Error Bar 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" Click here for minimal script to generate this gnuplot x1y2 plot set bars small replot set bars large # Click here for minimal script to gnuplot xerrorbars generate this plot set samples 300 set xlabel "Time (sec)" set ylabel "Rate" set title "Ag 108 decay data" plot "silver.dat" t
Gnuplot Xyerrorbars
"experimental" w errorb, \ "" smooth csplines t "cubic smooth" # 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
Gnuplot Asymmetric Error Bars
"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 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 gnuplot errorbar 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 1:2:4 t "Power" w yerr, n(x) t "Theory" w lines Click here for minimal script to generate this plot set logscale xy plot [1:50] "battery.dat" t "Power" w xyerr, n(x) t "Theory" w lines Click here for minimal script to generate this plot unset logscale set bars small plot [0:50] "battery.dat" t "Power"
ylow and yhigh, default format)" plot "err.dat" with errorbars will result in (gif mode) # this
Gnuplot Tutorial
should look the same set title "Demonstration of error bars (both gnuplot yerrorbars ylow and yhigh)" plot "err.dat" using 1:2:3:4 with errorbars will result in (gif mode) set title "Demonstration gnuplot error bar color 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://gnuplot.sourceforge.net/demo/mgr.html "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 "" woo@playfair.stanford.edu
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 Business Learn more about hiring developers or posting http://stackoverflow.com/questions/24117219/gnuplot-types-of-error-bars 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, just like you, helping each other. Join them; it only takes a http://lowrank.net/gnuplot/datafile-e.html minute: Sign up Gnuplot types of error bars up vote 3 down vote favorite 1 Can we change the type of line used by gnuplot in the errorbars? This is my gnuplot code: set terminal postscript eps color set output '| error bar epstopdf --filter --outfile=plot.pdf' set xlabel "Simulation days" set xtics nomirror set ylabel "Time (seconds)" set ytics nomirror set logscale y set key left top plot "data1.csv" using 1:($2/1000):($3/1000) with yerrorbars pt 5,\ "data2.csv" using 1:($2/1000):($3/1000) with yerrorbars pt 7 The error bars from the first plot are different from the second one. The first line is solid, but the second is dotted. Its possible to define the style of the error bar? plot gnuplot share|improve this question asked Jun 9 '14 at error bar gnuplot 9:22 mariolpantunes 597822 Oh, wow, did not know about the output '| ...'. +1 for teaching me that :) –Bernhard Jun 10 '14 at 15:01 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote accepted In your case, the easiest option is to use the solid terminal option to have only solid lines: set terminal postscript eps color solid lw 3 set output '| epstopdf --filter --outfile=plot.pdf' set samples 10 set xrange [0:10] unset key plot '+' using 1:1:(0.2*$1) w yerrorbars, \ '' using 1:(1.5*$1):(0.1*$1) w yerrorbars Result with 4.6.4: Alternatively, you can use lt 1 lc 2 for the second plot, which selects the line pattern of the first linetype (which is solid), and the color of the second one: plot '+' using 1:1:(0.2*$1) w yerrorbars, \ '' using 1:(1.5*$1):(0.1*$1) lt 1 lc 2 w yerrorbars share|improve this answer answered Jun 9 '14 at 9:31 Christoph 29.3k72847 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged plot gnuplot or ask your own question. asked 2 years ago viewed 3401 times active 2 years ago Related 0gnuplot: Points overlap in
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