| Re: problem with map_set (what AM i seeing?) [message #10547] |
Wed, 17 December 1997 00:00 |
wmc
Messages: 117
Registered: February 1995
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Senior Member |
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In article 1@franklin.its.utas.edu.au, "Katrina Hill" <Katrina.Hill@utas.edu.au> writes:
>
> Just have a small question regarding map_set and HOPE that it can be
> resolved simply before I invest too much time!
>
> I have four corner points (these are polar points - about Casey
> station(Australian))
>
> -61.965556, 100.31250
> -61.966944,119.668330
> -69.170278, 123.185
> -69.168056, 96.789444
IDL generally (and somewhat irritatingly) tends to use long-lat coordinates,
which I suppose is fair enough since these are effectively "x-y". So if you
reverse all your points above, better things might well happen. A problem
for all of us used to thinking in "lat-long" terms, ah well.
The 4-element form of the limit is [s,w,n,e]
(if you use [n,w,s,e] then 5.02 will fail sometimes due to a bug in map_set_incr)
You probably want to add /iso to your map_set command
- William
---
William M Connolley | wmc@bas.ac.uk | http://www.nbs.ac.uk/public/icd/wmc/
Climate Modeller, British Antarctic Survey | Disclaimer: I speak for myself
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