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[IDV #IFD-863611]: Time-Height Display Question

Greetings Stefan,

The IDV cannot display the time-height plot as a time-pressure plot. I may be 
going out on a limb here, but I think this is why. The user guide shows the 
time-height functionality using wind profiler data, which makes me think that 
this kind of plot was developed to show wind profiler data. If that's true, 
then one would never need the capibility to change units to pressure, as wind 
profilers do not give us pressure. Since it turns out that time-height plots 
are also cool for model output, the functionality was extended to grids. I 
think we would need to add a time-pressure plot to do what you would like to do.

Plotting two variables on a time-height plot isn't possible int he IDV either 
at this point. You could create multiple time height plots, share their data 
probes, and view them side-by-side. The other option would be to plot the 
variables on a data transect (in which you could do a pressure coordinate for 
height) and animate in time).

As for your last question, there isn't any capability in the IDV to smooth out 
probe time series data. However, you could create a jython function to do such 
a thing, like a running time average.

Sorry to be a downer with all of the "can't" responses. That said, let's talk 
next week at the User Comm and see what we can work out. I think there are 
solutions for at least two of your requests.

Cheers!

Sean

> Full Name: Stefan Cecelski
> Email Address: address@hidden
> Organization: University of Maryland
> Package Version: 3.0u1 build date:2011-10-01 07:08 UTC
> Operating System: Mac OS X
> Hardware: Java: home: 
> /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home version: 
> 1.6.0_26 j3d:1.5.2 fcs (build4)
> Description of problem: Hello,
> 
> I have a couple questions about the time-height view under Probe displays. 
> First, is it possible to plot more than one variable on the same time-height 
> display? I see you can change the parameter, but I cannot find how to add an 
> additional parameter. Second, is it possible to have the y-axis as pressure 
> levels rather than alititude (height in meters)? Pressure level are more 
> useful for referencing work and are a standard for meteorological research. 
> Finally, is there anyway to smooth probe data (like a 9-point smooth) instead 
> of just using one exact point? This would be useful to have since when trying 
> to find a circulation center (say, for a tropical cyclone), it might be 
> difficult to locate a point center. Doing some sort of averaging or smoothing 
> allows for some error while trying to locate the center, and will yield the 
> characterisitics of interest to be still captured, even if the circulation 
> center is the exact center.
> 
> Thank you very much in advance!
> 
> V/R,
> 
> Stefan Cecelski
> 
> 


Ticket Details
===================
Ticket ID: IFD-863611
Department: Support IDV
Priority: Normal
Status: Open