topic How do I show contours on a log scale? in Graphics Programming

How do I show contours on a log scale?

Gareth — Mon, 09 Sep 2013 12:30:37 GMT

G'day,

In making a contour plot I have contours varying by orders of magnitude. So, displaying them on a linear scale is an issue.

Is it possible to display the contours on a log scale?

Any help would be much appreciated

Re: How do I show contours on a log scale?

ballardw — Mon, 09 Sep 2013 14:51:39 GMT

You don't say which procedure you're using. If JMP I have no clue.

The approach is similar as the Axis controls the scaling of charts. If using the Gcontour procedure specify log axis in AXIS statements then associate the Haxis and Vaxis with the appropriate Axis statement.

Axis1 logbase=10;

then in Gcontour plot statement

Haxis=axis1

Vaxis=axis1

with minimal specifications.

If in Sgraphics then options yaxisopts=(logopts=(base=10)) and similar for X

Each approach has different options for tick marks displayed and intervals

Re: How do I show contours on a log scale?

Gareth — Mon, 09 Sep 2013 22:33:50 GMT

Sorry. Yes I'm using JMP10 making a contour plot like the one below