<div dir="ltr"><div class="gmail_default" style="font-size:small">Dipak,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">I do see your other message to me offline, but I will send this example in case it helps. Sorry it took so long. </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">This example uses the HGT variable on a WRF output file, because this is an easy one to see if the values look correct. I then used the USA_adm shapefile to get all the counties in Pennsylvania (mostly so it would run faster while I was testing it) and averaged the HGT value over each county. The function that does the averaging also draws filled polygons on a map plot of the averaged area, so you can compare the plots.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">See the attached script, and the final PNG image which shows the original HGT field as a filled contour plot, and then the HGT field over Pennsylvania only, averaged for each county.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">--Mary</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 4, 2015 at 4:04 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">I will create an example for you soon, based on shapefiles_14.ncl and shapefiles_11.ncl</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 Tue, Mar 3, 2015 at 2:13 PM, Dipak Sahu <span dir="ltr"><<a href="mailto:dipakmath@gmail.com" target="_blank">dipakmath@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><div>Dear NCL developers and experts<br></div> Now I
have some issues with wrfout files from WRF model. I need to extract the polygon
average value of surface temperatures for each polygon using a shapefile
over southern California. I have the shapefiles with .shp, .dbf, .sbx,
.shx and .sbn. <br><br></div><div>I just able to plot the variables for different polygon (i.e, for different county) with the help of the sample script "shapefiles_11.ncl", but still I am facing problem how to make the average over the county and how to save the masked county data in .nc file or .csv file with latitude, longitude and variable.<br></div><div><br></div>I am waiting for any suggestions and help from the NCL experts how to resolve this issue. If any sample scripts are there it will be more appreciable.<br><br></div>with thanks and regards<span><font color="#888888"><br></font></span></div><span><font color="#888888">Dipak<div><div><div dir="ltr"><br></div></div></div>
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