| image on map [message #58038] |
Sat, 12 January 2008 03:44 |
skymaxwell@gmail.com
Messages: 127
Registered: January 2007
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Senior Member |
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Hello
I have 'world.bmp' file. I load it to IDL. Set map projection by
MAP_SET. Then use MAP_IMAGE,
but image there must be 2D array so before i use REFORM. If i display
image by TV, it's now same colors as origin BMP file. So how fix it ?
and another question. My BMP file have size (600,360) when i use
MAP_SET some pixels on top and bottom don't used. i was looked in help
- MAP_SET use only [+80;-80] degrees on latitude. how use [-90;+90] ?
Here is fragment of my code
...
image=READ_BMP('C:\world.bmp',/RGB)
help,image
image0=REFORM(image[0,*,*])
help,image0
image1=REFORM(image[1,*,*])
help,image1
image2=REFORM(image[2,*,*])
help,image2
MAP_SET,E_HORIZON={fill:1,color:10},/HIRES,/NOBORDER,/
MERCATOR,XMARGIN=[0,0],YMARGIN=[0,0]
newImage0=MAP_IMAGE(image0,0,0,600,360,LATMIN=-90,LONMIN=-18 0,LATMAX=90,LONMAX=180)
image[0,*,*]=newImage0
tv,newImage0
;tv,image
map_continents,color=100,fill_continents=1,/HIRES
map_continents,/countries,color=34,/HIRES
....
Thanks
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