<html><head></head><body><div style="font-family:bookman old style, new york, times, serif;font-size:16px;"><div>Hi,</div><div>I've plotted precipitation of some synoptic stations. I've gotten attached pictures with</div><div>"cnFillMode= RasterFill" (attached: plot_unstructured_grid_camseRaster.png),</div><div>"cnRasterSmoothingOn=True" (attached: plot_unstructured_grid_camseRaseterSmoothing.png).<br></div><div><div style="color: rgb(0, 0, 0); font-family: "bookman old style", "new york", times, serif; font-size: 16px;">"cnFillMode=AreaFill" (attached: plot_unstructured_grid_camseArea.png),</div><div><br></div></div><div>However I really want something like (Tang_2016.jpg, Fig.1-b), attached, which should be drawn by IDW (Inverse Distance Weighting) interpolation method. This picture is more smoother than mine and also much similar to GPM precipitation (attached: 20170411_16multibarV04.png).</div><div>Could I have you help about IDW in NCL to get smoother pictures from point data?</div><div><br></div><div>I've attached my script and all related files. I'll be thankful for any help.</div><div><i><br></i></div><div><i>Sincerely</i></div><div><i>Ehsan</i></div></div></body></html>