Hi Vincent, By default the location of labels on contour lines are placed where the algorithm determines that there is space for them to be visible. If your plot is crowded with many contours, few if any labels will be seen: yes? use etopo60 yes? contour rose ! I see just a few labels of the zero level yes? contour/x=220:300/y=20:60 rose ! Now several labels show up. The PPL CONSET command can be used to control how many labels appear on a contour plot. The parameter you want to set is the 8th in the list, dslab = nominal distance between labels on a contour line. Compare these two plots: yes? use etopo60 yes? set region/x=200:300/y=20:60 yes? contour/set rose yes? ppl conset 0.08, , , , , , , 1 yes? ppl contour yes? contour/set rose yes? ppl conset 0.08, , , , , , , 3 yes? ppl contour Please see "contour, pplus controls" and the entry "contouring" in the Users Guide index. These point to a long section on contouring which explains the options. There is also a demo script which may help you see what you need to do. yes? go custom_contour_demo.jnl Ansley Manke Vincent Le Fouest wrote: Dear ferreters, Using a CONTOUR command, all my labeled values corresponding to my isolines do not appear on my graph. Is there a command to change this? Thanks! Vincent |