| Re: MAP_SET and !P.MULTI? [message #11306] |
Thu, 26 March 1998 00:00 |
Bob Yantosca
Messages: 6
Registered: March 1998
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Junior Member |
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> It is curious and certainly looks like a bug. The problem is
> that !P.Multi[0] is not getting updated properly (among
> several other curiosities). Rather than using the Position keyword,
> I fixed the code by doing this:
>
> !p.multi = [0,2,2]
> window,0,xsize=800,ysize=800
> ; xmin, ymin, xmax, ymax
> map_set, /continents, title='UL', /noerase
> !P.Multi[0] = 3
> map_set, /continents, title='UR', /noerase
> !P.Multi[0] = 2
> map_set, /continents, title=' LL', /noerase
> !P.Multi[0] = 1
> map_set, /continents, title=' LR', /noerase
> print,!p.multi
> end
>
> I don't know why the NoErase is still needed, except that
> something else is clearly not working correctly.
>
> Cheers,
>
> David
> -----------------------------------------------------------
> David Fanning, Ph.D.
> Fanning Software Consulting
> E-Mail: davidf@dfanning.com
> Phone: 970-221-0438
> Coyote's Guide to IDL Programming: http://www.dfanning.com/
>
>
For some reason, MAP_SET has never really advanced correctly
according to !P.MULTI (even in version 3.6 and 4.1).
What I've done to combat against this is the following
set advance keyword = 0 if !P.MULTI(0) = 0
= 1 otherwise
as is illustrated in the test program below:
=======================
pro testnew
; prints 4 maps in the UL, UR, LL, LR positions
!p.multi = [0, 2, 2, 0, 0]
for I = 0, 3 do begin
if (!P.MULTI(0) eq 0) then advance = 0 else advance = 1
map_set, 0, 0, 0, /grid, /cont, advance=advance
endfor
end
===============
Regards,
Bob Y.
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| Re: MAP_SET and !P.MULTI? [message #11345 is a reply to message #11306] |
Mon, 23 March 1998 00:00  |
wmc
Messages: 117
Registered: February 1995
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Senior Member |
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In article 70F6@magus.stx.com, Jack Saba <jack@magus.stx.com> writes:
> The following code (run with IDL 5.0.2) produces a plot with one image
> in the UL, and three images overplotted in the UR quadrant. Anyone
> understand why MAP_SET does not seem to work in conjuction with
> !P.MULTI?
>
> !p.multi = [0,2,2]
> map_set, /continents, title='UL', /noerase
> map_set, /continents, title='UR', /noerase
> map_set, /continents, title=' LL', /noerase
> map_set, /continents, title=' LR', /noerase
You need to say ",/advance". Then it all works fine.
- 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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| Re: MAP_SET and !P.MULTI? [message #11351 is a reply to message #11345] |
Sun, 22 March 1998 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Jack Saba (jack@magus.stx.com) wrote the other day:
> The following code (run with IDL 5.0.2) produces a plot with one image
> in the UL, and three images overplotted in the UR quadrant. Anyone
> understand why MAP_SET does not seem to work in conjuction with
> !P.MULTI?
>
> !p.multi = [0,2,2]
> window,0,xsize=800,ysize=800
> ; xmin, ymin, xmax, ymax
> map_set, /continents, title='UL', /noerase
> map_set, /continents, title='UR', /noerase
> map_set, /continents, title=' LL', /noerase
> map_set, /continents, title=' LR', /noerase
> print,!p.multi
> end
>
> The code can be made to work of course by using the POSITION keyword
> rather than !P.MULTI, but it seems curious that the code above doesn't
> work.
And then I wrote some nonsense like this:
> It is curious and certainly looks like a bug. The problem is
> that !P.Multi[0] is not getting updated properly (among
> several other curiosities).
My friend Andrew Cool at the DSTO in Adelaide, Australia
points out in the gentlest manner possible that I ought to
take my own advice and read the documentation before I jump
in with both feet. He suggests that the ADVANCE keyword
to MAP_SET might be just what we are looking for. Sure
enough, try this:
!p.multi = [0,2,2]
window,0,xsize=800,ysize=800
; xmin, ymin, xmax, ymax
map_set, /continents, title='UL', /advance
map_set, /continents, title='UR', /advance
map_set, /continents, title=' LL', /advance
map_set, /continents, title=' LR', /advance
END
But I am still left wondering, why ADVANCE?!
"Thanks, Andrew," he said sheepishly.
David
-----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
E-Mail: davidf@dfanning.com
Phone: 970-221-0438
Coyote's Guide to IDL Programming: http://www.dfanning.com/
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| Re: MAP_SET and !P.MULTI? [message #11364 is a reply to message #11351] |
Fri, 20 March 1998 00:00 |
davidf
Messages: 2866
Registered: September 1996
|
Senior Member |
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Jack Saba (jack@magus.stx.com) writes:
> The following code (run with IDL 5.0.2) produces a plot with one image
> in the UL, and three images overplotted in the UR quadrant. Anyone
> understand why MAP_SET does not seem to work in conjuction with
> !P.MULTI?
>
> !p.multi = [0,2,2]
> window,0,xsize=800,ysize=800
> ; xmin, ymin, xmax, ymax
> map_set, /continents, title='UL', /noerase
> map_set, /continents, title='UR', /noerase
> map_set, /continents, title=' LL', /noerase
> map_set, /continents, title=' LR', /noerase
> print,!p.multi
> end
>
> The code can be made to work of course by using the POSITION keyword
> rather than !P.MULTI, but it seems curious that the code above doesn't
> work.
It is curious and certainly looks like a bug. The problem is
that !P.Multi[0] is not getting updated properly (among
several other curiosities). Rather than using the Position keyword,
I fixed the code by doing this:
!p.multi = [0,2,2]
window,0,xsize=800,ysize=800
; xmin, ymin, xmax, ymax
map_set, /continents, title='UL', /noerase
!P.Multi[0] = 3
map_set, /continents, title='UR', /noerase
!P.Multi[0] = 2
map_set, /continents, title=' LL', /noerase
!P.Multi[0] = 1
map_set, /continents, title=' LR', /noerase
print,!p.multi
end
I don't know why the NoErase is still needed, except that
something else is clearly not working correctly.
Cheers,
David
-----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
E-Mail: davidf@dfanning.com
Phone: 970-221-0438
Coyote's Guide to IDL Programming: http://www.dfanning.com/
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