Error Bars

hi,

I have some errors on x and y axes and I am able to plot error on the y axis by using errorbar. I am not able to plot error on x axis together on the same graph. Here is the code.

close all;
clear all;
clc;

r0 = 2.2;

vout = [0.391710782 0.349193537 0.299451595 0.268145156];
x_conc = [605.5 697 807 949];
rs = (3.6./vout-2)/r0; 
error_vout = [0.014846491 0.009265438 0.020145148 0.018445414];
error_conc = [16.5 2 6 6]; % error in concentration
error_rs = 3.6*error_vout./vout.^2;

figure;
errorbar(x_conc,rs,error_rs,'.b','marker','h','markersize',12,'markeredgecolor','b','markerfacecolor','r');
xlim([0.9*min(x_conc) 1.1*max(x_conc)]);

x_conc is my x axis and rs is y. error_rs is the error on y axis which I plotted. In the graph it is shown vertically since rs is on y axis. Now how can I plot error_conc? I don't know to plot this error horizontally since x_conc is on x axis.

I will be thankful if someone helps.

Best,

Answer 1

[Daniel Shub]

There are a number of functions on the FEX that should allow you to do this. I haven't used any of them, but

http://www.mathworks.com/matlabcentral/fileexchange/290-eplots

looks promising.

If that doesn't work for you maybe this one will:

http://www.mathworks.com/matlabcentral/fileexchange/5444-xyerrorbar

Answer 2

[Judah S]

Thanks Daniel but I am not sure I can use it in this case.

[Daniel Shub]

Can you tell us why you cannot use it? I have added another FEX submission link, that might be better for what you want.

[Judah S]

http://www.mathworks.com/matlabcentral/fileexchange/5444-xyerrorbar

this worked.

Thanks.

[Judah S]

First one could probably be useful if I had gone for each point and defined the error separately. It's almost same if I run a command to draw line on both directions of the points.