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array.FIELD reading ascii file - ERROR message??? [message #60209]

Mon, 05 May 2008 04:42

matthias.demuzere
Messages: 32
Registered: January 2006

Member

Hi All,

Like always, I read in my ascii (.txt) files as follows:

input = file.txt'
res = read_ascii(input,
DELIMITER=' ',DATA_START=1,MISSING_VALUE=-9999)

This is working when checking with the print, res statement.

Now, I always extract columns from this file, while using the
following statement
year = reform(res.field01(0,*)) or year = reform(res.field(0,*))

As I am not completely sure how this FIELD statement is working, I was
hoping on some help? Because in this case, I get the following ERROR
message:

% Tag name FIELD01 is undefined for structure <Anonymous>.

And I have no idea why? Normally, if I have this message, I change
from field 01 to field, and than it works. This time, it doesn't.

Could anybody help me with this?
Thanks,

Regards,
Matthias

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