<div dir="ltr"><div><div>unfortunately I can&#39;t run GrADS correctly. I tried to write a 
descriptor file and used &quot;open&quot; 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-&gt; 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 = &quot;latitude&quot; ;<br>        lat:long_name = &quot;latitude coordinate&quot; ;<br>        lat:units = &quot;degrees_north&quot; ;<br>        lat:bounds = &quot;lat_vertices&quot; ;<br>    float lon(rlat, rlon) ;<br>        lon:standard_name = &quot;longitude&quot; ;<br>        lon:long_name = &quot;longitude coordinate&quot; ;<br>        lon:units = &quot;degrees_east&quot; ;<br>        lon:bounds = &quot;lon_vertices&quot; ;<br>    float pr(time, rlat, rlon) ;<br>        pr:standard_name = &quot;precipitation_flux&quot; ;<br>        pr:long_name = &quot;Precipitation&quot; ;<br>        pr:comment = &quot;at surface; includes both liquid and solid phases from all types of clouds (both large-scale and convective)&quot; ;<br>        pr:units = &quot;kg m-2 s-1&quot; ;<br>        pr:cell_methods = &quot;time: mean&quot; ;<br>        pr:missing_value = 1.e+20f ;<br>        pr:_FillValue = 1.e+20f ;<br>        pr:associated_files = &quot;gridspecFile: gridspec_atmos_fx_CLMcom-CCLM4-8-17_historical_r0i0p0.nc&quot; ;<br>        pr:grid_mapping = &quot;rotated_latitude_longitude&quot; ;<br>        pr:coordinates = &quot;lat lon&quot; ;<br>    double rlat(rlat) ;<br>        rlat:units = &quot;degrees&quot; ;<br>        rlat:axis = &quot;Y&quot; ;<br>        rlat:long_name = &quot;latitude in rotated pole grid&quot; ;<br>        rlat:standard_name = &quot;grid_latitude&quot; ;<br>    double rlon(rlon) ;<br>        rlon:units = &quot;degrees&quot; ;<br>        rlon:axis = &quot;X&quot; ;<br>        rlon:long_name = &quot;longitude in rotated pole grid&quot; ;<br>        rlon:standard_name = &quot;grid_longitude&quot; ;<br>    int rotated_latitude_longitude ;<br>        rotated_latitude_longitude:grid_mapping_name = &quot;rotated_latitude_longitude&quot; ;<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 = &quot;time_bnds&quot; ;<br>        time:units = &quot;days since 1949-12-01T00:00:00Z&quot; ;<br>        time:calendar = &quot;proleptic_gregorian&quot; ;<br>        time:axis = &quot;T&quot; ;<br>        time:long_name = &quot;time&quot; ;<br>        time:standard_name = &quot;time&quot; ;<br><br>// global attributes:<br>        :institution = &quot;Climate Limited-area Modelling Community (CLM-Community)&quot; ;<br>        :institute_id = &quot;CLMcom&quot; ;<br>        :experiment_id = &quot;historical&quot; ;<br>        :source = &quot;CLMcom-CCLM4-8-17&quot; ;<br>        :model_id = &quot;CLMcom-CCLM4-8-17&quot; ;<br>        :contact = &quot;<a href="mailto:cordex-cclm@dkrz.de">cordex-cclm@dkrz.de</a>&quot; ;<br>        :history = &quot;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&quot;,<br>            &quot;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&quot;,<br>            &quot;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.&quot; ;<br>        :comment = &quot;CORDEX Europe RCM CCLM 0.11 deg EUR-11&quot; ;<br>        :references = &quot;<a href="http://www.clm-community.eu/">http://www.clm-community.eu/</a>&quot; ;<br>        :initialization_method = 1 ;<br>        :physics_version = 1 ;<br>        :tracking_id = &quot;dd5f3a1b-646e-484a-b64c-04499e21af42&quot; ;<br>        :title = &quot;CLMcom-CCLM4-8-17 model output prepared for CORDEX historical&quot; ;<br>        :CORDEX_domain = &quot;EUR-11&quot; ;<br>        :driving_experiment = &quot;CNRM-CERFACS-CNRM-CM5, historical, r1i1p1&quot; ;<br>        :driving_model_id = &quot;CNRM-CERFACS-CNRM-CM5&quot; ;<br>        :driving_model_ensemble_member = &quot;r1i1p1&quot; ;<br>        :driving_experiment_name = &quot;historical&quot; ;<br>        :rcm_version_id = &quot;v1&quot; ;<br>        :product = &quot;output&quot; ;<br>        :experiment = &quot;historical&quot; ;<br>        :frequency = &quot;day&quot; ;<br>        :creation_date = &quot;2014-03-24T10:24:23Z&quot; ;<br>        :Conventions = &quot;CF-1.4&quot; ;<br>        :project_id = &quot;CORDEX&quot; ;<br>        :table_id = &quot;Table day (Sept 2013) 0cf1782745489246c9ff07bd6619f558&quot; ;<br>        :modeling_realm = &quot;atmos&quot; ;<br>        :realization = 1 ;<br>        :cmor_version = &quot;2.9.1&quot; ;<br>        :NCO = &quot;4.4.2&quot; ;<br>        :nco_openmp_thread_number = 1 ;<br>}<br><br><div><div><div><div><div class="gmail_signature"><div dir="ltr"><div><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></div>
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