<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div></div><div><br><div><blockquote type="cite"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-style: solid; border-left-color: rgb(204, 204, 204); padding-left: 1ex; position: static; z-index: auto;"><div style="word-wrap:break-word"><div><br></div><div>2) Over small islands, the interpolation method also produced some effects (see large yellow areas on the ocean in figure isccp_19V.00001.png). Again I do not need the ocean around the island, just the results over (small) islands.</div></div></blockquote><div><br></div><div><div class="gmail_default" style="font-size:small;display:inline">This is simply an artifact of having a few values surrounded by a lot of missing values. In order to plot data like this correctly, you need to have some kind of cell boundary or grid corner information, so the interpolation stays within these bounds.</div></div><div><div class="gmail_default" style="font-size:small;display:inline"><br></div></div><div><div class="gmail_default" style="font-size:small;display:inline">If you look at our NCL examples for geodesic and MPAS grids, they set these two special resources:</div></div><div><div class="gmail_default" style="font-size:small;display:inline"><font face="monospace, monospace"> res@sfXCellBounds = cx<br> res@sfYCellBounds = cy</font></div></div><div class="gmail_default" style="font-size:small">which were read off a file, and are usually dimensioned something like N x 4 or N x 3 where N is the number of cell centers, and the 3 or 4 represents the number of vertices of a polygon that surrounds each cell center.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">You can see the NCL code for these examples at:</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default"><a href="http://www.ncl.ucar.edu/Applications/geodesic.shtml">http://www.ncl.ucar.edu/Applications/geodesic.shtml</a><br></div><div class="gmail_default"><a href="http://www.ncl.ucar.edu/Applications/mpas.shtml">http://www.ncl.ucar.edu/Applications/mpas.shtml</a> (see example mpas_cell_3.ncl)</div></div></div></div></blockquote><br></div></div><div><br></div></body></html>