=$z'$]</span><br><br style="font-family: Courier;"><br>Thanks,<br>Aydin<br><br><span style="font-family: Courier;"></span>