<div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>As noted by Soma: a nice function <br></div><div><br></div><div><a href="https://www.ncl.ucar.edu/Document/Functions/Contributed/geolocation_circle.shtml"><b>https://www.ncl.ucar.edu/Document/Functions/Contributed/geolocation_circle.shtml</b></a><br></div><div><b><br></b></div><div><b>Available in<i> <a href="https://www.ncl.ucar.edu/prev_releases.shtml#6.5.0">version 6.5.0</a> </i>and later.</b></div><div><b><i><br></i></b></div><div><b><a href="https://www.ncl.ucar.edu/Applications/polyg.shtml">https://www.ncl.ucar.edu/Applications/polyg.shtml</a><i><br></i></b></div><div><b>Examples 24 & 25<i><br></i></b></div><div><b><i><br></i></b></div><div><b><i>Y</i></b>ou can specify 500km as your 'circle radius'.<b><i><br></i></b></div><div>Use in conjunction
with<b><i> <a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/gc_inout.shtml"><strong>gc_inout</strong></a> t</i></b>o mask data inside a great circle.<b><i>
</i></b></div><div>========</div><div><br></div><div>The following was created prior to the introduction of <b>geolocation_circle</b>. It offers an alternative approach: <b><br></b></div><div><b><br></b></div><div><b><a href="https://www.ncl.ucar.edu/Applications/mask.shtml">https://www.ncl.ucar.edu/Applications/mask.shtml</a><i><br></i></b></div><div><b>Example: Katrina_circle.ncl<i><br></i></b></div></div></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 18, 2019 at 1:49 AM Md. Jalal Uddin <<a href="mailto:dmjalal90@gmail.com">dmjalal90@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">I want to show the rainfall only within 500 km. Please look at the picture (within the circle).<div><br><div><img src="cid:ii_jte1rwtk0" alt="jan.png" width="472" height="472"><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 18, 2019 at 3:35 PM Soma Roy <<a href="mailto:somaroy892@gmail.com" target="_blank">somaroy892@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Try to use geolocation circle and based on that cut out the inner values by using mask option as available in ncl pages.<div dir="auto"><br></div><div dir="auto">Hope this idea help you...</div><div dir="auto"><br></div><div dir="auto">Cheers,</div><div dir="auto">Soma</div></div><br><div class="gmail_quote"><div dir="ltr">On Mon, Mar 18, 2019, 12:59 Md. Jalal Uddin <<a href="mailto:dmjalal90@gmail.com" target="_blank">dmjalal90@gmail.com</a> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">Hi all,</div><div>I wanted to extract rainfall within 500 km from certain lat and lon. I am not getting the right one. any suggestions?</div><div dir="ltr"><div><br></div><div><div>f = addfile("<a href="http://jan500.nc" rel="noreferrer" target="_blank">jan500.nc</a>", "r")</div><div> prc =f->pre(:,{75:100},{0:30})</div><div> lon = f->longitude</div><div> lat =f->latitude</div><div> prc_reorder = prc(time|:,latitude|:,longitude|:)</div><div><br></div><div> prc_reorder&latitude = lat</div><div> prc_reorder&longitude = lon</div><div><br></div><div>lat1 =(/5.5/)</div><div>lon1 = (/87.0/)</div><div><br></div><div>do i = 0,dimsizes(lat)-1</div><div> do j = 0,dimsizes(lon)-1</div><div><span style="white-space:pre-wrap"> </span> if gc_latlon(lat1,lon1,i,j,2,4) .lt.500 then</div><div><span style="white-space:pre-wrap"> </span> prc_reorder(:,i,j) = prc_reorder(:,i,j)<span style="white-space:pre-wrap"> </span></div><div> end if<span style="white-space:pre-wrap"> </span> </div><div> end do</div><div> end do</div><div>;;;;</div><div>Jalal</div>-- <br><div dir="ltr" class="gmail-m_5997808828198164344gmail-m_3248378027979423023m_5859459463358772312gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font size="2" color="#000000"><b>Md. Jalal Uddin</b></font></div><div dir="ltr">MSc in Applied Meteorology (English Language)<br>Nanjing University of Information, Science and Technology, China</div><div dir="ltr"><span style="letter-spacing:0.2px">B.Sc. in Disaster Management (Hons.) </span><br></div><div dir="ltr"><span style="letter-spacing:0.2px">Patuakhali Science and Technology University, Bangladesh.</span></div><div dir="ltr">Cell: +8613260859092, <span style="letter-spacing:0.2px">+8801792052662</span></div><div dir="ltr"><font size="2">Web: <a href="http://www.dmjalal90.weebly.com" rel="noreferrer" target="_blank">www.dmjalal90.weebly.com</a> <br>Facebook: jalal.hossen.39 <br>LinkedIn: <a href="https://bd.linkedin.com/in/md-jalal-uddin-80a026b0" rel="noreferrer" target="_blank">https://bd.linkedin.com/in/md-jalal-uddin-80a026b0</a> <br>Twitter: dmjalal90 <br>Skype: dmjalal90</font><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_5997808828198164344gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font size="2" color="#000000"><b>Md. Jalal Uddin</b></font></div><div dir="ltr">MSc in Applied Meteorology (English Language)<br>Nanjing University of Information, Science and Technology, China</div><div dir="ltr"><span style="letter-spacing:0.2px">B.Sc. in Disaster Management (Hons.) </span><br></div><div dir="ltr"><span style="letter-spacing:0.2px">Patuakhali Science and Technology University, Bangladesh.</span></div><div dir="ltr">Cell: +8613260859092, <span style="letter-spacing:0.2px">+8801792052662</span></div><div dir="ltr"><font size="2">Web: <a href="http://www.dmjalal90.weebly.com" target="_blank">www.dmjalal90.weebly.com</a> <br>Facebook: jalal.hossen.39 <br>LinkedIn: <a href="https://bd.linkedin.com/in/md-jalal-uddin-80a026b0" target="_blank">https://bd.linkedin.com/in/md-jalal-uddin-80a026b0</a> <br>Twitter: dmjalal90 <br>Skype: dmjalal90</font><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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