comp.lang.idl-pvwave archive: archive » overplotting contours on a map

Home » Public Forums » archive » overplotting contours on a map

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

Re: overplotting contours on a map [message #75451 is a reply to message #75398]

Mon, 07 March 2011 13:43

chris_torrence@NOSPAM is currently offline

chris_torrence@NOSPAM
Messages: 528
Registered: March 2007

Senior Member

On Mar 1, 12:22 pm, "barry.baker" <barry.d.ba...@gmail.com> wrote:
> I just upgraded to idl 8 and was playing around with it. I was trying
> to overplot some contours onto a map and when I do this the graphics
> window resizes the map itself and doesn't plot the contours. I can do
> this the old way using the procedure but I was trying to use the newer
> functions. here is the code I have
>
> map = MAP('Cylindrical Equal Area', LIMIT =
> [floor(min(lat)),floor(min(lon)),ceil(max(lat)),ceil(max(lon ))])
> grid = map.MAPGRID
> grid.LABEL_POSITION = 0
> grid.LINESTYLE = "dotted"
> grid.LABEL_ANGLE= 0
> m1 = MAPCONTINENTS(/USA, FILL_COLOR="white", COMBINE=0)
>
> mm = contour(reform(uint[*,*,6,0]),lon,lat,/overplot)
>
> here lon and lat both 2x2 matrices the same size as the first two
> elements in uint. any help would be appreciated.

Hi Barry,
I think this is really close. You just need to add
GRID_UNITS='degrees' in your CONTOUR() call.
-Chris
ITTVIS

Report message to a moderator

[Message index]

		overplotting contours on a map By: barry.baker on Tue, 01 March 2011 11:22
		Re: overplotting contours on a map By: chris_torrence@NOSPAM on Mon, 07 March 2011 13:43

Previous Topic:	Re: HASH question
Next Topic:	IDL 8.0 image() scaling

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 11 02:56:28 PDT 2025

Total time taken to generate the page: 0.24197 seconds