<div dir="ltr"><div dir="ltr"><div dir="ltr">Dear NCL experts,<div><br></div><div>i'm trying to plot bar charts for a variable 4 dimension for 28 subareas, and for each subarea i have 3 depths (3 ncfiles).</div><div>i had this error:</div><div> fatal:Assignment type mismatch, right hand side can't be coerced to type of left hand side</div><div>fatal:["Execute.c":8575]:Execute: Error occurred at or near line 587 in file dox_gsa.ncl</div><div>i'm not sure if i did well the loop, Could you help me to correct it please?</div><div><div>here is the variable and the script in attachement</div><div><br></div><div>many thanks</div><div>amal</div><div>netcdf dox01_med_0-52_timemean {</div><div>dimensions:</div><div><span style="white-space:pre">        </span>lon = 670 ;</div><div><span style="white-space:pre">   </span>lat = 253 ;</div><div><span style="white-space:pre">   </span>lev = 13 ;</div><div><span style="white-space:pre">    </span>time = UNLIMITED ; // (1 currently)</div><div><span style="white-space:pre">   </span>bnds = 2 ;</div><div>variables:</div><div><span style="white-space:pre">   </span>float lon(lon) ;</div><div><span style="white-space:pre">              </span>lon:standard_name = "longitude" ;</div><div><span style="white-space:pre">           </span>lon:long_name = "longitude" ;</div><div><span style="white-space:pre">               </span>lon:units = "degrees_east" ;</div><div><span style="white-space:pre">                </span>lon:axis = "X" ;</div><div><span style="white-space:pre">    </span>float lat(lat) ;</div><div><span style="white-space:pre">              </span>lat:standard_name = "latitude" ;</div><div><span style="white-space:pre">            </span>lat:long_name = "latitude" ;</div><div><span style="white-space:pre">                </span>lat:units = "degrees_north" ;</div><div><span style="white-space:pre">               </span>lat:axis = "Y" ;</div><div><span style="white-space:pre">    </span>float lev(lev) ;</div><div><span style="white-space:pre">              </span>lev:standard_name = "depth" ;</div><div><span style="white-space:pre">               </span>lev:long_name = "depth" ;</div><div><span style="white-space:pre">           </span>lev:units = "m" ;</div><div><span style="white-space:pre">           </span>lev:positive = "down" ;</div><div><span style="white-space:pre">             </span>lev:axis = "Z" ;</div><div><span style="white-space:pre">            </span>lev:_CoordinateZisPositive = "down" ;</div><div><span style="white-space:pre">               </span>lev:_CoordinateAxisType = "Height" ;</div><div><span style="white-space:pre">        </span>double time(time) ;</div><div><span style="white-space:pre">           </span>time:standard_name = "time" ;</div><div><span style="white-space:pre">               </span>time:long_name = "time" ;</div><div><span style="white-space:pre">           </span>time:bounds = "time_bnds" ;</div><div><span style="white-space:pre">         </span>time:units = "seconds since 1970-01-01 00:00:00" ;</div><div><span style="white-space:pre">          </span>time:calendar = "standard" ;</div><div><span style="white-space:pre">                </span>time:axis = "T" ;</div><div><span style="white-space:pre">   </span>double time_bnds(time, bnds) ;</div><div><span style="white-space:pre">        </span>float dox(time, lev, lat, lon) ;</div><div><span style="white-space:pre">              </span>dox:standard_name = "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water" ;</div><div><span style="white-space:pre">               </span>dox:long_name = "Mole concentration of Dissolved Molecular Oxygen in sea water" ;</div><div><span style="white-space:pre">           </span>dox:units = "millimol m-3" ;</div><div><span style="white-space:pre">                </span>dox:_FillValue = 1.e+20f ;</div><div><span style="white-space:pre">            </span>dox:missing_value = 1.e+20f ;</div><div><span style="white-space:pre">         </span>dox:_ChunkSizes = 1, 22, 84, 161 ;</div><div><br></div><div>// global attributes:</div><div><span style="white-space:pre">               </span>:CDI = "Climate Data Interface version 1.9.0 (<a href="http://mpimet.mpg.de/cdi">http://mpimet.mpg.de/cdi</a>)" ;</div><div><span style="white-space:pre">             </span>:Conventions = "None" ;</div><div><span style="white-space:pre">             </span>:history = "Thu Dec 20 13:29:55 2018: cdo timmean <a href="http://dox01_med_0-52.nc">dox01_med_0-52.nc</a> <a href="http://dox01_med_0-52_timemean.nc">dox01_med_0-52_timemean.nc</a>" ;</div><div><span style="white-space:pre">                </span>:creation_date = "Tue Dec  4 23:27:50 CET 2018" ;</div><div><span style="white-space:pre">          </span>:source_file = "<a href="http://dox_med_0-52.nc">dox_med_0-52.nc</a>" ;</div><div><span style="white-space:pre">               </span>:title = "NCL Efficient Approach to netCDF Creation" ;</div><div><span style="white-space:pre">              </span>:CDO = "Climate Data Operators version 1.9.0 (<a href="http://mpimet.mpg.de/cdo">http://mpimet.mpg.de/cdo</a>)" ;</div></div><div><br></div></div></div></div>