Hi Heiko-
Heiko Klein wrote:
I'm trying to open 3D+t data with the following dimension:
float i(i) ;
i:coord_axis = "x" ;
i:long_name = "EMEP grid x coordinate" ;
i:units = "km" ;
float j(j) ;
j:coord_axis = "y" ;
j:long_name = "EMEP grid y coordinate" ;
j:units = "km" ;
float k(k) ;
k:coord_alias = "level" ;
k:long_name = "vertical eta coordinates" ;
k:units = "eta_level" ;
k:positive = "down" ;
int time(time) ;
time:long_name = "time at middle of period" ;
time:units = "seconds since 1970-1-1 00:00:00.0 +00:00" ;
I'm assuming that you also have lat(j,i) and lon(j,i) in the file
or some sort of projection specification?
When trying to open this data, I get a error:
ControlDescriptor.Creating display
Real: Unit "null" must be convertable with Type default Unit "m"
The units of k (eta_level) is not a valid unit specification.
Try using "". Also, which version of the IDV are you using?
I would like to see the different levels, either by entering the
forumular to calculate the actual height via the pressure, or by just
numbering the levels from 1-20. What would be the best way?
Starting with version 2.0, the IDV should handle unknown
vertical coordinates by scaling the values to altitude.
So, if you have values of k from 1-20, it will scale them
to 1-20 m. You can use the vertical scale widget in the
display to set the vertical range of the box to be 1-20 m
and you will see the levels displayed at their appropriate
positions in the vertical.
If setting the vertical unit doesn't fix the problem, could
you send a sample file to support-idv@xxxxxxxxxxxxxxxx?
Don
*************************************************************
Don Murray UCAR Unidata Program
dmurray@xxxxxxxxxxxxxxxx P.O. Box 3000
(303) 497-8628 Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
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