<div dir="ltr"><div><div><div><div><div>The lat lon value 108 and 500 etc is giving the index of lat lon not the exact lat lon in degrees; there are actually 360 *720 lat lon points and for testing purpose I have selected a part of the file.<br><br></div>I want to create a 2D variable say Var(lat,lon) where for each grid point there must be a single value of the variable. But the ascii file contains lat, lon,var in three different column.<br><br></div>Say for example the third row I want Var(lat,lon)=0.06 which should corresponds to the grid where lat=108 and lon=523.<br></div>Hope I am able to make it clear what I want.<br><br></div>Thanks,<br></div>Ipsita<br><div><div><div><br><br><div><br></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 26, 2014 at 9:46 PM, Mary Haley <span dir="ltr"><<a href="mailto:haley@ucar.edu" target="_blank">haley@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-size:small">Ipsita,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">You are creating an 18 x 18 2D array to hold your data, but you only have a 1D array of 18 values. </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Also, I don't know what you mean by "2-dimensional coordinate variable". </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">What you have is a collection of 18 random points, each with a lat/lon point associated with it. This cannot be represented by a 2D array with lat/lon coordinate arrays.</div><div class="gmail_default" style="font-size:small"><br>Also, the latitude values all have a value of "108", and the longitude values are all greater than 500. Are you sure these values are actually lat/lon?</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">--Mary</div><div class="gmail_default" style="font-size:small"><br></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Wed, Nov 26, 2014 at 3:54 AM, Ipsita Putatunda <span dir="ltr"><<a href="mailto:ipsita.putatunda@gmail.com" target="_blank">ipsita.putatunda@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div><div><div>Dear NCL users,<br></div> I have an ASCII file (tt.txt) with data in 3 columns for latitude longitude and variable respectively. Am reading this data using asciiread and trying to create a 2 dimensional coordinate variable with the same lat lon and variable values.But the output is giving all undefined values. Any help in this issues will be appreciated. My script is attached herewith. <br><br></div>Thanks,<br></div>Ipsita<br></div>
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