<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear Kunal,<div class="">I didn’t answer to the first email because I am not really familiar with <font face="Menlo" class="">shapefile</font> and masking over nations boundaries, but I guess there is a lot of documentation on the website. Is your a polygon just an approximation because you don’t know how to mask using the shape file or is it really what you wanted to do?</div><div class=""><br class=""></div><div class="">In order to extract the data you can either create a new variable where you mask the region outside of the polygon or where you put all the data inside of the polygon. I would use the first approach, since what you get is a variable with the same dimensions, but maybe the second one is easier. Since you have two arrays with <font face="Menlo" class="">lon</font>,<font face="Menlo" class="">lat</font> coordinates can’t you just create a new variable, called <font face="Menlo" class="">var2</font>, which is a subset of <font face="Menlo" class="">var</font>? </div><div class=""><br class=""></div><div class="">Assuming that var has dimension <font face="Menlo" class="">(time, lat, lon)</font> you can simply do that</div><div class=""><br class=""></div><div class=""><font face="Menlo" class="">var2=var(:,{lat},{lon})</font></div><div class=""><font face="Menlo" class=""><br class=""></font></div><div class="">The <font face="Menlo" class="">{}</font> means that you are using coordinate indexing, it should work also with array although I’m not 100% sure. With this method you will get a variable with different dimensions. Otherwise you can try to mask using logical staments. Assuming you have (<font face="Menlo" class="">clon,clat)</font> coordinates in your file (I used different names because of your definition in the script) you can try something similar</div><div class=""><br class=""></div><div class=""><font face="Menlo" class="">var2=mask(var, lon.ge.min(clon) .AND. lon.le.max(clon) .AND. lat.ge.min(clat) .AND. lat.le.max(clat), False)</font></div><div class=""><br class=""></div><div class="">Cheers</div><div class=""><br class=""></div><div class=""><div class="">
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<br class=""><div><blockquote type="cite" class=""><div class="">On 27 May 2016, at 12:31, Kunal Bali <<a href="mailto:kunal.bali9@gmail.com" class="">kunal.bali9@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class=""><div class="">Dear NCL<br class=""><br class=""></div>I tried to make the polygon of the selected region. I don't know i did it correctly or not, please let me know is it correct way to do or not.<br class=""><br class=""></div>Second thig is that I need to extract the data from selected polygon. Could anyone please let me know how to do it ?<br class=""><br class=""><br class=""><div class=""><div class="">Regards<br clear="all" class=""></div><div class=""><div class=""><div class=""><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class="">Kunal Bali<br class=""></div><br class=""><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div style="margin: 0px; border-collapse: collapse; font-family: Tahoma, Verdana; font-size: 12px;" class=""><font color="#1F497D" class=""><br class=""></font></div></div></div></div></div></div></div>
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