comp.lang.idl-pvwave archive: archive » Re: Mapping question...

Home » Public Forums » archive » Re: Mapping question...

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Mapping question... [message #25392 is a reply to message #25389]

Mon, 11 June 2001 09:01

Paul van Delst
Messages: 364
Registered: March 1997

Senior Member

Guillaume Dargaud wrote:
>
> For lack of a better place, I'll ask it here even though it is not IDL
> specific (but I will probably implement it in IDL).
>
> I need to make maps of the world in a special way (I don't even know what
> this is called, so if anybody can provide me with a keyword...)
> Say you have a quantity of rain per sq degrees and you want to enlarge the
> surface area of places where it rains a lot and shrink the surface area of
> dry places... You end up with a tiny sahara, but large tropical zones...
> How would you go to do something like that...?
> I have seen it done before, but don't know what this kind of mapping is
> called.

Bad mapping? :o)

It doesn't sound like it will produce an easy to understand map, but what would I know.
FWIW, I'm always suspicious of maps/graphs that use area as a graphing dimension since
area is a squared quantity and usually the number used to calculate the area is not scaled
for this leading to a biased plot that emphasises the larger values (like when graphs use
different sized circles and/or squares to represent a 3rd dimension in a 2d plot.).

cheers,

paulv

--
Paul van Delst A little learning is a dangerous thing;
CIMSS @ NOAA/NCEP Drink deep, or taste not the Pierian spring;
Ph: (301)763-8000 x7274 There shallow draughts intoxicate the brain,
Fax:(301)763-8545 And drinking largely sobers us again.
Alexander Pope.

Report message to a moderator

[Message index]

		Re: Mapping question... By: Peter Halls on Mon, 11 June 2001 23:28
		Re: Mapping question... By: Guillaume Dargaud on Mon, 11 June 2001 16:42
		Re: Mapping question... By: James B Guthrie on Mon, 11 June 2001 12:56
		Re: Mapping question... By: Dick Jackson on Mon, 11 June 2001 12:42
		Re: Mapping question... By: Paul van Delst on Mon, 11 June 2001 09:01

Previous Topic:	IDLgrWindow Pickdata on an IDLexObjView Obect.
Next Topic:	Re: IDLgrWindow Pickdata on an IDLexObjView Obect.

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 11 03:53:44 PDT 2025

Total time taken to generate the page: 1.04059 seconds