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Re: contour with logarithmic axis
- Subject: Re: contour with logarithmic axis
- From: davidf(at)dfanning.com (David Fanning)
- Date: Fri, 8 Jun 2001 09:29:03 -0600
- Newsgroups: comp.lang.idl-pvwave
- Organization: Fanning Software Consulting
- References: <3B20EB98.9A4A903@vaw.baug.ethz.ch>
- Xref: news.doit.wisc.edu comp.lang.idl-pvwave:25276
Hilmar GUDMUNDSSON GL D21 2-4093 (firstname.lastname@example.org) writes:
> I'm having problems with contour using a logarithmic x axis. When
> I contour the data using
> CONTOUR, matrix, x,y, xrange = [xmin, xmax], yrange = [ymin,
> ymax], $
> xtitle = x_t, ytitle = y_t, max_value = 1000., level = levels,
> the contour lines only appear on a part of the plot. Depending on the
> exact values of xmin and xmax, the fraction of the plotting area that is
> contoured changes in an erratic fashion. I can used alog10(matrix) and
> alog10(x), which produces a plot which is OK but I would rather like to
> stick to having the x axis logarithmic if possible.
> Has someone else run into this problem? Any solutions?
You are running into IDL's very persistent aesthetic
sensibilities about what constitutes "nice-looking"
axes. You have to hit it upside of the head. Try
setting the XSTYLE and YSTYLE keywords to 1. :-)
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: email@example.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155