Re: 3-D scatter plots

From: Mary Haley (haley AT XXXXXX)
Date: Wed Jun 11 2003 - 13:33:06 MDT

  • Next message: Jeff Whitaker: "landscape plots"

    >
    > Hi All
    >
    > Does any one know if it is possible to do 3-D scatter plots in NCL? I
    > have found examples of 3-D surfaces, however all I need is a scatter
    > plot. Thanks.
    >
    > Scott Snodgrass
    >

    All,

    I responded to Scott off-line and sent him an NCL script that uses
    some routines that haven't been advertised. The NCL script generates
    a plot that looks like the one at:

      http://ngwww.ucar.edu/ngdoc/ng/ngmath/shgrid/plot1.html

    These routines are nothing more than direct interfaces to our
    low-level 3D plotting package called Tdpack. You can see the
    documentation for Tdpack, which is a Fortran/C library, at:

       http://ngwww.ucar.edu/ngdoc/ng/supplements/tdpack/

    I haven't advertised these Tdpack routines because at the NCL level,
    we normally don't do graphics in this fashion (that is, as direct
    calls to our low-level package, rather than via an object-oriented
    interface). You can't set resources in the normal fashion, for one
    thing, which is what doing in graphics in NCL is all about.

    We realize 3D graphics is not a highlight of NCL, and this is
    something we are currently researching and hope to improve.

    Meanwhile, if anybody is interested in these low-level routines, send
    me email and I'll send you an example if I have one that does what
    you're looking for.

    Cheers,

    --Mary

    > ********************************************
    >
    > Scott Snodgrass
    > Student Assistant
    > National Center for Atmospheric Research
    > Research Application Program
    > P.O. Box 3000, Boulder, CO 80307-3000
    > Phone: 303-497-2829
    >
    > ********************************************
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    > ncl-talk mailing list
    > ncl-talk AT ucar.edu
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    > 

    -- 
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Mary Haley                   haley AT ucar.edu
NCAR/SCD/VETS                303-497-1254 (voice)
1850 Table Mesa Dr           303-497-1804 (fax)
Boulder, CO  80305
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