Hi,
This is a known problem with Ferret version 5.8 (& with 5.81 also,
i think). With previous versions of Ferret (like 5, 5.53 & 5.7) there
is no problem like this. I expect that developers will fix this problem
with descriptor files in the next release.
For a detailed discussion about this problem, please have a look at the
following mail and other mails in that chain:
http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2005/msg00818.html
Regards,
Jaison
On Tue, 11 Apr 2006, Sophie Bouffies-Cloche (IPSL) wrote:
Hi,
I have some problem with a description file that contains netcdf
files with packed data (with add_offset and scale_factor). When I run
Ferret individually on each netcdf file, the data are properly
plotted (they are unpacked correctly on the Ferret plot) but when I
use the .des file the plot is not correct and the data are not
unpacked by Ferret.
Why Ferret does not unpack the data when the .des file is used? what
is the possible error?
NB: The variable in the netcdf file contains this kind of attribute:
short data(time, lat, lon) ;
data:units = "1" ;
data:long_name = "Normalized Difference Vegetation
Index" ;
data:valid_range = 0.f, 1.f ;
data:actual_range = 0.008f, 0.9760001f ;
data:missing_value = -999s ;
data:_FillValue = -999s ;
data:scale_factor = 0.001f ;
thank you for your help