Hi again,
I generated
another netCDF file with fewer points (10-minute interval sampling from
the original data) and Ferret properly recognizes the time axis as
irregular:
> ferret
NOAA/PMEL TMAP
FERRET v6.1
Linux(g77) 2.4.21-32 - 03/25/08
26-Aug-08 13:11
yes? use "http://dods.mbari.org/cgi-bin/nph-nc/data/ssdsdata/deployments/mse2006/200609/mse2006_ctd_20061106_original.nc"
yes? show grid GAF1
GRID GAF1
name axis # pts start end
LONGITUDE LONGITUDE 1mr 122.89W(-122.89) 122.89W(-122.89)
LATITUDE LATITUDE 1 r 36.237N 36.237N
NOMINALDEPTH DEPTH (m) 1 r- 3450 3450
ESECS TIME 14760 i 06-NOV-2006 01:00 27-APR-2007 23:50
Ferret thinks that the 2-minute interval
data is regular:
yes? use "http://dods.mbari.org/cgi-bin/nph-nc/data/ssdsdata/deployments/mse2006/200609/mse2006_ctd_20061106_original_120.nc"
yes? show grid GMH1
GRID GMH1
name axis # pts start end
LONGITUDE LONGITUDE 1mr 122.89W(-122.89) 122.89W(-122.89)
LATITUDE LATITUDE 1 r 36.237N 36.237N
NOMINALDEPTH DEPTH (m) 1 r- 3450 3450
ESECS1 TIME 68919 r 06-NOV-2006 01:00 27-APR-2007 23:48
Seems like Ferret is making a decision to
make the time axis regular even though it's not. Should I provide some
help by adding an attribute of 'point_spacing: "uneven"' to the time
axis definition in the netCDF file?
-Mike
Hello,
We just upgraded
to Ferret 6.1 on a Linux host and I'm getting strange results in
plotting an irregular time series.
Here's the plot
with an older version running on my Windows box (plots correctly):
bash-2.05$ ferret
NOAA/PMEL TMAP
FERRET v5.51
cygwin 1.3.x - 02/28/03
26-Aug-08 10:06
yes? use "http://dods.mbari.org/cgi-bin/nph-nc/data/ssdsdata/deployments/mse2006/200609/mse2006_ctd_20061106_original_120.nc"
yes? plot PRESSURE
Here's the plot with the current
release running on my RH Linux (seems to treat the time series as
regular) :
> ferret
NOAA/PMEL TMAP
FERRET v6.1
Linux(g77) 2.4.21-32 - 03/25/08
26-Aug-08 10:07
yes? use "http://dods.mbari.org/cgi-bin/nph-nc/data/ssdsdata/deployments/mse2006/200609/mse2006_ctd_20061106_original_120.nc"
yes? plot PRESSURE
Any help or suggestions are appreciated.
-Mike
--
Mike McCann
Software Engineer
Monterey Bay Aquarium Research Institute
7700 Sandholdt Road
Moss Landing, CA 95039-9644
Voice: 831.775.1769 Fax: 831.775.1736 http://www.mbari.org