RE: [pyngl-talk] Contour plot maps using pyNGL

Thanks a lot for that Mary. Is there any way to constrain the contour plot for "land" only? That's because it is data regarding human populations, so ocean/lakes are irrelevant for the contour.

Thanks again,

Yuval

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> Date: Thu, 19 Jun 2008 09:46:35 -0600
> From: haley_at_ucar.edu
> To: uvtravel_at_hotmail.com
> CC: pyngl-talk_at_ucar.edu
> Subject: Re: Contour plot maps using pyNGL
>
>
> On Thu, 19 Jun 2008, Yuval Itan wrote:
>
>>
>> Dear all,
>>
>> I would be grateful for advice regarding how to perform the following.
>>
>> I need to make a contour plot on the Eurasia map, longitude range of -15 to 85, and latitude range of 30 to 75. My values are frequency data of lactase persistence in about 50 locations around Eurasia.
>>
>> Any hint would be much appreciated.
>>
>> Thanks.
>
> Dear Yuval Itan,
>
> I've attached a sample PyNGL script (and png image) that creates a
> mercator map with the lat/lon limits you gave, and some dummy data
> overlaid.
>
> You can tweak and add resources (the "res" attributes) to further
> customize your map and contours. You can change things like the map
> projection, the color map, the size and font of your main title, the
> location of your labelbar, etc.
>
> The thing you will probably want to change are the sf* resources I
> set. The way they are set now, it's assuming that your values are
> evenly spaced across longitude and latitude. If you have arrays that
> define your lat/lon coordinates, then you'll want to set sfXArray and
> sfYArray instead.
>
> To help you get started with all this, you can visit our gallery
> (which has downloadable PyNGL and PyNIO scripts) at:
>
> http://www.pyngl.ucar.edu/Examples/gallery.shtml
>
> For specific examples on which examples use which resources (so you
> can search for examples that use sfXArray and sfYArray), see:
>
> http://www.pyngl.ucar.edu/Examples/resources.shtml
>
> If you are really new to PyNGL and/or Python, then you can check
> out our line-by-line tutorial:
>
> http://www.pyngl.ucar.edu/Tutorial/
>
> --Mary
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Received on Thu Jun 19 2008 - 10:24:42 MDT