Gnuplot Xy Error
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Gnuplot Error Bars Style
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Gnuplot Error Bars Standard Deviation
Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up gnuplot with errorbars plotting up vote 9 down vote favorite 4 The gnuplot set bars 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 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 gnuplot error bars color 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 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:
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Gnuplot Xyerrorbars
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Gnuplot Linespoints Error Bars
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: Sign up Gnuplot asymmetric xy errorbars up vote http://stackoverflow.com/questions/10684182/gnuplot-with-errorbars-plotting 3 down vote favorite I need some help with Gnuplot 4.4 - I've been trying to 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 http://stackoverflow.com/questions/10824336/gnuplot-asymmetric-xy-errorbars 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 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 5,19652156 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 '
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 https://www.cs.hmc.edu/~vrable/gnuplot/using-gnuplot.html 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 error bars 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 gnuplot error bars 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**2 / 2) Here, the y range will be automatically determined. More Funct