| Two x-axes [message #152] |
Wed, 30 October 1991 14:42  |
eparvier
Messages: 4
Registered: October 1991
|
Junior Member |
|
|
Hi,
Does anyone know of a relatively easy way to make a plot
in IDL have two different x-axes or scales? It is rather
common in textbooks and journal articles to see two curves on the
same plot, sharing the same y-axis scaling, but with different
corresponding x-axes (usually one on top and one on the bottom).
This could be done brute force, of course, but I was
wondering if there were any library routines to do this in a
general manner, instead of on a case-by-case basis.
Thanks for any advice,
Frank
|
|
|
|
| Re: Two x-axes [message #251 is a reply to message #152] |
Thu, 31 October 1991 09:32  |
jennifer
Messages: 8
Registered: October 1991
|
Junior Member |
|
|
eparvier@tramp.Colorado.EDU (EPARVIER FRANCIS G) writes:
< Does anyone know of a relatively easy way to make a plot
in IDL have two different x-axes or scales? It is rather
common in textbooks and journal articles to see two curves on the
same plot, sharing the same y-axis scaling, but with different
corresponding x-axes (usually one on top and one on the bottom).
This could be done brute force, of course, but I was
wondering if there were any library routines to do this in a
general manner, instead of on a case-by-case basis.>
This can be done fairly easily with a combination of calls to
PLOT and AXIS with various keywords, such as
;plot first set of data with x axis on bottom, y axis on left, no top axis
plot,x,y,/noerase,xstyle=8
;plot second set of data with x axis on top, same y axis
plot,x2,y,/noerase,xstyle=4,/noerase
axis,xaxis=1
There are a lot of options with these two procedures, so you should
be able to get what you want.
Jennifer Dungan jennifer@vessna.arc.nasa.gov
MS 242-4
NASA Ames Research Center
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
