McIDAS-V Support Forums

The only thing I can suggest is that when you run this, you set the maximum heap size on the command line. For a 64-bit machine, something like: java - Xmx3000m ...... for 3GB. If you're on a 32-bit machine, you cannot specify a value larger than about 1500m, regardless of how much more memory you m...

Why am I getting an array of 4 values for a lat/lon location? For a given lat/lon coordinate, shouldn't I be getting one corresponding pixel value? ADDE servers always return the number of pixels across a line as a multiple of 4. I cannot tell you why, just that this is the case. The first data val...

I kind of arrived at the same idea. It seems simpler than creating another area file. Btw, how do I grab the data-values at a specific location? The key is to request the data from the server with the desired lat/lon coordinates -- that way your code does not need to do any "navigation" a...

You could pretty easily create a stand-alone Jython script to read and compute the differences on-the-fly using just Jython code and without having to start McIDAS-V ... assuming that for this function, you don't need the selection or display power it provides. The ADDE servers can return a very sma...

There are at least two options that come to mind: 1. in Jython do: makeDataSource("/temp/mydrw.xgrf") (pointing at your file). The side-effect of this is that it will usually pop up the Drawing Control window. 2. make a bundle and then load it when you want to display the "drawing&quo...

I agree about the "altitude" value....good catch! Also, I wanted to mention that the projection should not matter since your values are located by lat/lon coordinates -- you should be able to change the projection (or use the one specified in the GRIB file), and the values will "reloc...

One more note: another way to "annotate" your display would be to use the Drawing Control import/export feature (the file extension is ".xgrf". You can create a text file with information about your annotations / drawings. Refer to the "Drawing Control" section of the U...

There are a couple of possibilities -- first, the "alignment=" might be moving the labels...you might try just removing that. Second, with a proportionally-spaced font, sometimes the computation of the width of the text can produce an issue like that...you might specify a fixed-width font ...

Hi --

Can you send a copy of your text file, and clarify how you are reading and displaying the data? I ask because there are at least two different ways to do this.

Two possibilities come to mind:You can explore "aggregation" of the netcdf files: http://www.unidata.ucar.edu/software/thredds/current/netcdf-java/ncml/Aggregation.html Check out "Exercise 4"... you can create an NCML file (a kind of XML file) that tells the netcdf library to log...