how to plot a grouped bar chart with categories and error bars

I want to plot a grouped bar chart with catogories and error bars. However, the following code returns an error: "The length of X must match the number of rows of Y." However, I have checked this and X does match Y.

x=categorical({'Q3';'Q6';'Q10';'Q15';'Q30';'Q50'});
y=[2.891586318,1.99422657,1.907652812,4.71298388,6.007681496,6.718181667;3.229392123,3.36482536,4.089746011,5.204662107,6.761377397,7.978099976];
errorplus=[0.167797,0.314574,0.081018,0,0.116596,0;0,0.173132,0,0.231752,1.15677,1.204734];
errorminus=errorplus;
figure;
bar(x,y);
hBar = bar(y, 0.8);                                                  
for k1 = 1:size(y,2)
    ctr(k1,:) = bsxfun(@plus, hBar(k1).XData, hBar(k1).XOffset');     
    ydt(k1,:) = hBar(k1).YData;                    
end
hold on
errorbar(ctr, ydt, errorplus, '.r')                  
hold off
ylabel('Angle Values [°]','FontSize',18)
set(gca,'linewidth',2,'FontSize',14)
ylim([0 10]);
set(gca,'XTickLabel',x)

Answer 1

[Mehmed Saad]

Take transpose of y

[sophp]

Okay, now I get this error: "Subscripted assignment dimension mismatch."

x=categorical({'Q3','Q6','Q10','Q15','Q30','Q50'});
z=[2.891586318,1.99422657,1.907652812,4.71298388,6.007681496,6.718181667;3.229392123,3.36482536,4.089746011,5.204662107,6.761377397,7.978099976];
y=transpose(z);
a=[0.167797,0.314574,0.081018,0,0.116596,0;0,0.173132,0,0.231752,1.15677,1.204734];
errorplus=transpose(a);
errorminus=errorplus;
figure;
bar(x,y);
hBar = bar(y, 0.8);                                                  
for k1 = 1:size(y,2)
    ctr(k1,:) = bsxfun(@plus, hBar(k1).XData, hBar(k1).XOffset');     
    ydt(k1,:) = hBar(k1).YData;                    
end
hold on
errorbar(ctr, ydt, errorplus, '.r')                  
hold off
ylabel('Signal Intensity','FontSize',18)
set(gca,'linewidth',2,'FontSize',14)
ylim([0 10]);
set(gca,'XTickLabel',x)

[Mehmed Saad]

do not take transpose for errorplus take only for y

errorplus=(a);

error occured because in the following command the dimensions are

errorbar(ctr, ydt, errorplus, '.r')

ctr dimension is [2x6], ydt dimension is [2x6] & errorplus dimension is [6x2]

either change ctr(k1,:) with ctr(:,k1) & ydt(k1,:) with ydt(:,k1) or donot take errorplus transpose

[sophp]

I did as you suggested by not taking a transpose of the error but I still get this error: "Subscripted assignment dimension mismatch."

x=categorical({'Q3','Q6','Q10','Q15','Q30','Q50'});
z=[2.891586318,1.99422657,1.907652812,4.71298388,6.007681496,6.718181667;3.229392123,3.36482536,4.089746011,5.204662107,6.761377397,7.978099976];
y=transpose(z);
a=[0.167797,0.314574,0.081018,0,0.116596,0;0,0.173132,0,0.231752,1.15677,1.204734];
errorplus=a;
errorminus=errorplus;
figure;
bar(x,y);
hBar = bar(y, 0.8);                                                  
for k1 = 1:size(y,2)
    ctr(k1,:) = bsxfun(@plus, hBar(k1).XData, hBar(k1).XOffset');     
    ydt(k1,:) = hBar(k1).YData;                    
end
hold on
errorbar(ctr, ydt, errorplus, '.r')                  
hold off
ylabel('Signal Intensity','FontSize',18)
set(gca,'linewidth',2,'FontSize',14)
ylim([0 10]);
set(gca,'XTickLabel',x)

[Mehmed Saad]

your matlab version? mine is R2019a and it is working

[sophp]

Ah yes sorry Muhammad, it works now after I cleared the command window