<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=""><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class="">Hello and Warm Greetings !!</font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class=""><br class=""></font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class="">I am Prashanth, a PhD student at Purdue and I primarily study hurricanes. I had a quick question regarding NCL that I was hoping you’d help me with. </font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class=""><br class=""></font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class="">Say I have WRF output on standard lat/lon grid. I am interested in converting all the data to storm-centric (I know the coordinates of the moving storm center), cylindrical coordinates. That is lat-lon (x,y,z) to r, theta and z. Can you please tell me as to what the best way to do this is using NCL? </font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class=""><br class=""></font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class="">I also noticed that NCL had a cylindrical equidistant projection? However, I understand that this is only for plotting? I am guessing I need to do a coordinate transform compulsorily because I intend to take a Fourier transform in the theta direction. </font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class=""><br class=""></font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class="">Any direction from your end will be greatly appreciated. </font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class=""><br class=""></font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class="">Please help me out. </font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class=""><br class=""></font></div><div class="" style="font-family: PalatinoLinotype-Roman;"><font face="Palatino" size="3" class="">Prashanth </font></div></body></html>