Re: [Gnuplot-info] Create non-bar chart with categories on x-axis

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

canavanin <canavanin <at> yahoo.se> writes:

> Hi everyone
> 
> I need to create a graph showing pairs of value. One item from each pair is
> a single value, the other one is supposed to show a range of values (my idea
> was to plot the mean value with error bars to indicate the range's max and
> min, but I'm open to better ideas). The x-axis has no purpose other than
> giving the names of the various categories (just like in a histogram) - all
> that matters are the y-values.
> 
> I am pretty sure I could create something like this (value pairs and
> x-categories) using histograms, but boxes just strike me as wrong in this
> case. 
> 
> Is there a way to create such a graph? If so, could you please point me in
> the right direction? 
> 
> Thanks a lot for your time!
> 
> PS: I have already asked this question on stackoverflow, but I guess it's
> not really the right forum for gnuplot questions. There, however, I have
> also included a rough sketch of my desired graph, and some further details.
> The link is:  http://stackoverflow.com/q/8371993/475845
> http://stackoverflow.com/q/8371993/475845  Thanks again!

you need to plot something out of (y-)range to get the xtics labels
at the right positions.
then you plot a large black point shifted to the left and on top
a slightly smaller colored point.
the same applies to the points which a shifted to the right plus
errorbars with point size '0'.

reset

set xrange [-1:3]
set yrange [0:25]
unset bars
xoffset=0.2

plot "ts.dat" using 0:(-999):xticlabel(1) every 2 notitle, \
"" using ($0-xoffset):2 every 2 \
   with points pointtype 7 pointsize 9 linecolor rgb 'black' notitle, \
"" using ($0-xoffset):2 every 2 \
   with points pointtype 7 pointsize 8 linecolor rgb 'red' notitle, \
"" using ($0+xoffset):2 every 2::1 \
   with points pointtype 7 pointsize 9 linecolor rgb 'black' notitle, \
"" using ($0+xoffset):2 every 2::1 \
   with points pointtype 7 pointsize 8 linecolor rgb 'blue' notitle, \
"" using ($0+xoffset):2:3 every 2::1 \
   with errorbars pointsize 0 linecolor rgb 'black' notitle