Re: [Gnuplot-info] re ad a datafile into an array, is it possible?

[Thomas S. <t.s...@fz...>]

try this:

set macro
set term dumb
vs=""
ws=""
plot 'aaa.txt' using ( \
   vs=vs.'; v'.stringcolumn(1).'='.stringcolumn(1), \
   ws=ws.'; w'.stringcolumn(1).'='.stringcolumn(2), \
   $1):2
print "vs: |".vs."|"
print "ws: |".ws."|"
@vs
@ws
show var


bsmile wrote:
> 
> Dear All,
> 
> I just asked something about mathematical operation, and Thomas gave me
> very
> useful hint. So let me ask something more advanced in my point of view. Is
> it possible to define an array in gnuplot, and read each row of a file
> into
> the array, for example,
> 
> 1  0.56
> 2  0.45
> 3  0.56
> 4  0.65
> 
> ?
> 
>>From what I know, I would think of the following
> 
> p 'aaa.txt' u ( 'v'.$1=$1, 'w'.$1=$1 ):2
> 
> and it seems that
> 
> v1=1, w1=0.56
> v2=2, w2=0.45
> ...
> 
> But if I run the code, it fails, complaining that ')' expected
> 
> Any suggestions?
> 
> Thanks,
> 
> Sincerely,
> Jon
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