Sample OPJ to download to try: isometic layer.opj
(ORG-2681)
For 2D Graphs, it's on Size/Speed tab of Layer level of Plot Details dialog. When this option is selected, X and Y axes will be forced to have the same length in pixel for the same scale increment. The check box will be hidden when the scale is not linear.
For 3D graphs, it's on Axis tab of Layer level in Plot Details dialog.
