| Re: 48 variable limit? [message #34979] |
Tue, 06 May 2003 13:39 |
Mark Hadfield
Messages: 783
Registered: May 1995
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Senior Member |
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"Shane Mayor" <shane@ucar.edu> wrote in message
news:4d5b78c4.0305061209.82be99d@posting.google.com...
> I'm very embarassed:...
I hereby declare a contest for most embarassing mistake on
comp.lang.idl-pvwave. First person entries only, and remember: Google News
knows all.
I'll accept this as your entry Shane, but frankly I don't think it's going
to be competitive.
I am biding my time before I submit my entry.
--
Mark Hadfield "Ka puwaha te tai nei, Hoea tatou"
m.hadfield@niwa.co.nz
National Institute for Water and Atmospheric Research (NIWA)
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| Re: 48 variable limit? [message #34983 is a reply to message #34979] |
Tue, 06 May 2003 13:29  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Shane Mayor (shane@ucar.edu) writes:
> I'm very embarassed: there is no limit.
> There really are only 48 columns in the file
> when I had totally convinced myself there were 50.
> I'm clearly getting senile. Thanks for your
> suggestions and my apologies for bothering you all.
Oh, goodness. If we all start apologizing for all the
idiotic things we've said on this newsgroup there will
be no end of it.
Cheers,
David
P.S. Let's just say *I* have no intention of going next. :-(
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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| Re: 48 variable limit? [message #34987 is a reply to message #34983] |
Tue, 06 May 2003 13:09 |
shane
Messages: 3
Registered: June 1998
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Junior Member |
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I'm very embarassed: there is no limit.
There really are only 48 columns in the file
when I had totally convinced myself there were 50.
I'm clearly getting senile. Thanks for your
suggestions and my apologies for bothering you all.
Shane
David Fanning <david@dfanning.com> wrote in message news:<MPG.192073907dc93057989b81@news.frii.com>...
> Shane Mayor (shane@ucar.edu) writes:
>
>> 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?
>
> Uh, I don't think so. I'd look elsewhere for the problem. :-)
>
> Cheers,
>
> David
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| 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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| Re: 48 variable limit? [message #35007 is a reply to message #35000] |
Mon, 05 May 2003 13:38 |
Liam E. Gumley
Messages: 378
Registered: January 2000
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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...
> 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?
Shane,
Are you reading the data line-by-line like this?
readf, lun, a01, a02, a03, a04, a05, ..., a48
If so, then it's possible you could run into a limit.
Why not try
data = fltarr(50, 6600)
readf, lun, data
Cheers,
Liam.
Practical IDL Programming
http://www.gumley.com/
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| Re: 48 variable limit? [message #35008 is a reply to message #35007] |
Mon, 05 May 2003 13:12 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Shane Mayor (shane@ucar.edu) writes:
> 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?
Uh, I don't think so. I'd look elsewhere for the problem. :-)
Cheers,
David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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