<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi,<div class="">if you have a _FillValue correctly set I would advise you to replace the data of SST in that box with missing values. It will keep the dimensionality but prevent you from using those data when computing the correlation.</div><div class="">You can use the where function (<a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/where.shtml" class="">https://www.ncl.ucar.edu/Document/Functions/Built-in/where.shtml</a>). Look at Example #3</div><div class=""><br class=""></div><div class="">Cheers</div><div class=""><br class=""><div class=""><div><blockquote type="cite" class=""><div class="">On 29. Aug 2017, at 10:01, Dinuka Silva <<a href="mailto:dinu.kera@gmail.com" class="">dinu.kera@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><span style="font-size:12.8px" class="">Hi all,</span><br class=""><div class=""><span style="font-size:12.8px" class=""><br class=""></span></div><div class=""><span style="font-size:12.8px" class="">I want to remove SST data of one box ({03N - 12N}, {90E- 140E}) and then find the correlation between remaining SST data and rainfall index. I want to know how can I remove the SST data of that box.</span></div><div class=""><span style="font-size:12.8px" class=""><br class=""></span></div><div class=""><span style="font-size:12.8px" class="">Thank you .</span><span style="font-size:12.8px" class=""><br class=""></span></div><div class=""><span style="font-size:12.8px" class=""><br class=""></span></div><div class=""><span style="font-size:12.8px" class="">Dinuka</span></div></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" class=""><br class="">
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