| plotting tool [message #7517] |
Tue, 26 November 1996 00:00  |
craig stevens
Messages: 7
Registered: May 1996
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Junior Member |
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Apologies up-front for the stupid question
but somewhere in my IDL/PVwave travels I have
come across a simple plotting tool for XY
plots with labels etc that seemed to be good
for those quick plots that are sometimes needed.
However this was some months ago & I can't
remember where I found it...I can't recall
if it was Wave or IDL, official lib or a user
file.
If someone could suggest what routine I was
looking at I would be v. happy. thanks
Craig
--
Craig Stevens: Air-Sea Interaction
Natl. Inst. Water & Atmos. Research
po box 14-901 Kilbirnie WGTN New Zealand
fx 64 (0)4 386 2153 ph 64 (0)4 386 0476
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| Re: plotting tool [message #7595 is a reply to message #7517] |
Thu, 05 December 1996 00:00  |
Mark Hadfield
Messages: 783
Registered: May 1995
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Senior Member |
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Robert Moss <mossrm@texaco.com> wrote in article
<32A45EB8.41C67EA6@texaco.com>...
> Craig Stevens wrote:
>>
>> Apologies up-front for the stupid question
>> but somewhere in my IDL/PVwave travels I have
>> come across a simple plotting tool for XY
>> plots with labels etc that seemed to be good
>> for those quick plots that are sometimes needed.
>>
>> ...
>>
>> If someone could suggest what routine I was
>> looking at I would be v. happy. thanks
>>
> You are probably thinking of the program called PWIDGET. You can find
> it in idl/lib/obsolete/pwidget.pro
>
Or maybe GRAFFER (README below). If you walk 3 doors down the corridor,
Craig, I'll show you my copy.
------------------------------------------------------------ -------------
GRAFFER
Author: James Tappin (sjt@star.sr.bham.ac.uk)
Version 1.03 -- January 1996
GRAFFER is an X-Y plot generating package written in IDL. It needs a
workstation or terminal supporting IDL widgets and at least version 4.0
of IDL.
The approach of GRAFFER is an essentially pragmatic one. It aimed to
fill the gap between the kind of simple plots that are trivial to do in
IDL just by using the plotting procedures from the IDL> prompt and the
sort of complex and specialised plots where it's worthwhile to write a
specific program.
The main features are:
* Can plot X-Y data with optional error bars (only vertical bars at
present): from a file, or from a simple text-widget editor, or from
arrays accessible at the $MAIN$ level in IDL.
* Can plot functions: y=f(x), x=f(y) or x=f(t) & y=g(t).
* Easy to change axis ranges, switch between log & linear plots and
other XSTYLE & YSTYLE options.
* Add text at arbitrary locations, orientations, fonts etc.
* Can put multiple plots on one set of axes - with different colours,
linestyles symbols etc. to distinguish them.
* Saves plots to an ASCII file which can be re-read & modified.
* Print to PostScript or save to EPS with customizable size &
orientation. (Also GIF, TIFF & NRIF dumps available).
GRAFFER has been tested on a Sparc 5 running Solaris 2.4 - it ought to
work on other unix systems and on VMS. Windows & Mac I'm much less
certain about -- all I can suggest is try it & see.
Usage:
GRAFFER may be freely used, copied & distributed but please:
1) Don't claim you wrote it.
2) If you change it make it clear which bit you've changed and don't
say I made the changes.
3) Let me know of you improvements.
Warranty: NONE - You didn't pay any money so you take your chance if
it's useful: GOOD, if it isn't you got what you paid for.
Maintenance: I'll try to fix bugs, but don't expect any new features.
S.J. Tappin sjt@star.sr.bham.ac.uk
School of Physics & Space Research
University of Birmingham
Birmingham U.K.
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| Re: plot [message #7826 is a reply to message #7517] |
Fri, 10 January 1997 00:00 |
Andy Loughe
Messages: 174
Registered: November 1995
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Senior Member |
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Mark A. Collier wrote:
>
> Hi there,
>
> IDL is new to me. Recently I tried to generate a filled contour plot
> with labels on southern hemisphere by using map_set and contour
<snip>
Try this sample code...
data = dist(46) ; create data
lons = indgen(46)*8. ; longitudes
lats = indgen(46)*4 - 90. ; latitudes
colors = indgen(25)+161 ; or whatever works for your color table
y1 = total(where(lats eq min(lats))) ; SH point
y2 = max(where(lats le 0)) ; Nearest-Equatorial point
map_set, -90, 0, 0, /stereo, limit=[-90,-180,0,180], /iso
contour, data(*,y1:y2), lons, lats(y1:y2), nlevels=25, /follow, /over
contour, data(*,y1:y2), lons, lats(y1:y2), nlevels=25, c_colors=colors,
$
/cell_fill, /over
map_continents
map_grid, latdel=30, londel=30, glinethick=1, lonlab=0
This is not a "perfect" plot, but those are VERY HARD to come by
using IDL mapping routines and with the cheesy contour program they
provide. Very unlike NCAR Graphics, at at 10 times the price!!
What a bargain. ;-(
Analysis? Yes.
Visualization? Maybe.
--
Andrew F. Loughe | afl@cdc.noaa.gov
University of Colorado, CIRES | http://cdc.noaa.gov/~afl
Campus Box 449 | phn:(303)492-0707 fax:(303)497-7013
Boulder, CO 80309-0449 | "If you are going to be blue, be bright
blue!"
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