comparison between datasets from different categories

[Paul Hasenohr <phasenohr@xxxxxx>]

Hello All,

In order to group my data sets into categories meaningful to my users, I
followed instructions posted on the LAS FAQ
(http://ferret.wrc.noaa.gov/Ferret/LAS/FAQ/data_categories.html)

So I have two categories and three configuration files, las.xml, las1.xml
and las2.xml

My LAS is working fine with any data set from any category when I select
"single variable" on the LAS main page.

My LAS is still working fine when I ask for a comparison between two
datasets from the same category.

BUT I get an error message when I try to make a comparison between two
datasets from two different categories. I get this error message
:

LAS Error
The following error message was received from LAS: 
Can't find match target
'/lasdata/datasets/Aggregated_MSLA/variables/grid_0001' at
'Aggregated_MSLA' at ../xml/perl/LAS.pm line 828

Unfortunately, my LAS server is not yet publically available.
I had a look to other LAS sites and I found that exactly the same problem
occurs at the AOMIP LAS
(http://hamish.cims.nyu.edu/las/main.pl)

Is it a known problem and is there any work around ?

I use LAS v5.40 and Ferret v5.40

Thank You.
Paul Hasenohr

phasenohr@cls.fr