Re: HDF_SD_ADDDATA problem

Just an update: I ran the original code, line by line from the IDL
command line, but substituted in your two lines

HDF_SD_GetData, thisSdsID, olddata
newdata = olddata+500

instead of how I was creating my new data. And it worked!

I went back to my original program. Here's some stats about the "old"
and "new" data (the second line produced by "help, L1B_emiss, /stru"):

olddata:
Max: 9931, Min: 2969, Mean: 5842.88
L1B_EMISS       UINT      = Array[1354, 2030, 2]

newdata:
Max: 9931, Min: 0, Mean: 718.132
L1B_EMISS       UINT      = Array[1354, 2030, 2]


The dimensionality, size and type of the arrays is identical. No NaNs
are present (otherwise I couldn't have calculated the mean). But
still, I get the "slice" error! Could the HDF interface possibly be
complaining about the presence of zeros in the new data set?!?!

I also tried creating  blank int arrays of the same dimensions. Still
no go.

Any more ideas?! I'm at a loss!

Thanks,
Alex.