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mapping/zooming [message #4804] Thu, 10 August 1995 00:00 Go to previous message
delp is currently offline  delp
Messages: 3
Registered: August 1995
Junior Member
I'm trying to display a map of the north polar region.

First, I'd like to have the window initialized with the continents between 55-90
degrees lat displayed. I've tried

map_set, 90, /grid, /continent, /azimuthal, limit=[55,-180,90,180]

but I get floating point errors. Any ideas?

Second, I'd like to draw a bounding box and have it's contents zoomed to fill the display.
I've written the code to draw the bounding box, I'm assuming that all I need to do is
recreate my map projection with the new center and dimension parameters. Is this correct?

Third, does IDL provide routines to convert screen coordinates to lat/lon in a given
projection (and vice-versa)?

Thanks alot,

Steve
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