<div dir="ltr"><div class="gmail_default" style="font-size:small">Vandhna,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Your plot looks correct to me. You asked for a dot at </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><div style="font-family:arial,sans-serif;font-size:12.8000001907349px"> lon1 = 177.26</div><div style="font-family:arial,sans-serif;font-size:12.8000001907349px"> lat1 = -17.45</div><div style="font-family:arial,sans-serif;font-size:12.8000001907349px"><br></div><div style="font-family:arial,sans-serif;font-size:12.8000001907349px">and that's what you got. Remember that decimal degrees, which is what you are specifying, are different than degrees minutes seconds type of degrees. The above two lines translate to roughly 177 15' and 17 27'', which is what you are seeing.</div><div style="font-family:arial,sans-serif;font-size:12.8000001907349px"><br></div><div style="font-family:arial,sans-serif;font-size:12.8000001907349px">--Mary</div><div style="font-family:arial,sans-serif;font-size:12.8000001907349px"><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Oct 15, 2014 at 4:16 PM, Vandhna Nair <span dir="ltr"><<a href="mailto:n.vandhna@gmail.com" target="_blank">n.vandhna@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hi,</div><div><br></div><div>I have used gsn-coordinates to successfully draw a lon/lat grid over an island. </div><div><br></div><div>However, when I am trying to mark a station location using gsn_polymarker, the marker is placed elsewhere. I get the same result using gsn_add_polymarker. There is no error message, script runs well - it's just that the resultant image is not what I was trying to get. </div><div>Could you please let me know why this is happening, and how the problem can be fixed?</div><div><br></div><div>My script is copied below, and the resultant image (plus data file) are attached. </div><div><br></div><div>(NCL 6.1.0 on Ubuntu 12.0.4)</div><div><br></div><div>;--------------------------------------------------</div><div>; mapgrid_CCAM.ncl</div><div>;--------------------------------------------------</div><div>load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl" </div><div>load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl" </div><div><br></div><div>begin</div><div><br></div><div> inFile="pr_Fiji_1980.nc" ; Read netCDF file</div><div> </div><div> a = addfile(inFile,"r")</div><div> prc = a->rnd(0,:,:) </div><div> </div><div> lat = a->lat</div><div> lon = a->lon</div><div> </div><div> lon1 = 177.26</div><div> lat1 = -17.45</div><div> </div><div>;---Start the graphics.</div><div> wks = gsn_open_wks("eps","Fijigrid") ; open an eps file</div><div><br></div><div> res = True ; plot mods desired</div><div><br></div><div> res@gsnDraw = False ; don't draw yet</div><div> res@gsnFrame = False ; don't advance frame</div><div> res@tiMainString = "CCAM 8 km grid" ; Title</div><div> </div><div> res@mpMinLonF = 177.1 ; set maximum and minimum lon lat values </div><div> res@mpMaxLonF = 178.9</div><div> res@mpMinLatF = -18.4</div><div> res@mpMaxLatF = -17.10</div><div> </div><div> mres = True ; set marker resources</div><div> mres@gsMarkerIndex = 16</div><div> mres@gsMarkerColor = "red"</div><div><br></div><div> res@pmTickMarkDisplayMode = "Always" ;add tickmark labels</div><div><br></div><div>;---Create map (don't draw it yet)</div><div> map = gsn_csm_map_ce(wks,res)</div><div><br></div><div>;---Add marker</div><div> gsn_polymarker(wks,map,lon1,lat1,mres)</div><div><br></div><div>;---Call function to attach lat/lon lines.</div><div> </div><div> pres = True</div><div> pres@gsnCoordsAsLines = True ; Default is points</div><div> gsn_coordinates(wks,map,prc,pres)</div><div> </div><div>end</div><div><br></div><div><br></div><div>Thanks,</div><div>Vandhna K.</div><div><br></div></div>
<br>_______________________________________________<br>
ncl-talk mailing list<br>
List instructions, subscriber options, unsubscribe:<br>
<a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" target="_blank">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a><br>
<br></blockquote></div><br></div>