<html><head></head><body><div class="ydp3761323ayahoo-style-wrap" style="font-family: verdana, helvetica, sans-serif; font-size: 13px;"><div>Dear NCL community,</div><div><br></div><div>I have a global dataset with monthly temporal resolution on unstructured grid. </div><div><br></div><div>Part of the ncdump is as follows-</div><div><br></div><div><span><div><i>dimensions:</i></div><div><i><span style="white-space: pre-wrap;"> </span>ncol = 48602 ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>time = UNLIMITED ; // (1 currently)</i></div><div><i><span style="white-space: pre-wrap;"> </span>nbnd = 2 ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>chars = 8 ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lev = 30 ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>ilev = 31 ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>psubcols = 4 ;</i></div><div><i>variables:</i></div><div><i><span style="white-space: pre-wrap;"> </span>double lat(ncol) ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lat:long_name = "latitude" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lat:units = "degrees_north" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>double lon(ncol) ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lon:long_name = "longitude" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lon:units = "degrees_east" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>double area(ncol) ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>area:long_name = "gll grid areas" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>double lev(lev) ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lev:long_name = "hybrid level at midpoints (1000*(A+B))" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lev:units = "hPa" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lev:positive = "down" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lev:standard_name = "atmosphere_hybrid_sigma_pressure_coordinate" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>lev:formula_terms = "a: hyam b: hybm p0: P0 ps: PS" ;</i></div><div><span><div><i> float PRECC(time, ncol) ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>PRECC:units = "m/s" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>PRECC:long_name = "Convective precipitation rate (liq + ice)" ;</i></div><div><i><span style="white-space: pre-wrap;"> </span>PRECC:cell_methods = "time: mean" ;</i></div><div><br></div><div>I am able to plot the above variable (PRECC) globally using sfXArray and sfYArray but how to subset the data for a smaller area for plotting or further processing?</div><div><br></div><div>I could find information for 2D lat and lon type of grid in NCL but could not find information for such 1D lat/lon type of grid. Please help.</div><div><br></div><div>Thanking in anticipation.</div></span><br></div></span><br></div><div>Yours sincerely,<br></div><div class="ydp3761323asignature"><div style="">Snehlata Tirkey</div><div style="">e-mail:snehlata_tirkey@yahoo.com</div><div><br></div></div></div></body></html>