Gnuplot Plot Data Error Bars
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 gnuplot error bars style Learn more about Stack Overflow the company Business Learn more about hiring developers or gnuplot error bars histogram posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow
Gnuplot Error Bars Standard Deviation
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 with errorbars plotting up vote 9 down vote
Gnuplot Set Bars
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 the bar at the x axis value 31, with the error bar start at (second column value)-(third column value), and end gnuplot xyerrorbars 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 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
ylow and yhigh, default format)" plot "err.dat" with errorbars will result in (gif mode) # this
Gnuplot Error Bars Color
should look the same set title "Demonstration of error bars (both gnuplot boxerrorbars ylow and yhigh)" plot "err.dat" using 1:2:3:4 with errorbars will result in (gif mode) set title "Demonstration gnuplot boxerrorbars example 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 http://stackoverflow.com/questions/10684182/gnuplot-with-errorbars-plotting "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 http://www.csse.uwa.edu.au/programming/gnuplot_demos/errorbar/errorbar.html "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 autoscale set nologscale set title "" [email protected]
3-d surfaces and data. Syntax: plot {ranges} {
values commands in a data file eliminate some points part of data UNIX commands Date/Time Data After Plotting Miscellaneous Stuff Plotting Numerical Data in a Data File (No.1) 1 | 2 | 3 | 4 Probably most of the gnuplot lovers in a scientific field use this program to draw a graph of some calculated results or experimental data. They see their results on their monitor, make some corrections, comparison of the calculated result with the experimental data, and so on. If it seems fine, the figure is saved in a postscript format and send it to a printer, otherwise an EPS file is included in a TeX document... What is the format which gnuplot can recognize ? 2-dimensional data 3-dimensional data Matrix 2-dimensional data In a data file, the data columns are separated by a white-space or tab. If a line begins with "#", this line is ignored. Generally gnuplot can read any data format if one specifies the format. See gnuplot help "using". # X Y 1.0 1.2 2.0 1.8 3.0 1.6 For example, if you have two-dimensional data, one line contains a pair of X and Y values, like the example above. If X or Y values have uncertainties, you need an extra column to give the errors. The order of columns is not important because you can specify which column is used for X or Y data. If the first column is the X data, and the second is the Y data, use using option as: gnuplot> plot "test.dat" using 1:2 If using is omitted, the first column is used for the X data, and the second is for the Y data automatically. There are two ways to make an error-bar for the Y value. The first one is that the Y value has uncertainties of plus/minus Z. The second one is that the Y value has a range [Z1,Z2]. In this case the lengths of the error bars below and above Y value are different. The former needs three columns, and the latter needs four columns. # X Y Z 1.0 1.2 0.2 2.0 1.8 0.3 3.0 1.6 0.2 # X Y Z1 Z2 1.0 1.2 0.8 1.5 2.0 1.8 0.3 2.3 3.0 1.6 1.0 2.1 To plot those data, gnuplot> plot "test.dat" using 1:2:3 with yerrorbars gnuplot> plot "test.dat" using 1:2:3:4 with yerrorbars one needs the using option. The number of data column required for data plotting depend on a kind of figure, which is summarized below. Data Format Columnusing with (X,Y) data X Y 1:2 lines, points, steps, linespoints, boxes, etc. Y has an error of dY X Y dY 1:2:3 yerrorbars X has an error of dX X Y dX 1:2:3 xerrorbars Y has an error of dY, and X has an error of dX X Y dX dY 1:2:3:4 xyerrorbars Y has a range of [Y1,Y2] X Y Y1 Y2 1:2:3:4 yerrorbars X has a range of [X1,X2] X Y X1 X2 1:2:3:4 xerrorbars Y has a range of [Y1,Y2], and X has a range of [X1,X2] X Y X1 X2 Y1 Y2 1:2:3:4:5:6 xy