Plot With Error Bars Gnuplot
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xlabel "Angle (deg)" set ylabel "Amplitude" set key box set title "Bragg reflection -- Peak only" plot "big_peak.dat" title "Rate" with errorbars, \ gnuplot error bars style "" smooth csplines t "Rate" Click here for minimal script to generate gnuplot error bars histogram this plot set bars small replot set bars large # Click here for minimal script to generate this gnuplot error bars standard deviation plot set samples 300 set xlabel "Time (sec)" set ylabel "Rate" set title "Ag 108 decay data" plot "silver.dat" t "experimental" w errorb, \ "" smooth csplines t "cubic smooth" #
Gnuplot Set Bars
error is column 3; weight larger errors less # start with rel error = 1/($3/$2) Click here for minimal script to generate this plot S=1 plot "silver.dat" t "experimental" w errorb,\ "" u 1:2:(S*$2/$3) smooth acsplines t "acspline Y/Z" Click here for minimal script to generate this plot plot "silver.dat" t "rate" w errorb,\ "" u 1:2:($2/($3*1.e1)) sm acs t "acspline gnuplot xyerrorbars Y/(Z*1.e1)",\ "" u 1:2:($2/($3*1.e3)) sm acs t " Y/(Z*1.e3)",\ "" u 1:2:($2/($3*1.e5)) sm acs t " Y/(Z*1.e5)" Click here for minimal script to generate this plot set logscale y set grid x y mx my replot Click here for minimal script to generate this plot unset logscale y plot "silver.dat" t "experimental" w errorb,\ "" smooth sbezier t "bezier" Click here for minimal script to generate this plot set logscale y plot "silver.dat" t "rate" w errorb, \ "" smooth sbezier t "bezier" # Click here for minimal script to generate this plot set samples 100 unset logscale unset grid set xlabel "Resistance [Ohm]" set ylabel "Power [W]" set title "UM1-Cell Power" n(x)=1.53**2*x/(5.67+x)**2 plot [0:50] "battery.dat" t "Power" with xyerrorbars, n(x) t "Theory" w lines Click here for minimal script to generate this plot plot [0:50] "battery.dat" t "Power" with boxxy, n(x) t "Theory" w lines Click here for minimal script to generate this plot plot [0:50] "battery.dat" u 1:2:3 t "Power" w xerr, n(x) t "Theory" w lines Click here for minimal script to generate this plot plot [0:50] "batt
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Gnuplot Boxerrorbars
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Gnuplot Boxerrorbars Example
Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it http://gnuplot.sourceforge.net/demo/mgr.html only takes a minute: Sign up gnuplot with errorbars plotting up vote 9 down vote favorite 4 The data in my "file.txt" file are as in the following (sample row shown) 31 1772911000 6789494.2537881 Note that the second column is the mean and the third is the standard deviation of my input sample. So, for the error bar, I would need http://stackoverflow.com/questions/10684182/gnuplot-with-errorbars-plotting the bar at the x axis value 31, with the error bar start at (second column value)-(third column value), and end at (second column value)+(third column value). I tried the following: plot "file.txt" using ($1-$2):1:($2+$1) with errorbars but the result is inappropriate. Any help? plot gnuplot share|improve this question asked May 21 '12 at 11:16 user506901 3343613 add a comment| 2 Answers 2 active oldest votes up vote 16 down vote accepted You need x:y:err, so try plot "file.txt" using 1:2:3 with yerrorbars You may instead want candlesticks. These are generally a box with error bars extending out of the top and bottom, but setting the mins and maxes the same should give you boxes of the required size: plot "file.txt" using 1:($2-$3):($2-$3):($2+$3):($2+$3) with candlesticks share|improve this answer edited May 21 '12 at 14:13 answered May 21 '12 at 11:38 Phil H 12.6k54083 Thanks. The first worked, but the second produced gnuplot> set style boxplot candlesticks ^ expecting 'data', 'function', 'line', 'fill' or 'arrow' gnuplot> –user506901 May 21 '12 at 11:47 2 @user506901 -- It loo
in those tutorials using gnuplot, a command-line-driven plotting program commonly available on Unix machines (though available for other platforms as well). You may find it helpful to look at the other tutorials as well; this one is intended to follow https://www.cs.hmc.edu/~vrable/gnuplot/using-gnuplot.html them quite closely. The instructions and samples given correspond to version 3.7 running under Linux, but the results should be similar everywhere. If you are using an older version, however, you might find a few of the more http://www.gnuplotting.org/tag/errorbars/ advanced features missing. Introduction gnuplot seems almost the antithesis of Kaleidagraph: the the Kaleidagraph tutorial calls Kaleidagraph "an easy-to-use if somewhat limited graphics program". gnuplot is a not-quite-as-easy-to use, though extremely powerful, command-line plotting program. Running gnuplot is easy: error bars from a command prompt on any system, type gnuplot. It is even possible to do this over a telnet or ssh connection, and preview the graphs in text mode! For best results, however, you should run gnuplot from within X Window, so that you can see better previews of your plots. Entering Data All the data sets you use in gnuplot should be typed into a text file first. There should be one data point per line. gnuplot error bars Each data point will consist of several numbers: the independent variable, the dependent variable, and optionally error bars. Each of these fields should be separated by a tab. Actually, any number of fields may be specified on each line; this is useful if you have multiple measurements for each data point, for instance. For information about how to access this additional information in your plots, see (fixme: add section) below. You may include any extra information you want in the file, such as a description of the data, headings for each of the data columns, and so on, as long as each such line begins with the comment character, #. The dataset used in this example is available in the file cavendish.data. Plotting Functions Basic Plotting Plotting functions in gnuplot is really quite easy. Suppose you want to plot the function f(x) = exp(-x^2 / 2). In gnuplot, exponentiation uses **, not ^. So, after starting up gnuplot, at the gnuplot> prompt you would type: plot exp(-x**2 / 2) Usually, you'll want a little more control over your plot, at least specifying the ranges for the x- and y-axes. You can specify these in a [minimum:maximum] form before the function. Specify the x range first, then the y range. You may leave off the y range, or both. We can revise our previous plot command to: plot [-4:4] exp(-x*
the last entry we had mean and standard variation data for five different conditions. Now let us assume that we have only two different conditions, but have measured with three different instruments A, B and C. We have used a ANOVA to verify that the data for the two conditions are significant different. As a result the plot in Fig. 1 should be created. Fig. 1 Plot the mean and variance of the given data (code to produce this figure) Therefore we store our data in a format, that can be used by the index command in Gnuplot. Note that the data have two empty lines between the blocks in the real data file: # mean std # A 0.77671 0.20751 0.33354 0.30969 # B 0.64258 0.22984 0.19621 0.22597 # C 0.49500 0.31147 0.14567 0.21857 Now every instrument is stored in a different data block containing both conditions as columns. The color definitions and axes settings are done in a similar way as in the previous blog entry. Note that we have to define two more colors for the boxes, because we use three different colors. Also we define a black line to plot the significance indicator (arrow). set style line 1 lc rgb 'gray30' lt 1 lw 2 set style line 2 lc rgb 'gray40' lt 1 lw 2 set style line 3 lc rgb 'gray70' lt 1 lw 2 set style line 4 lc rgb 'gray90' lt 1 lw 2 set style line 5 lc rgb 'black' lt 1 lw 1.5 set style fill solid 1.0 border rgb 'grey30' The significance indicator is created by three black arrows and a text label: # Draw line for significance test set arrow 1 from 0,1 to 1,1 nohead ls 5 set arrow 2 from 0,1 to 0,0.95 nohead ls 5 set arrow 3 from 1,1 to 1,0.95 nohead ls 5 set label '**' at 0.5,1.05 center For the plot the index command is used to plot first condition A, then B and then C by using block 0,1, and 2 respectively. The x-position of the boxes for instrument A are slightly shifted to the left, the ones for C to the right by subtracting or adding the value of bs. The value of bs has the width of one box in order to plot the boxes side by side. # Size of one box bs = 0.2 # Plot mean with variance (std^2) as boxes with yerrorbar plot 'statistics.dat' i 0 u ($0-bs):1:($2**2) notitle w yerrorb ls 1, \ '' i 0 u ($0-bs):1:(bs) t 'A' w