Re: [udf-dlm-develop] dlm v24 and v25

[Harald F. <hf...@ap...>]

I see two things which might cause the problems with reading over the end of 
files, if the time span is given for a longer time. And I'm not sure what 
Evelyn's code looks like.

1. If your IDL code contains something like this

WHILE NOT udf_eof(fh) DO BEGIN
.
.
ENDWHILE
  
you can not expect to get more than the content of the UDF file with the first 
correct time.

2. If your IDL code contains something like

REPEAT BEGIN
.
.
ENDREP UNTIL (whatever EQ something)

then the whole process crashes at udf.c line 1356 with the following message

% UDF_READ: failed to fill_data: @ sensor 0

At the moment I don't see how udf_read can recognize that it has to close the 
existing UDF file and which other file to open in order to get the next times 
right. 

You are able to fix this in the IDL program if you check the etime of the 
present record against your end_time, and if you have reached the udf_eof(fh) 
you close it, and advance to the next UDF-file.

I don't think that the problem is in UDF_EOF. Am I wrong?

Harald

=========================================================
Harald U. Frey 
Space Sciences Lab	   phone: 510-643-3323
University of California   fax:   510-643-2624      
Berkeley, CA 94720-7450    email: hf...@ss...