Re: [Gnuplot-info] Series labels from data file?

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

in gnuplot 4.5-cvs (or the coming version 4.4) you
may use the following script:

reset
set xdata time
set timefmt "%Y-%m"
set format x "%m/%Y"
# dummy plot to collect the data set names (plots nothing)
laststring = ""
datasetnames = ""
set table
plot 'datafile' us 1:(stringcolumn(2) eq laststring \
   ? 0 \
   : (laststring = stringcolumn(2) , \
      datasetnames = datasetnames . " " . laststring , \
      0))
unset table
# and now the real plot
plot for [i in datasetnames] 'datafile' \
   using 1:(stringcolumn(2) eq i ? $4 : 0/0) \
   title i with linespoints


Steve Cohen wrote:
> 
> Given the following dataset
> 
> 2009-04    OFF    67935    248967.45    0
> 2009-05    OFF    35693    131338.02    0
> 2009-06    OFF    118    599.07    0
> 2009-10    OFF    1    0.63    0
> 
> 
> 2009-04    NEW    1627    5566.72    1
> 2009-05    NEW    737    4996.18    1
> 2009-06    NEW    414    1902.48    1
> 2009-07    NEW    79    232.22    1
> 2009-08    NEW    119    248.03    1
> 2009-09    NEW    122    190.87    1
> 2009-10    NEW    97    67.92    1
> 
> 
> 2009-05    VERIFIED    1061    6909.02    10
> 2009-06    VERIFIED    3690    27681.30    10
> 2009-07    VERIFIED    1842    13867.37    10
> 2009-08    VERIFIED    1894    13529.98    10
> 2009-09    VERIFIED    1433    10401.02    10
> 2009-10    VERIFIED    1916    10619.17    10
> 
> 
> 2009-06    CERTIFIED    17    185.33    11
> 2009-07    CERTIFIED    163    1067.47    11
> 2009-08    CERTIFIED    127    1037.75    11
> 2009-09    CERTIFIED    118    1148.42    11
> 2009-10    CERTIFIED    532    2301.32    11
> 
> I'd like to get the series titles from Column 2.  Also, the double line 
> feeds between series were added manually.  It would be nice if I didn't 
> have to do that and could trigger a new series based on the contents of 
> column 2.  Are either of these things possible.
> 
> Since I can't do either of these I am doing instead
> 
> set xdata time
> set timefmt "%Y-%m"
> set format x "%m/%Y"
> plot "datafile" index 0 u 1:4 t "OFF" with linespoints, \
> "" index 1 u 1:4 t "NEW" with linespoints, \
> "" index 2 u 1:4 t "VERIFIED" with linespoints,
> "" index 3 u 1:4 t "CERTIFIED" with linespoints
> 
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