Errorbars on a select dataset

I am trying to make an errorbar on a certain dataset. Here the code I have now:

M=mean(f);
x=g;
y=f;
errorbar(g,f,err);
plot(data2(:,2),data2(:,3:5))
xlim([0 50000])
ylim([0 100])

But i keep getting an error on line 4.

Answer 1

[Michael Van de Graaff]

You haven't defined err, f, or g.

Also, please post the FULL error message for better help

this produces an errorbar plot:

x = 1:10;
y = sqrt(x);
yerr = rand(size(y));
errorbar(x,y,yerr)

Answer 2

[Star Strider]

Try this —

data2 = sortrows(randn(10,5),2);                    % Correct For Missing Data
Experimental = sortrows(randn(10,5),2);             % Correct For Missing Data

g=Experimental(:,2);
f=Experimental(:,3:5);

M=mean(f);                                          % This Won't Work - It Takes The 'mean' Of The Columns And You Want The Mear Of The Rows
x=g;
y=mean(f,2);                                        % This WILL Work (Rows 'mean')

err = std(f,[],2);                                  % Correct For Missing 'err' Assignment 

figure
errorbar(x,y,err);
hold on                                             % Use The 'hold' Functiono To Plot More Than One Series On An 'axes' Ofject
plot(data2(:,2),data2(:,3:5))
hold off

% xlim([0 50000])                                     % Use With Actual Data
% ylim([0 100])                                       % Use With Actual Data

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