Error Bars Gnuplot Example
Contents |
ylow and yhigh, default format)" plot "err.dat" with errorbars will result in (gif mode) # this gnuplot error bars and lines 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 tutorial 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 gnuplot error bars histogram "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
Gnuplot Error Bars Color
"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 gnuplot error bars style the workings and policies of this site About Us Learn more gnuplot plot error bars about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack
Gnuplot X1y2
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 http://www.csse.uwa.edu.au/programming/gnuplot_demos/errorbar/errorbar.html each other. 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 the second column is the mean and the third is the standard deviation of my input sample. http://stackoverflow.com/questions/10684182/gnuplot-with-errorbars-plotting 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 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',
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. http://www.gnuplotting.org/tag/errorbars/ As a result the plot in Fig. 1 should be created. Fig. 1 Plot the mean https://www.nsnam.org/docs/manual/html/gnuplot.html 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 error bars 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 plot error bars 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 boxes ls 2, \ '' i 1 u 0:1:($2**2) notitle w yerrorb ls 1, \ '' i 1 u 0:1:(bs) t 'B' w boxes ls 3, \ '' i 2 u ($0+bs):1:($2**2) notitle w yerrorb ls 1, \ '' i 2 u ($0+bs):1:(bs) t 'C' w boxes
2 common methods to make a plot using ns-3 and gnuplot (http://www.gnuplot.info): Create a gnuplot control file using ns-3‘s Gnuplot class. Create a gnuplot data file using values generated by ns-3. This section is about method 1, i.e. it is about how to make a plot using ns-3‘s Gnuplot class. If you are interested in method 2, see the "A Real Example" subsection under the "Tracing" section in the ns-3 Tutorial. Creating Plots Using the Gnuplot Class¶ The following steps must be taken in order to create a plot using ns-3‘s Gnuplot class: Modify your code so that is uses the Gnuplot class and its functions. Run your code so that it creates a gnuplot control file. Call gnuplot with the name of the gnuplot control file. View the graphics file that was produced in your favorite graphics viewer. See the code from the example plots that are discussed below for details on step 1. An Example Program that Uses the Gnuplot Class¶ An example program that uses ns-3‘s Gnuplot class can be found here: src/stats/examples/gnuplot-example.cc In order to run this example, do the following: $ ./waf shell $ cd build/debug/src/stats/examples $ ./gnuplot-example This should produce the following gnuplot control files in the directory where the example is located: plot-2d.plt plot-2d-with-error-bars.plt plot-3d.plt In order to process these gnuplot control files, do the following: $ gnuplot plot-2d.plt $ gnuplot plot-2d-with-error-bars.plt $ gnuplot plot-3d.plt This should produce the following graphics files in the directory where the example is located: plot-2d.png plot-2d-with-error-bars.png plot-3d.png You can view these graphics files in your favorite graphics viewer. If you have gimp installed on your machine, for example, you can do this: $ gimp plot-2d.png $ gimp plot-2d-with-error-bars.png $ gimp plot-3d.png An Example 2-Dimensional Plot¶ The following 2-Dimensional plot was created usi