Error Bars In 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, \ "" smooth csplines t "Rate"
Gnuplot X1y2
Click here for minimal script to generate this plot set bars small replot gnuplot xerrorbars set bars large # Click here for minimal script to generate this plot set samples 300 set xlabel "Time
Gnuplot Xyerrorbars
(sec)" set ylabel "Rate" set title "Ag 108 decay data" plot "silver.dat" t "experimental" w errorb, \ "" smooth csplines t "cubic smooth" # error is column 3; weight larger errors less # gnuplot asymmetric error bars 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 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 gnuplot errorbars 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] "battery.dat" u 1:2:4 t "Power" w yerr, n(x) t "Theory" w lines Click here for minimal script to generate this plot set logscale y plot [0:50] "battery.dat" u 1
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Gnuplot Error Bars Example
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Gnuplot Yerrorbars
Join them; it 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 http://gnuplot.sourceforge.net/demo/mgr.html 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 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 http://stackoverflow.com/questions/10684182/gnuplot-with-errorbars-plotting 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 12.6k44083 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 looks (to me from the gnuplot docs) that you would just need plot "file.txt" using ... with candlesticks -- I'm not sure what Phil H was doing with set style boxplot candlesticks ... (I'm using gnuplot 4.4.2), maybe this behavior has changed in 4.6? –mgilson May 21 '12 at 12:30 @mgilson: You're right, I was trusting my understanding of the help file, I don't use candlesticks often enough to remember. Fixed now, thanks. –Phil H May 21 '12 at 13:56 1 @PhilH -- the offending line set style boxplot candlesticks is still there ;-) -- You'll want to remove that line as well. –mgilson Ma
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company http://stackoverflow.com/questions/10824336/gnuplot-asymmetric-xy-errorbars Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, https://www.cs.hmc.edu/~vrable/gnuplot/using-gnuplot.html just like you, helping each other. Join them; it only takes a minute: Sign up Gnuplot asymmetric xy errorbars up vote 3 down vote favorite I need some help with Gnuplot 4.4 - I've been trying to error bars get 2D data scatter plotted with errorbars in both the x and y dimensions. Both x and y dimensions have high/low errorbars, that is the errorbars are not symmetric, so each data point uses six values (x,y,xlow,xhigh,ylow,yhigh). Gnuplot's man pages say this is possible and I've found examples on the net - both cases suggest using data files with six records for each data point (the (x,y,xlow,xhigh,ylow,yhigh) format) but I can't for the life gnuplot error bars of me get Gnuplot to behave. The best I can do when plotting a single test point (1.0 3.0 0.25 0.5 0.25 0.5) is to get a plot of the test point with disembodied errorbars floating in nearby space. gnuplot share|improve this question edited May 31 '12 at 1:40 Dan 5,16652056 asked May 30 '12 at 21:11 user1427035 1612 Can you post some example code/data which illustrate your problem? –andyras May 30 '12 at 21:43 add a comment| 1 Answer 1 active oldest votes up vote 4 down vote The reason your error bars are "disembodied" is that your x (1.0) is not between xlow (.25) and xhigh (.5). Your y (3.0) is also not between your ylow (.25) and yhigh (0.5). If you want the lows and highs to represent the difference from the central variable, you should use a command like this: plot "test.dat" u 1:2:($1-$3):($1+$4):($2-$5):($2+$6) with xyerrorbars t "test point" Running this on your test file, I get the following plot: share|improve this answer answered May 30 '12 at 23:39 Dan 5,16652056 1 I wonder why it is implented this way in gnuplot. Errorbars should never be "disembodied" and it's more work to write value + error than just error. –con-f-use Apr 27 '15 at 15:33 @con-f-use: Error bars could in gene
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 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 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: 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. 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