| Re: 48 variable limit? [message #35000 is a reply to message #34987] |
Tue, 06 May 2003 07:39   |
R.G. Stockwell
Messages: 363
Registered: July 1999
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Senior Member |
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"Shane Mayor" <shane@ucar.edu> wrote in message
news:4d5b78c4.0305051207.34690816@posting.google.com...
> Hi,
> I've been given an ASCII file of numbers 50 columns wide
> by 6600 rows long, blank-space separated values.
> I've tried both read_ascii and readf, reads and have concluded
> that these routines can only read up to 48 variables in a row.
> Can anybody confirm this and/or suggest alternatives?
> Thanks much,
> Shane Mayor
> NCAR
> Boulder, CO
Hi Shane,
As a wild guess as to why it doesn't work, are there some columns that
are not seperated by a space (like a -9999 used for a bad data file, in a
column only 4 digits wide)?
I did a quicky test, and it works fine.
Here is the idl code:
filename = 'C:\junktest.txt'
d = read_ascii(filename)
help,d
end
Here is the txt file (54 columns, 3 rows)
1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2
3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2
3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2
3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9
And here is the command log
IDL> .GO
% Compiled module: UNIQ.
D STRUCT = -> <Anonymous> Array[1]
IDL> help,d,/st
** Structure <17039a8>, 1 tags, length=648, data length=648, refs=1:
FIELD01 FLOAT Array[54, 3]
IDL> print,d.field01
1.00000 2.00000 3.00000 4.00000 5.00000 6.00000 7.00000 8.00000 9.00000
1.00000 2.00000 3.00000 4.00000 5.00000 6.00000
7.00000 8.00000 9.00000 1.00000 2.00000 3.00000 4.00000 5.00000 6.00000
7.00000 8.00000 9.00000 1.00000 2.00000 3.00000
4.00000 5.00000 6.00000 7.00000 8.00000 9.00000 1.00000 2.00000 3.00000
4.00000 5.00000 6.00000 7.00000 8.00000 9.00000
1.00000 2.00000 3.00000 4.00000 5.00000 6.00000 7.00000 8.00000 9.00000
1.00000 2.00000 3.00000 4.00000 5.00000 6.00000 7.00000 8.00000 9.00000
1.00000 2.00000 3.00000 4.00000 5.00000 6.00000
7.00000 8.00000 9.00000 1.00000 2.00000 3.00000 4.00000 5.00000 6.00000
7.00000 8.00000 9.00000 1.00000 2.00000 3.00000
4.00000 5.00000 6.00000 7.00000 8.00000 9.00000 1.00000 2.00000 3.00000
4.00000 5.00000 6.00000 7.00000 8.00000 9.00000
1.00000 2.00000 3.00000 4.00000 5.00000 6.00000 7.00000 8.00000 9.00000
1.00000 2.00000 3.00000 4.00000 5.00000 6.00000 7.00000 8.00000 9.00000
1.00000 2.00000 3.00000 4.00000 5.00000 6.00000
7.00000 8.00000 9.00000 1.00000 2.00000 3.00000 4.00000 5.00000 6.00000
7.00000 8.00000 9.00000 1.00000 2.00000 3.00000
4.00000 5.00000 6.00000 7.00000 8.00000 9.00000 1.00000 2.00000 3.00000
4.00000 5.00000 6.00000 7.00000 8.00000 9.00000
1.00000 2.00000 3.00000 4.00000 5.00000 6.00000 7.00000 8.00000 9.00000
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