[ferret_users] : wrong region when shading a derived variable

[Martin Schmidt <martin.schmidt@xxxxxxxxxxxxxxxxx>]

Hi,
with the latest release of ferret (6.8.2)  I encounter the following error:

use 
"http://phy-51.io-warnemuende.de/thredds/dodsC/genus/joined_ocean_day_zoo31_dmv_ascat.nc";

( a data set aggregated over time with THREDDS, fileformat netcdf4, 
deflation level 3)

shade/t=13-aug-2009:31-dec-2009 
nitrogen_in_flagellates[l=@ave,k=1:20@din,x=8:20]

gives a result, that should be correct. Repeating the command,

shade/t=13-aug-2009:31-dec-2009 
nitrogen_in_flagellates[l=@ave,k=1:20@din,x=8:20]/100

but now with a scaling factor gives another figure, the output region is 
now global in zonal direction.

shade/t=13-aug-2009:31-dec-2009/x=8:20 
nitrogen_in_flagellates[l=@ave,k=1:20@din]/100

gives a correct figure again.

This seems to be a bug.

Greetings,
Martin Schmidt