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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hey Jim- > FYI that "ADD" is not recognized either: > > Traceback (innermost last): > File "<string>", line 1, in ? > NameError: ADD Sorry, it's case sensitive. It should be add, not ADD Do you want all layers in the model between 850-500, or just specific layers? If they are contiguous layers, then you could create a jython procedure that is: def lavg(grid): return GridMath.applyFunctionOverLevels(grid, GridMath.FUNC_AVERAGE) and then in formulas, select Grids->Define a grid diagnostic and type in lavg(grid). When you are prompted for the grid, you can select a range of levels in the field selector (click on the first level and then shift click on the upper level). For some reason, you can't just create a formula, you have to create the Jython function first. I'll look into that and adding lavg as a system function on Monday. If they are non-contiguous layers (e.g. 850,700,500), then you would have to do the add instead. > I can't wait until we can just say "Computer, plot the mean RH in > the 850-500 mb layer in panel 2." Captain Kirk can do that. I think you'll have to wait for the voice activated commands a little longer. Captain Kirk didn't live until the 23rd century. ;-) Don > Unidata IDV Support wrote: > > Jim- > > > > Please send these to support-idv (and include the python error). dmurray > > won't work much longer. ;-) > > > > > >> For the life of me I can't get IDV formulas to work. I get a python > >> error every time. Here I'm just trying to average 3 variables. Why > >> won't this work? If this isn't enough info, let me know. > >> > > > > I assume you are using slices at different levels and getting an error > > about manifold dimension or some such thing. The problem is that the > > resampling from one level to another is going to fail. Although we tout > > the compatibility of Jython and VisAD, in reality if you are trying to do > > simple math functions (+,-,/,*) on different types of grids, you are better > > off using the GEMPAK syntax: > > > > ADD(ADD(A,B),C)/3 > > > > I need to make functions like: > > > > AVG(A,B,C,...) > > > > These functions will remove the extra dimension which is causing you > > problems with the simple +, etc functions. > > > > I'll look into this more tomorrow. > > > > Don > > > > Ticket Details > > =================== > > Ticket ID: ARV-969650 > > Department: Support IDV > > Priority: Normal > > Status: Open > > > > > > Ticket Details =================== Ticket ID: ARV-969650 Department: Support IDV Priority: Normal Status: Open