Barerror

Plots a multiple bar graph with error bars

Description

BarrError combines the functions 'bar' and 'errorbar' in a single function. As far as I know, 'errorbar' cannot accomodate several bars per X point (as 'bar' does), so is not easy to plot one of the most common graph types (at least in natural sciences). 'BarError' tries to fill this gap.

Sintax:
barerror(X,Y,E,width,ycolor,ecolor,varargin)
x: vector of X values
y: vector or matrix of Y values
e: vector or matrix of error values (plotted simmetrically)
width: bar width
ycolor: one-letter color code for the bar
ecolor: one-letter color code for the error bar

Warnings
Vector x, and vector/array y and e must be the same length
y and e must have the same number of columns if they are arrays
Length of ycolor and ecolor must be equal to the number of columns of y and e

Example:
x= (1:5)';
y= 20*rand(length(x),3);
e= rand(length(x),3);
ycolor= ['b','r','g'];
ecolor= ['k','k','k'];
labels= {'G1','G2','G3','G4','G5'};
barerror(x,y,e,1,ycolor,ecolor,labels);

• Acknowledgements: This submission has inspired the following:; barerrorbar
• MATLAB release: MATLAB 7 (R14)

[Swapnil G]

Did not work...gave an error that matrix dimensions must agree

[Nina Gateman]

It didn't work for me either. For what I want to do; I don't need to input the x axis values (since I'm plotting "group names" eg group 1 result, group2 result etc). So the Xaxis for me is the actual group name (a String) and its only the result values I need to plot against the y xais, therefore the syntax should allow for only needing to input yaxis matrix....

[Michael Frank]

worked fine for me; it's still not the ideal matlab bar graph function, which would allow good axis labeling, error bars, color choice, etc.

[Doris Tsao]

didn't work for me... gave error that input dimensions must agree

[Brahim HAMADICHAREF]

Indeed it takes time to test one simple
example but here is one !

nN = 5;
nM = 4;
X = [1:nN]';
Y = 0.5+0.5*rand(nN, nM);
E = 0.1*rand(nN, nM);
barerror(X, Y, E, 1, 'k')

Note that I added the mode 'group'
for bar function call

Brahim

[Francisco de Castro]

I must say: the "errors" reported by Swapnil and Tsao are not errors in the function but in their input data, as the function kindly reminds them.
The comment by Gateman is now included.

[Falofolio]

 

[Falofolio]

Works perfect. Thanks for this great script.