comp.lang.idl-pvwave archive: archive » Coord

Home » Public Forums » archive » Coord_transform in axes

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

Coord_transform in axes [message #89639]

Mon, 03 November 2014 16:12

joellama
Messages: 8
Registered: July 2013

Junior Member

I am trying to add an axis to an image but am having some difficulty.

My array is the shape: values[150, 50] representing 150 days and 50 latitude bins for each day.

I'm plotting the image using

im = image(values)

and the image appears as expected but I want to add a y axis to label the values of theta. Each of the 50 latitude bins is uniform in sin(theta) going from -1 to +1 but I want the axis to be in terms of theta going from -90 to +90 degrees.

Ive looked at the coord_transform function in axis and that can get me from (-1, 1) to (-90, 90) but the scaling is then wrong because the latitude values aren't uniform in theta but sin(theta).

I'm completely drawing a blank on how to do this. Any help would be greatly appreciated!

Report message to a moderator

[Message index]

		Coord_transform in axes By: joellama on Mon, 03 November 2014 16:12
		Re: Coord_transform in axes By: joellama on Mon, 03 November 2014 16:17
		Re: Coord_transform in axes By: penteado on Thu, 06 November 2014 09:52

Previous Topic:	reading data with numbers and strings from data file
Next Topic:	Reading binary (.ply) file of varying header size

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Nov 28 07:15:32 PST 2025

Total time taken to generate the page: 0.00801 seconds