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Re: Plot single data points in IMAP [message #68665 is a reply to message #68644]

Thu, 05 November 2009 08:55

penteado
Messages: 866
Registered: February 2018

Senior Member
Administrator

On Nov 5, 11:35 am, "Karlo Janos" <groups.20.beam...@spamgourmet.com>
wrote:
> Dear all,
>
> I am wondering if it is possible to plot single data points in a map
> set produced with IMAP.
> In the help document I only found examples for overplotting IMAP with
> images or vector fields with regularly gridded.
>
> In direct graphics mode I would use "MAP_SET, ..." and then plot single
> data points by "PLOTS, lons, lats, ...". In this case "lons" and "lats"
> can be arbitrary coordinates from the intervals [-180; 180] and
> [-90;90], respectively.
> Is there any way to get a similar result with IMAP?
>
> Thanks in advance,
>
> Karlo

I think you need to use iplot to overplot on the imap, with your lats
and lons converted to cartesian coordinates. As an example:

lats=[60.,30.,0.,-60.,-45.,60.]
lons=[-60.,0.,120.,30.,-60.,-60.]
imap,map_projection='sinusoidal'
mp=map_proj_init('sinusoidal')
xy=map_proj_forward(lons,lats,map_structure=mp)
iplot,xy,/over,color=[255,0,0]

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[Message index]

		Re: Plot single data points in IMAP By: penteado on Tue, 10 November 2009 13:22
		Re: Plot single data points in IMAP By: Karlo Janos on Tue, 10 November 2009 04:23
		Re: Plot single data points in IMAP By: penteado on Thu, 05 November 2009 08:55
		Re: Plot single data points in IMAP By: kidpix on Wed, 27 April 2011 07:52

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