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- From: israel@unixg.ubc.ca (Robert B. Israel)
- Newsgroups: sci.math
- Subject: Re: Mercator Projection
- Date: 8 Nov 92 08:42:09 GMT
- Organization: The University of British Columbia
- Lines: 16
- Message-ID: <israel.721212129@unixg.ubc.ca>
- References: <a34uTB4w165w@netlink.cts.com>
- NNTP-Posting-Host: unixg.ubc.ca
-
- In <a34uTB4w165w@netlink.cts.com> kfree@netlink.cts.com (Kenneth Freeman) writes:
-
- >My Mercator projection goes 'up' to only 84 degrees, ~the northern
- >tip of the classically huge Greenland. I'd like to know three things.
- >1) For a given area, what is its apparent increase in size for a
- >given latitude? I.e., what is the rate of increase the closer you
- >get a pole (and infinity)?
-
- At latitude t, linear dimensions are multiplied by sec(t), so areas are
- multiplied by sec^2(t).
-
- --
- Robert Israel israel@math.ubc.ca
- Department of Mathematics or israel@unixg.ubc.ca
- University of British Columbia
- Vancouver, BC, Canada V6T 1Y4
-