I have a netcdf file of an mm5 model output. One variable is max wind
speed, defined over a 2d grid, with values every 3 hours. The nc file
has CF conventions in place so IDV can display it.
I would like to perform two transformations on the data in order to
display it in idv:
1 create a smaller area. the orig grid is say 100x100 and I want to
view just say an inner box of 20x20. I know I can zoom in on the area
but the mere presence of the full grid has influence on the
contouring/display so I would prefer to clip the data first
2 the units from the model are ms-1. i would like to display (and
contour) in knots.
I suspect that the first task cannot be done in IDV. I had hoped that
NcML would provide some filtering leverage like this, but I haven't
found it.
The unit conversion can be done in IDV ??
Any help gratefully appreciated
Stuart Maclean
