Unexpected error when plotting a bar chart

figure('Name','frequency of reduced category response by groups');
h = bar(mean_resp_bygroup([3,4,2,1],:)); %mean_resp_bygroup is a 4-by-2 double matrix
h.YLabel = 'Reduced Category Response';
h.DisplayName = {'OR','XOR'}; %legend labels
h.XTickLabels = {'W','X','Y','Z'};
legend();
title('Frequency of Reduced category response');

I get this error message: Expected one output from a curly brace or dot indexing expression, but there were 2 results.

I suspect that has something to do with how the function bar works in the background. Anyone has any idea how to solve this issue?

[jonas]

What line is the error referring to?

[Mingjia Hu]

h.YLabel = 'Reduced Category Response'

[jonas]

then I suspect that is where the error is ;)

[Mingjia Hu]

Now I get this error:

Error setting property 'YLabel' of class 'Axes':

Value must be 'matlab.graphics.Graphics'.

Answer 1

[Fangjun Jiang]

because your data is 4x2, h is an 1x2 array so you can't use h.YLabel. Check the value of h

You have to use h(1).YLabel but then 'YLabel' is not a valid property

[Mingjia Hu]

Then how can I add a Y label for the whole figure?

[jonas]

ax = gca;
ax.YLabel = 'blabla'

[Mingjia Hu]

Now I get this error:

Error setting property 'YLabel' of class 'Axes':

Value must be 'matlab.graphics.Graphics'.

[Fangjun Jiang]

'YLabel' is a property of the axes.

f=figure;
a=axes;
h=bar(rand(4,2));
a.YLabel.String='Reduced Category Response'
legend({'OR','XOR'})

[jonas]

Sorry, I always forget the .String field :)

[Mingjia Hu]

Thank you guys. Problem solved!