I'm trying to visualize a data set I have (in Java, but that doesn't matter much) using gnuplot. I could ask a few different questions about this, but for now: Suppose my data is categorical, and for each category I have quartiles 1,2,3, the min and max, and the total weight of samples in that category (but not the actual sample data). I want to plot this using GNUplot 'candlesticks'. I can almost get this:
except for visualizing the weight of samples using the box width.
Can this be done in a gnuplot 'candlesticks' plot? Some other way?
Note: I'm mostly interested in doing this with gnuplot. Other suggestions are welcome only if they're easily scriptable and do not require installing too much additional software.
Ok, got it.
Sample script:
set terminal pngcairo transparent enhanced font "arial,10" fontscale 1.0 size 500, 350
set output 'candlesticks.png'
set boxwidth 0.2 absolute
set title "Box-and-whisker plot with median bar, whiskerbars, and variable box width"
set xrange[0:5]
set yrange[0:25]
# Data columns: X Min 1stQuartile Median 3rdQuartile Max BoxWidth Titles
# set bars 4.0
set style fill empty
plot 'data.txt' using 1:3:2:6:5:7:xticlabels(8) with candlesticks title 'Quartiles' whiskerbars, \
'' using 1:4:4:4:4:7 with candlesticks lt -1 notitle
Sample Contents of data.txt
:
# Data columns: X Min 1stQuartile Median 3rdQuartile Max BoxWidth Titles
1 5 7 10 15 24 0.3 Quick
2 6 8 11 16 23 0.4 Fox
3 5 7 11 17 22 0.5 Lazy
4 6 9 10 18 21 0.3 Dog
(and note that #
lines are just comments, we don't really specify column names.)
The result:
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