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Re: Limit on Polar Stereographic Projection? [message #10625]

Mon, 05 January 1998 00:00

wmc
Messages: 117
Registered: February 1995

Senior Member

In article v92@news.arc.nasa.gov, lin@ice.arc.nasa.gov (Jin-Sheng Lin) writes:
>
> Hi IDL users,
>
> Can a polar stereographic map projection allow a specification
> of map boundary?

Yes

> Our Linux idl does not cut out the quadrant, but makes an ugly
> plot that extends outside the limiting -30 degree latitude circle
> out along the plot window's diagonals.

This is what happens on our Alpha's, too. I've always considered it normal.
When you come to, say, contour the plot, you'll find the contours only fit
within the 30 S circle!

If you don't like the excess, you can use polyfill to overwrite outside 30 S.

- 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: Limit on Polar Stereographic Projection?

By: wmc on Mon, 05 January 1998 00:00

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