<div dir="ltr"><div class="gmail_default" style="font-size:small">[I'm reposting this because my original post had an attachment over 2 MB and I had to reject my own post!]</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><div class="gmail_default">It always helps to look at things graphically if the regridding is not working. Also, you really need to look more closely at your data, because several time steps had all constant data.</div><div class="gmail_default"><br></div><div class="gmail_default">I'm not sure what you are saying is wrong about the regridding.</div><div class="gmail_default"><br></div><div class="gmail_default">I have a template for creating a panel plot of original data and regridded data, so I used this on your data.</div><div class="gmail_default"><br></div><div class="gmail_default">There are some things to note:</div><div class="gmail_default"><br></div><div class="gmail_default">[1] Your regridded data is in a smaller area than the original data, so obviously you cannot fully regrid the original data.</div><div class="gmail_default"><br></div><div class="gmail_default">[2] You probably don't want to use bilinear interpolation to regrid precipitation data. "Conserve" might be a better match.</div><div class="gmail_default"><br></div><div class="gmail_default">[3] For some of your time steps, the rain data is all constant. </div><div class="gmail_default"><br></div><div class="gmail_default">To check if it was constant across all time steps, I created an animation. I then realized that your precipitation data is very sparse and most of the "interesting" parts are happening outside the area that you are regridding to, so this makes for several plots that are all one color. I then decided to try regridding temperature instead, to make sure things were working.</div><div class="gmail_default"><br></div><div class="gmail_default">----</div><div class="gmail_default"><br></div><div class="gmail_default">See the attached trial_mod.ncl, which is your regridding script with plotting added. This script regrids temperature instead of precipitation. As you can see from one of the PNGs that I attached (the GIF animation was too large to attach), the regridding appears to be working. </div><div class="gmail_default"><br></div><div class="gmail_default">If you try to regrid rain, you will see that the plot is not very interesting. This is because I haven't made the effort to pick better levels for precipitation. You can take this script and modify it for your own purposes.</div><div class="gmail_default"><br></div><div class="gmail_default">--Mary</div><div><br></div><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Dec 4, 2017 at 9:58 AM, Mary Haley <span dir="ltr"><<a href="mailto:haley@ucar.edu" target="_blank">haley@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-size:small">Ronald,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">It always helps to look at things graphically if the regridding is not working. Also, you really need to look more closely at your data, because several time steps had all constant data.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">I'm not sure what you are saying is wrong about the regridding.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">I have a template for creating a panel plot of original data and regridded data, so I used this on your data.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">There are some things to note:</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">[1] Your regridded data is in a smaller area than the original data, so obviously you cannot fully regrid the original data.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">[2] You probably don't want to use bilinear interpolation to regrid precipitation data. "Conserve" might be a better match.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">[3] For some of your time steps, the rain data is all constant. </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">To check if it was constant across all time steps, I created an animation. I then realized that your precipitation data is very sparse and most of the "interesting" parts are happening outside the area that you are regridding to, so this makes for several plots that are all one color. I then decided to try regridding temperature instead, to make sure things were working.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">See the attached trial_mod.ncl, which is your regridding script with plotting added. This script regrids temperature instead of precipitation. As you can see from the attached animation, the regridding appears to be working. </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">If you try to regrid rain, you will see that the plot is not very interesting. This is because I haven't made the effort to pick better levels for precipitation. You can take this script and modify it for your own purposes.</div><span class="HOEnZb"><font color="#888888"><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">--Mary</div><div class="gmail_default" style="font-size:small"><br></div></font></span></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Dec 4, 2017 at 12:55 AM, Ronald Opio <span dir="ltr"><<a href="mailto:opioronald123@gmail.com" target="_blank">opioronald123@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello Dennis. <div><br></div><div>I have tried this and am still experiencing the same problem. No change is happening to the file I want to re-grid. </div><div><br></div><div>Please have a look at it and see. I have attached the wrf file as a google drive link plus the script am using and the GPM rainfall file (<a href="http://precip.nc" target="_blank">precip.nc</a>).</div><div><br></div><div>My intention is to regrid the wrf file so that it has the same dimensions as the precip file. </div><div><br></div><div>Please help out.</div><div><br></div><div>Sincerely,</div><div><br></div><div>Ronald.<div class="gmail_chip gmail_drive_chip" style="width:396px;height:18px;max-height:18px;background-color:rgb(245,245,245);padding:5px;color:rgb(34,34,34);font-family:arial;font-style:normal;font-weight:bold;font-size:13px;border:1px solid rgb(221,221,221);line-height:1"><a href="https://drive.google.com/file/d/1DEV9Kdp3VRH-7oHtBjNfvqhdyvY-9ABj/view?usp=drive_web" style="display:inline-block;max-width:366px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-decoration:none;padding:1px 0;border:none" target="_blank"><img style="vertical-align:bottom;border:none" src="https://ssl.gstatic.com/docs/doclist/images/icon_10_generic_list.png"> <span dir="ltr" style="color:rgb(17,85,204);text-decoration:none;vertical-align:bottom">wrf.nc</span></a><img style="opacity:0.55;float:right;display:none"></div></div></div><div class="m_5059910433624172539HOEnZb"><div class="m_5059910433624172539h5"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 29, 2017 at 7:34 PM, Dennis Shea <span dir="ltr"><<a href="mailto:shea@ucar.edu" target="_blank">shea@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>regridding: I am not sure what you mean by:<br></div><span> "It runs well, however, when I check the file after, I find that the WRF file still remains with its original grid size."<br><br></span>=== <br></div><b>The original file is never overwritten</b>. <br></div><div><div>===<br>Suggestion:<br> rain = r1 + r2 ; all meta data is lost<br></div><div> rain@long_name = "Total Rain" ; whatever<br></div><div> rain@units = r1@units<br></div><div> copy_VarCoords(r1, rain)<br><br>---<br> raingrid = ESMF_regrid(rain,Opt) ; Regrid "rain" to new grid <br></div><div> printVarSummary(raingrd)<br><br><br></div><div><br><div><div><br></div> </div></div></div></div><div class="m_5059910433624172539m_-1646705454077022472HOEnZb"><div class="m_5059910433624172539m_-1646705454077022472h5"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 29, 2017 at 8:14 AM, Barry Lynn <span dir="ltr"><<a href="mailto:barry.h.lynn@gmail.com" target="_blank">barry.h.lynn@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi:<div><br></div><div>Do you mean how to make single maps, or do you mean how to turn a pdf or pngs into a gif?</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 29, 2017 at 2:52 PM, Ronald Opio <span dir="ltr"><<a href="mailto:opioronald123@gmail.com" target="_blank">opioronald123@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Thank you Barry. Let me give this a try.<div><br></div><div>Could you be having a script for animating total precipitation in this way <a href="https://www.youtube.com/watch?v=SW1rA-M6l4s" target="_blank">https://www.youtube.com/wa<wbr>tch?v=SW1rA-M6l4s</a> ? </div><div><br></div><div>If so, please share with me.</div><div><br></div><div>Sincerely,</div><div><br></div><div>Ronald.</div></div><div><div class="m_5059910433624172539m_-1646705454077022472m_3258554146209653172h5"><div class="m_5059910433624172539m_-1646705454077022472m_3258554146209653172m_-1025363590452988400HOEnZb"><div class="m_5059910433624172539m_-1646705454077022472m_3258554146209653172m_-1025363590452988400h5"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 29, 2017 at 2:24 PM, Barry Lynn <span dir="ltr"><<a href="mailto:barry.h.lynn@gmail.com" target="_blank">barry.h.lynn@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Dear Ronald:<div><br></div><div>I have used regrid to regrid to both the original WRF grid and a more sparse grid. However, its main task is to regrid to the original grid in rectilinear coordinates (unless you tell it otherwise). </div><div><br></div><div>You can interpolate from a fine grid to a coarse grid using the programs available (e.g., <span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0);font-family:"Courier New"">area_hi2lores_Wrap).</span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0);font-family:"Courier New""><br></span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="georgia, serif">Please see lines 320,386 in the program attached (that calculates frontogenesis). In this program, I used a more sparse version of the WRF grid as the destination grid. If you are going to use a grid from a different data set, then it would be best if the new grid will be smaller than the WRF grid (so you don't interpolate zeros).</font></span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="georgia, serif"><br></font></span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="georgia, serif">Barry</font></span></div>
</div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="m_5059910433624172539m_-1646705454077022472m_3258554146209653172m_-1025363590452988400m_-728593573894645406h5">On Wed, Nov 29, 2017 at 11:16 AM, Ronald Opio <span dir="ltr"><<a href="mailto:opioronald123@gmail.com" target="_blank">opioronald123@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="m_5059910433624172539m_-1646705454077022472m_3258554146209653172m_-1025363590452988400m_-728593573894645406h5"><div dir="ltr">Hello colleagues. <div><br></div><div>I am trying to regrid my WRF output file so as to match the gpm rainfall data set grid, however the script is not working.</div><div><br></div><div>I am using ESMF_regrid function. It runs well, however, when I check the file after, I find that the WRF file still remains with its original grid size. </div><div><br></div><div>Please help me out. What could the problem be?</div><div><br></div><div>I have attached the script herein. </div><span class="m_5059910433624172539m_-1646705454077022472m_3258554146209653172m_-1025363590452988400m_-728593573894645406m_8650070002904590694HOEnZb"><font color="#888888"><div><br></div><div><br></div><div><br></div><div>Ronald.</div></font></span></div>
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<br></span></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="m_5059910433624172539m_-1646705454077022472m_3258554146209653172m_-1025363590452988400m_-728593573894645406m_8650070002904590694gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br>US <a href="tel:(914)%20432-3108" value="+19144323108" target="_blank">914 432 3108</a><br></div></div></div>
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</div></div></div></div></blockquote></div><div><div class="m_5059910433624172539m_-1646705454077022472m_3258554146209653172h5"><br><br clear="all"><div><br></div>-- <br><div class="m_5059910433624172539m_-1646705454077022472m_3258554146209653172m_-1025363590452988400gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br>US <a href="tel:(914)%20432-3108" value="+19144323108" target="_blank">914 432 3108</a><br></div></div></div>
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