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Re: Declaring large vectors in IDL [message #70615 is a reply to message #70537]

Wed, 21 April 2010 12:15

fgg
Messages: 67
Registered: April 2010

Member

> Great! I guess Scope_VarFetch is the function I was looking for. This
> solves my problem:
>
> pro test
> heads=['a', 'b', 'c']
> data = ['1 2 3', '4 5 6', '7 8 9']
> for i=0,2 do (Scope_VarFetch(heads[i], LEVEL=1, /ENTER)) =
> strsplit(data[i],/extract)
> end
>
> Thanks, David.

Ok, now I have "a", "b", and "c" saved to the main IDL level. Assuming
that they don't have the same number of elements, what is the easiest
way to write them out to a *.csv file? Here are other questions
related to this script I'm working on. Any help would be appreciated!

1) How can I summarize these two lines in just one line of code?

if (line[0] eq 'i_rng_wf' and n_elements(line) ne 4002) then message,
'The # of samples per shot is not valid.'
if (line[0] eq 'i_rng_wf' and n_elements(line) ne 10882) then message,
'The # of samples per shot is not valid.'

...I thought using OR would do the trick, but I guess I'm missing
something here:

if (line[0] eq 'i_rng_wf' and n_elements(line) ne (4002 or 10882))
then message, ...

2) When reading a text file like this at once:

=xxx
id = 1
a = 3 3 0
b = 1 0 5
c = 7 9 1
=xxx
id = 2
a = 2 9 1
b = 7 5 4
c = 9 3 7

...using file_lines and a string array:

infile = '/path/filename'
n = file_lines(infile)
data = strarr(n)
openr, inunit, infile, /get_lun
readf, inunit, data

How could I use the "=xxx" lines to break the data into multiple
arrays? Or maybe just ignore the "=xxx" lines and relate, somehow,
each variable (a, b, and c in the example) to a given "id"?

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[Message index]

		Declaring large vectors in IDL By: fgg on Fri, 16 April 2010 18:17
		Re: Declaring large vectors in IDL By: fgg on Tue, 20 April 2010 15:34
		Re: Declaring large vectors in IDL By: fgg on Wed, 21 April 2010 12:15
		Re: Declaring large vectors in IDL By: David Fanning on Tue, 20 April 2010 15:06
		Re: Declaring large vectors in IDL By: fgg on Tue, 20 April 2010 14:46
		Re: Declaring large vectors in IDL By: Gray on Mon, 19 April 2010 18:32
		Re: Declaring large vectors in IDL By: penteado on Mon, 19 April 2010 17:11
		Re: Declaring large vectors in IDL By: wallabadah on Mon, 19 April 2010 15:33

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