<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">The 'PDEF rotllr’ was designed for the COSMO model, and I’m not certain it is going to work properly in this case, especially since your native grid is only 4x4. I would suggest looking at this data in a more abstract way, without relying on lat/lon coordinates (after you open this file, ’set mproj off’ and just display in X,Y coordinates). Remove the PDEF entry, and change the following<div><br></div><div>xdef 4 linear 1 1</div><div>ydef 4 linear 1 1</div><div>zdef 1 linear 1 1</div><div>vars 3</div><div>lon=>glon 0 y,x grid longitude</div><div>lat=>glat 0 y,x grid latitude</div><div>pr 0 t,y,x precipitation flux</div><div><div>endvars</div><div><br></div><div>—Jennifer<br><div><br><div><div>On Jun 9, 2015, at 9:31 AM, zineb lotfi <<a href="mailto:zineb.lotfi@gmail.com">zineb.lotfi@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div><div>unfortunately I can't run GrADS correctly. I tried to write a
descriptor file and used "open" to work with it. It actually opens
successfully but whenever I try to display the data it gaves me this
error message :<br><span style="background-color:rgb(255,255,255)"><span style="color:rgb(255,0,0)"><br>ga-> d pr<br>Notice: Automatic Grid Interpolation Taking Place<br>Cannot contour grid - all undefined values </span></span><br><br>Can you please give me a solution to try? I put my version of Grads, my descriptor file and the result of ncdump-h below.</div><div><div>I have another question will this interpolation change my data, do I need to take it into consideration when analysing it ?<br></div><br>Thank you so much for your help<br>------------------------------------------------------------------------------------------------------<br></div><div><b>GrADS version</b> : Grid Analysis and Display System (GrADS) Version 2.0.1<br></div><div>------------------------------------------------------------------------------------------------------<br></div><b>DESCRIPTOR FILE</b><br>DSET ^pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_1976-2005.nc<br>DTYPE netcdf<br>TITLE pr_CNRM_CLMcom_hist<br>UNDEF 1.0E20<br>PDEF 4 4 rotllr -162.0 39.25 0.11 0.11 -13.3050003052 -1.925<br>XDEF 16 LEVELS 47.0483 47.0769 47.1054 47.1336 47.1545 47.1832 47.2117 47.2399 47.2606 47.2894 47.3179 47.3462 47.3667 47.3956 47.4242 47.4525 <br>YDEF 16 LEVELS -1.72807 -1.57226 -1.41627 -1.26012 -1.77038 -1.61427 -1.45798 -1.30153 -1.81286 -1.65645 -1.49986 -1.34311 -1.8555 -1.69879 -1.54191 -1.38485<br>ZDEF 0 LEVELS 0<br>TDEF 10958 LINEAR 01JAN1976 1DY<br>VARS 6<br>time 0 t Time<br>rlat 0 x Rotated latitude<br>rlon 0 y Rotated longitude<br>lon 0 x,y longitude<br>lat 0 x,y latitude<br>pr 0 t,x,y precipitation<br>ENDVARS<br>---------------------------------------------------------------------------------------------------------<br></div><b>ncdump -h result</b><br>netcdf pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_1976-2005 {<br>dimensions:<br> rlat = 4 ;<br> rlon = 4 ;<br> time = UNLIMITED ; // (10958 currently)<br>variables:<br> float lat(rlat, rlon) ;<br> lat:standard_name = "latitude" ;<br> lat:long_name = "latitude coordinate" ;<br> lat:units = "degrees_north" ;<br> lat:bounds = "lat_vertices" ;<br> float lon(rlat, rlon) ;<br> lon:standard_name = "longitude" ;<br> lon:long_name = "longitude coordinate" ;<br> lon:units = "degrees_east" ;<br> lon:bounds = "lon_vertices" ;<br> float pr(time, rlat, rlon) ;<br> pr:standard_name = "precipitation_flux" ;<br> pr:long_name = "Precipitation" ;<br> pr:comment = "at surface; includes both liquid and solid phases from all types of clouds (both large-scale and convective)" ;<br> pr:units = "kg m-2 s-1" ;<br> pr:cell_methods = "time: mean" ;<br> pr:missing_value = 1.e+20f ;<br> pr:_FillValue = 1.e+20f ;<br> pr:associated_files = "gridspecFile: gridspec_atmos_fx_CLMcom-CCLM4-8-17_historical_r0i0p0.nc" ;<br> pr:grid_mapping = "rotated_latitude_longitude" ;<br> pr:coordinates = "lat lon" ;<br> double rlat(rlat) ;<br> rlat:units = "degrees" ;<br> rlat:axis = "Y" ;<br> rlat:long_name = "latitude in rotated pole grid" ;<br> rlat:standard_name = "grid_latitude" ;<br> double rlon(rlon) ;<br> rlon:units = "degrees" ;<br> rlon:axis = "X" ;<br> rlon:long_name = "longitude in rotated pole grid" ;<br> rlon:standard_name = "grid_longitude" ;<br> int rotated_latitude_longitude ;<br> rotated_latitude_longitude:grid_mapping_name = "rotated_latitude_longitude" ;<br> rotated_latitude_longitude:grid_north_pole_latitude = 39.25 ;<br> rotated_latitude_longitude:grid_north_pole_longitude = -162. ;<br> rotated_latitude_longitude:north_pole_grid_longitude = 0. ;<br> double time(time) ;<br> time:bounds = "time_bnds" ;<br> time:units = "days since 1949-12-01T00:00:00Z" ;<br> time:calendar = "proleptic_gregorian" ;<br> time:axis = "T" ;<br> time:long_name = "time" ;<br> time:standard_name = "time" ;<br><br>// global attributes:<br> :institution = "Climate Limited-area Modelling Community (CLM-Community)" ;<br> :institute_id = "CLMcom" ;<br> :experiment_id = "historical" ;<br> :source = "CLMcom-CCLM4-8-17" ;<br> :model_id = "CLMcom-CCLM4-8-17" ;<br> :contact = "<a href="mailto:cordex-cclm@dkrz.de">cordex-cclm@dkrz.de</a>" ;<br> :history = "Tue Jun 9 10:55:03 2015: ncrcat <a href="http://pr_eur-11_cnrm-cerfacs-cnrm-cm5_historical_r1i1p1_clmcom-cclm4-8-17_v1_day_19760101-19801231.nc_nantes.nc/">pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19760101-19801231.nc_nantes.nc</a> <a href="http://pr_eur-11_cnrm-cerfacs-cnrm-cm5_historical_r1i1p1_clmcom-cclm4-8-17_v1_day_19810101-19851231.nc_nantes.nc/">pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19810101-19851231.nc_nantes.nc</a> <a href="http://pr_eur-11_cnrm-cerfacs-cnrm-cm5_historical_r1i1p1_clmcom-cclm4-8-17_v1_day_19860101-19901231.nc_nantes.nc/">pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19860101-19901231.nc_nantes.nc</a> <a href="http://pr_eur-11_cnrm-cerfacs-cnrm-cm5_historical_r1i1p1_clmcom-cclm4-8-17_v1_day_19910101-19951231.nc_nantes.nc/">pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19910101-19951231.nc_nantes.nc</a> <a href="http://pr_eur-11_cnrm-cerfacs-cnrm-cm5_historical_r1i1p1_clmcom-cclm4-8-17_v1_day_19960101-20001231.nc_nantes.nc/">pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19960101-20001231.nc_nantes.nc</a> <a href="http://pr_eur-11_cnrm-cerfacs-cnrm-cm5_historical_r1i1p1_clmcom-cclm4-8-17_v1_day_20010101-20051231.nc_nantes.nc/">pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_20010101-20051231.nc_nantes.nc</a> pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_1976-2005.nc\n",<br> "Mon Jun 8 16:46:49 2015: ncks -C -x -v lat_vertices,lon_vertices,time_bnds -d rlat,-1.9250001,-1.595 -d rlon,-13.3050006,-12.9750003814 pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19760101-19801231.nc <a href="http://pr_eur-11_cnrm-cerfacs-cnrm-cm5_historical_r1i1p1_clmcom-cclm4-8-17_v1_day_19760101-19801231.nc_nantes.nc/">pr_EUR-11_CNRM-CERFACS-CNRM-CM5_historical_r1i1p1_CLMcom-CCLM4-8-17_v1_day_19760101-19801231.nc_nantes.nc</a>\n",<br> "Processing for CORDEX archive at DKRZ (SVN revision 4244 <a href="http://svn-mad.zmaw.de/svn/mad/Model/IMDI/tags/cclm/cosmo_090213_4.8_clm17_cordex/util/running">http://svn-mad.zmaw.de/svn/mad/Model/IMDI/tags/cclm/cosmo_090213_4.8_clm17_cordex/util/running</a>) 2014-03-24T10:24:23Z CMOR rewrote data to comply with CF standards and CORDEX requirements." ;<br> :comment = "CORDEX Europe RCM CCLM 0.11 deg EUR-11" ;<br> :references = "<a href="http://www.clm-community.eu/">http://www.clm-community.eu/</a>" ;<br> :initialization_method = 1 ;<br> :physics_version = 1 ;<br> :tracking_id = "dd5f3a1b-646e-484a-b64c-04499e21af42" ;<br> :title = "CLMcom-CCLM4-8-17 model output prepared for CORDEX historical" ;<br> :CORDEX_domain = "EUR-11" ;<br> :driving_experiment = "CNRM-CERFACS-CNRM-CM5, historical, r1i1p1" ;<br> :driving_model_id = "CNRM-CERFACS-CNRM-CM5" ;<br> :driving_model_ensemble_member = "r1i1p1" ;<br> :driving_experiment_name = "historical" ;<br> :rcm_version_id = "v1" ;<br> :product = "output" ;<br> :experiment = "historical" ;<br> :frequency = "day" ;<br> :creation_date = "2014-03-24T10:24:23Z" ;<br> :Conventions = "CF-1.4" ;<br> :project_id = "CORDEX" ;<br> :table_id = "Table day (Sept 2013) 0cf1782745489246c9ff07bd6619f558" ;<br> :modeling_realm = "atmos" ;<br> :realization = 1 ;<br> :cmor_version = "2.9.1" ;<br> :NCO = "4.4.2" ;<br> :nco_openmp_thread_number = 1 ;<br>}<br><br><div><div><div class="gmail_signature"><div dir="ltr"><div dir="ltr"><div style="text-align:left"><b>LOTFI Zineb</b><br>Ecole Centrale de Nantes<br>Master Sciences et Techniques des Environnements Urbains<br><b>Mobile</b>: 07 60 13 09 50<br></div></div></div></div></div>
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<span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px;"><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>--</div><div>Jennifer M. Adams<br>Center for Ocean-Land-Atmosphere Studies (COLA)<br>111 Research Hall, Mail Stop 2B3<br>George Mason University<br>4400 University Drive<br>Fairfax, VA 22030 <br><br></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span></span><br class="Apple-interchange-newline">
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