Re: [Gnuplot-info] special plot need -- splot matrix from not-that-regularly organized data file

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

turn all non-data lines into comments by adding a '#' in front
and plot with

splot 'file' matrix ind 0 w l, '' matrix ind 1 w l, ...


otherwise, you need gnuplot 4.3-cvs.
the first plot goes into a table:

set table
set out 'table'
splot 'file' every 2:1:1:1:3:1, '' every 2:1:5:1:8:1, ...
set out

see 'help every', the 1st block ('d channel') in your
data file is empty, the 2nd contains the data from 'k=1'
to 'k=whatever', the 3rd ('m channel') is empty, the
4th contains data, that's why we take every 2nd
block.
inside one block data lines are selected from 1 to 3,
5 to 8, a.s.o.

and this table is then read in again:

set xrange [0:2]
splot 'table' matrix ind 0, '' matrix ind 1, ...

the warnings are due to the 'i' at the end of each data line
in 'table'.


bsmile wrote:
> 
> I have a data file organized as the following
> 
> d channel ...
> 
> k = 1
> 0.34  0.89   0.99
> 0.23  0.67  0.02
> 0.65  0.99  0.45
> k=2
> 0.45  0.78  0.99
> 0.23  0.78  0.86
> 0.12  0.43  0.23
> ...
> 
> m channel ...
> 
> k=1
> ...
> 
> I need to skip the first 3 lines then splot the first set of data forming
> 3
> by 3 matrix, and then skip a line, splot the second set of data forming 3
> by
> 3 matrix again ... How can I do that?
> 
> If I use splot 'file' ev 4:6 matrix , then it complains that
> Matrix does not represent a grid,
> 
> Can anybody explain where the above command goes wrong?
> 
> Thank you very much!!
> 
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