| map_set problem [message #5813] |
Fri, 23 February 1996 00:00  |
sterner
Messages: 106
Registered: February 1991
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Senior Member |
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The following does not work for me for IDL. Version 4.0.1 (hp-ux hp_pa):
map_set,40,52.1,/cont
but map_set,40,52.2,/cont does work ok.
Does this problem occur on other systems besides HP?
By the way, a workaround is adding or subtracting 360 to the
longitude (Longitude must be in range of +/- 360 degrees).
Ray Sterner sterner@tesla.jhuapl.edu
The Johns Hopkins University North latitude 39.16 degrees.
Applied Physics Laboratory West longitude 76.90 degrees.
Laurel, MD 20723-6099
WWW Home page: http://fermi.jhuapl.edu/s1r/people/res/res.html
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| Re: map_set problem [message #5814 is a reply to message #5813] |
Fri, 23 February 1996 00:00  |
zawodny
Messages: 121
Registered: August 1992
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Senior Member |
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In article <sterner.825033938@warble.jhuapl.edu> sterner@warble.jhuapl.edu (Ray Sterner) writes:
> The following does not work for me for IDL. Version 4.0.1 (hp-ux hp_pa):
>
> map_set,40,52.1,/cont
>
> but map_set,40,52.2,/cont does work ok.
>
> Does this problem occur on other systems besides HP?
I have the same problem with IDL 4.0 running on a DEC alpha under
Digital UNIX.
Really quite strange, isn't it?
--
Dr. Joseph M. Zawodny KO4LW NASA Langley Research Center
E-mail: J.M.Zawodny@LaRC.NASA.gov MS-475, Hampton VA, 23681-0001
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| Re: map_set problem [message #6128 is a reply to message #5813] |
Mon, 22 April 1996 00:00 |
Robert Moss
Messages: 74
Registered: February 1996
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Member |
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Gary Fu wrote:
>
> Hello,
>
> I don't know why different font will cause the output of map_set different.
>
> In the following codes, the default font was changed after the first map_set
> and you will find that the two continent outlines do not match.
>
> This will cause problem (different results) if the images are saved from a
> console and from an X terminal with different default font.
>
> Is this a bug or a feature ? Either way, is there a solution on this ?
>
> Thanks.
>
> Gary
>
> ************************************************************ ************
> pro tmp
>
> window, xsize=300, ysize=300
> map_set, 0,0,0, proj=2, /contin, /noborder
> device, font='8x13'
> map_set, 0,0,0, proj=2, /contin, /noborder, color=10, /noerase
>
> end
> ************************************************************ ***********
Well, I tried this on my box (SunOS 4.1.3_U1, IDL 4.0.1c, X11R6, fvwm)
and did not see the problem you describe. The two continental outlines
overlayed perfectly as far as I could see...
Perhaps this is a system or IDL version specific problem...
Robert M. Moss, Ph.D.
Texaco Inc.
mossrm@texaco.com
---------------------------
This does not necessarily reflect the opinions of Texaco Inc.
---------------------------
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| Re: map_set problem [message #41827 is a reply to message #5813] |
Wed, 24 November 2004 07:32 |
K. Bowman
Messages: 330
Registered: May 2000
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Senior Member |
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In article <co1nul$7j3s$1@zam602.zam.kfa-juelich.de>,
Reimar Bauer <R.Bauer@fz-juelich.de> wrote:
> Dear all
>
> please could someone try the following example:
>
>
> The first grid line is not continous it is shifted about one pixel on my
> screeen. Did you see the same behaviour?
Hi Reimar,
I have completely given up on trying to use MAP_GRID to draw grids for
cylindrical projections. I always have problems at the left and right
edge and near the poles.
No amount of whining in this news group has helped. ;-)
The only approach I have found that works is something like the example
below. It is not general, but could be made so.
Ken Bowman
MAP_SET, /CYLINDRICAL, /ISOTROPIC, /CONT, /NOBORDER
xy1 = CONVERT_COORD(-180.0, -90.0, /TO_NORMAL) ;Lower left corner
xy2 = CONVERT_COORD( 180.0, 90.0, /TO_NORMAL) ;Upper right corner
x1 = xy1[0]
x2 = xy2[0]
y1 = xy1[1]
y2 = xy2[1]
nx = 4
dx = (x2 - x1)/nx
FOR i = 0, nx DO PLOTS, x1 + i*[dx, dx], [y1, y2], /NORMAL
ny = 6
dy = (y2 -y1)/ny
FOR j = 0, ny DO PLOTS, [x1, x2], y1 + j*[dy, dy], /NORMAL
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| Re: MAP_SET problem [message #62579 is a reply to message #5813] |
Sun, 21 September 2008 13:53 |
xiao zhang
Messages: 81
Registered: June 2008
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Member |
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On Sep 19, 4:20 pm, Jean H <jghas...@DELTHIS.ucalgary.ANDTHIS.ca>
wrote:
>> noerase,limit=[lon_min,lon_min,lat_max,lon_max],$
>> charsize = 1.5,COLOR=0
>
> you have a typo, try with:
>
> [lat_min,lon_min,lat_max,lon_max]
>
> Jean
Thank you very much :)
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| Re: MAP_SET problem [message #62586 is a reply to message #5813] |
Fri, 19 September 2008 14:20 |
Jean H.
Messages: 472
Registered: July 2006
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Senior Member |
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> noerase,limit=[lon_min,lon_min,lat_max,lon_max],$
> charsize = 1.5,COLOR=0
>
you have a typo, try with:
[lat_min,lon_min,lat_max,lon_max]
Jean
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| Re: MAP_SET problem [message #62587 is a reply to message #5813] |
Fri, 19 September 2008 13:55 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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xiao writes:
> HI~ guys, I have a problem here. I wrote the following program but the
> map_set command does show the grid lines , why is that?
I'm going to guess because you told it to with the GRID keyword.
Or, do you mean it does NOT show the grid lines? If this is
the case, you usually have to redraw the GRID lines and
continents over again after you display the image. Use
MAP_GRID and MAP_CONTINENTS to do so. (I usually leave
these keywords off the MAP_SET command because they do
absolutely no good if you are going to display an image in
the map.)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: MAP_SET problem [message #62588 is a reply to message #5813] |
Fri, 19 September 2008 13:54 |
pgrigis
Messages: 436
Registered: September 2007
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Senior Member |
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sure we could explain this... but why don't you try to figure it out
for yourself? Just try to run the commands one at a time and observe
their effect. That will go a long way teaching you how to find
problems
in your code.
Cheers,
Paolo
xiao wrote:
> HI~ guys, I have a problem here. I wrote the following program but the
> map_set command does show the grid lines , why is that? Thank you
>
> dimg is a two dimensional array ranging from 0 to 10
>
>
> device, decomposed=0,retain=2
> window,1,xsize=np,ysize=nl+10
> !P.background=FSC_Color('Gray')
> dd=fltarr(np,nl+10,3)
> dd(*,*,*)=255
> tv,dd,true=3
> ;; 0 1 2 3 4 5 6 7 8 9 10 11 12
> r=[255,255,000,204,000,153,102,051,123]
> g=[255,102,102,153,204,102,000,204,157]
> b=[255,153,102,102,102,204,051,204,190]
> tvlct,r,g,b
>
> lat_min=-38.18
> lat_max=-26.82
>
> lon_min=111.85
> lon_max=123.15
>
> Map_set,/continent,/grid,/
> noerase,limit=[lon_min,lon_min,lat_max,lon_max],$
> charsize = 1.5,COLOR=0
>
> TV,dimg,order=1
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