Plotting map data

Hello,

I have a text file containing 3 columns of data: Longitude, Latitude and the
their corresponding value.
There are missing coordinate values but they are no included in the list. I want
to be able to plot the data showing the gaps. If I do contour_map then
everything gets filled in. It seems that the only way I can get around this is
to manually put in the coordinates that have a missing value and assign a
_FillValue attribute.

Is there another way in NCL that I can plot the data on a map without having to
include the missing values and just plot the coordinates that are listed?

sample of my text file:

-179.50 -83.50 2.06218422311191e+18

-179.50 -82.50 2.20194218404584e+18

-179.50 -81.50 2.13624203495919e+18

-179.50 -80.50 1.92270691252096e+18

-179.50 -79.50 1.97066905283356e+18

-179.50 -77.50 1.87546962524897e+18

-179.50 -76.50 1.73247078507269e+18

-179.50 -75.50 1.69635004139386e+18

-179.50 -74.50 3.10375392456632e+18

-179.50 -71.50 1.83906513885069e+18

-179.50 -70.50 1.94054532045052e+18

-179.50 -69.50 1.86284145932606e+18

-179.50 -68.50 1.89290891045765e+18

-179.50 -67.50 1.65054741063768e+18

-179.50 -52.50 1.84016698694068e+18

-179.50 -51.50 1.86419956234479e+18

-179.50 -50.50 1.79983511372746e+18

-179.50 -49.50 1.84267036875869e+18

-179.50 -48.50 1.7015316273787e+18

-179.50 -47.50 1.64754931730665e+18

-179.50 -46.50 1.46223171768628e+18

-179.50 -39.50 1.7475926433674e+18

-179.50 -38.50 1.70060666322184e+18

Thank you,
Roberta Perkins

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Received on Fri Apr 25 2008 - 12:56:13 MDT