Histogram With Error Bars In Gnuplot
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Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: gnuplot boxes Sign up Gnuplot histogram with errorbars (High and Low) up vote 0 down vote favorite I am trying to create a histogram (barchart) with High and Low errors, using gnuplot. I have found this thread Gnuplot barchart histogram with errorbars Unfortunately
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it consists only from X value and X-error (2 vaues). Whats I would like to achieve is X value (average) and error bar consisting of High and Low values (total 3: avg, High and Low). How I can do this using gnuplot? My script is identical to the one mentioned in the Thread, I only changed some labels etc (simple cosmetic changes). My example dataset structure is as follows: WikiVote 10 12 7 gnuplot histogram bar-chart share|improve this question asked Mar 12 '13 histogram gnuplot at 20:30 alien01 5721923 How is that not what you have? It seems to me that the bar is the average and then you have the errorbar for high and low ranges. What am I missing here? Please elaborate. –mgilson Mar 12 '13 at 23:59 The error bar high and low are same distance from Y. As far as I can tell my script takes col2 as avg and then creates both high and low errors based on col3 as a distance from avg. I would like it to use col2 as avg, col3 as high and col4 as low. –alien01 Mar 13 '13 at 0:09 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote accepted If you have a very simple datafile: #y ymin ymax 4 3 8 You can plot this datafile using: set yrange [0:] set style histogram errorbars gap 2 lw 1 plot 'datafile' u 1:2:3 w hist share|improve this answer answered Mar 13 '13 at 0:47 mgilson 153k23250364 add a comment| up vote 0 down vote I have modified the code provided by mgilson, to achieve multiple histograms for a single X value. If anybody needs it here is the code. plot 'stack_2.dat' u 2:3:4:xtic(1) w hist ti "Hadoop" linecolor rgb "#FF0000", '' u 5:6:7:xtic(1) w hist ti "Giraph" lt 1 lc rgb "#00FF00" Here is the pattern #y_0 #min #max #y_1 #min #max Dataset 4 3 8 6 5 9 sha
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Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join gnuplot set style histogram them; it only takes a minute: Sign up Gnuplot Histogram w/ Error Bars up vote 1 down vote favorite I'm trying to make a bar chart /histogram with Gnuplot but I cant seem to get the error bars to http://stackoverflow.com/questions/15371500/gnuplot-histogram-with-errorbars-high-and-low come out. This is my code: set style data errorbars set style histogram errorbars gap 2 lw 1 set style data histograms plot "ctcf.dat" using 2:3:3:xtic(1) and data: #Label Mean Error 168-B 24778.23544 33467.8754 168-S 34067.82997 35542.62473 168-B 22519.51553 30835.37332 168-S 112976.1825 143760.3467 But they come out wrong: What am I doing wrong? graphics gnuplot histogram share|improve this question asked Aug 28 '14 at 14:07 Charon 271221 add a comment| 1 Answer 1 active oldest votes up vote 1 http://stackoverflow.com/questions/25550866/gnuplot-histogram-w-error-bars down vote accepted When plotting histograms with errorbars you need to give only two columns in the using statement. The first column gives the box height, the second one is ±
by the various errorbar styles. In the default situation, gnuplot expects to see three, four, or six numbers on each line http://gnuplot.sourceforge.net/docs_4.2/node140.html of the data file -- either (x, y, ydelta), (x, y, ylow, yhigh), (x, y, xdelta), (x, y, xlow, xhigh), (x, y, xdelta, ydelta), or (x, y, xlow, http://www.csse.uwa.edu.au/programming/gnuplot_demos/errorbar/errorbar.html xhigh, ylow, yhigh). The x coordinate must be specified. The order of the numbers must be exactly as given above, though the using qualifier can manipulate the order and error bar provide values for missing columns. For example, plot 'file' with errorbars plot 'file' using 1:2:(sqrt($1)) with xerrorbars plot 'file' using 1:2:($1-$3):($1+$3):4:5 with xyerrorbars The last example is for a file containing an unsupported combination of relative x and absolute y errors. The using entry generates absolute x min and max from the relative error. The y error bar gnuplot error bar is a vertical line plotted from (x, ylow) to (x, yhigh). If ydelta is specified instead of ylow and yhigh, ylow = y - ydelta and yhigh = y + ydelta are derived. If there are only two numbers on the record, yhigh and ylow are both set to y. The x error bar is a horizontal line computed in the same fashion. To get lines plotted between the data points, plot the data file twice, once with errorbars and once with lines (but remember to use the notitle option on one to avoid two entries in the key). Alternately, use the errorlines command (see errorlines (p.)). The error bars have crossbars at each end unless set bars is used (see set bars (p.) for details). If autoscaling is on, the ranges will be adjusted to include the error bars. See also http://gnuplot.sourceforge.net/demo/mgr.htmlerrorbar demos. See plot using (p.), plot with (p.), and set style (p.) for more information. Next: Errorlines Up: Plot Previous: Zticlabels Contents Index Ethan Merritt 2007-03-03
ylow and yhigh, default format)" plot "err.dat" with errorbars will result in (gif mode) # this should look the same set title "Demonstration of error bars (both ylow and yhigh)" plot "err.dat" using 1:2:3:4 with errorbars will result in (gif mode) set title "Demonstration of boxes" plot "err.dat" with boxes will result in (gif mode) set title "Demonstration of boxerrorbars" plot "err.dat" with boxerror will result in (gif mode) set title "Demonstration of xybars" plot "err.dat" using 1:2:3:4:5 with xybars will result in (gif mode) set autoscale set title "Demonstration of error bars (both ylow and yhigh)" set xlabel "Date\nTime" set timefmt "%y%m%d" set xdata time set key right set format x "%m/%d\n%y" plot "futures.dat" using 2:3:4:5 with errorbars will result in (gif mode) set title "Demonstration of financebars" plot "futures.dat" using 2:3:4:5:6 with financebars will result in (gif mode) set title "Demonstration of candlesticks" plot "futures.dat" using 2:3:4:5:6 with candlesticks will result in (gif mode) set xrange [-3:65] set yrange [ 4:14] set timefmt "" set xdata "" set xlabel "" set format x "" set tics set title "Demonstration of error bars (only ydelta)" plot "err.dat" using 1:2:5 with errorbars will result in (gif mode) set title "Plot data file twice to get lines and errorbars" plot "err.dat" with lines, "err.dat" using 1:2:3:4 with errorbars will result in (gif mode) set logscale y set title "Demonstration of error bars (only ydelta) with y logscale" plot [-3:65] [1:100] "err.dat" using 1:2:5 with errorbars set nologscale y will result in (gif mode) set logscale x set title "Demonstration of error bars (only ydelta) with x logscale" plot [1:100] [4:14] "err.dat" using 1:2:5 with errorbars set nologscale x will result in (gif mode) set autoscal