Re: track plots

Christine

The correct syntax for what you want to do is:

ff = addfile(<lat file name>,"r")
lat = ff->lat (or name of field in netcdf file)
ff = addfile(<lon file name>,"r")
lon = ff->lon (or name of field in netcdf file)

You need to open the files first, then read from them.
Hope this helps,

Andrea

Andrea Hahmann, PhD.
Senior Scientist
Phone direct +45 4677 5471
andrea.n.hahmann_at_risoe.dk
 
Wind Energy Department
Risø National Laboratory for Sustainable Energy
Technical University of Denmark
Building 118, P.O. Box 49
DK-4000 Roskilde, Denmark
Tel +45 4677 4677
Fax +45 4677 5083

-----Original Message-----
From: ncl-talk-bounces_at_ucar.edu [mailto:ncl-talk-bounces_at_ucar.edu] On Behalf Of Christine.Radermacher_at_gfi.uib.no
Sent: Wednesday, April 22, 2009 4:05 PM
To: ncl-talk_at_ucar.edu
Subject: track plots

Hello,

I would like to plot storm tracks with ncl.
The tracks are stored in NetCDF and the latitude and longitude
variables both have the form

1: lat1 lat2 lat3 missing missing ......
2: lat1 lat2 lat3 lat4 missing missing .....
.
.
.

so that each track is filled with missing values to a certain length.

I tried to modify the traj_1.ncl script for that problem and modified
the beginning like that:

;*************************************************
; traj_1.ncl
;*************************************************
load "/usr/share/ncarg/nclscripts/csm/gsn_code.ncl"
load "/usr/share/ncarg/nclscripts/csm/gsn_csm.ncl"
;**************************************************
begin
;*************************************
; read in data
;************************************

       lat = addfile("$PATH/TRACK_lat_200704.nc","r")
       lon = addfile("$PATH/TRACK_lon_200704.nc","r")
        ntime=105

Then I get the following error:
warning:TextItem:libncarg Error:PLCHHQ - DATASET NOT LOADED CORRECTLY
Segmentation fault

I hope you could help me.

Regards
Christine

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Received on Wed Apr 22 2009 - 12:29:48 MDT