How to specify limit of right y axis, and add values above bar

Hi All,

I am kindly asking for help to specify limits in the right y-axis (I have been trying to use a lot of commands but not working , mine is 2016a ) as well as I'd like to intrdouce the values above bars.

figure1=figure;

E = [31 15.5 72.2 36 71.6 700 590 610;zeros(1,8)]'

sigma = [zeros(1,8);940 2020 3550 99.8 2413 54000 21000 27000]'

[hAx,H1,H2] =plotyy([1:8],sigma, [1:8],E, 'bar', 'bar');

set(H1,'FaceColor','r') %

set(H2,'FaceColor','b') %

x_axisname={'x','y','z','notshown','xx','yy','zz','K'};

set(gca,'xticklabel',x_axisname)

mul_axes=legend([H1(1) H2(1)],'E','strength','FontSize',31); % name for multiple axes

lgd.FontSize = 31;

%ylim([0 10])

set(hAx,'FontSize',31)

set(gca,'FontSize',31);

hold off

Answer 1

[Adam Danz]

Starting 2016a, you should use yyaxis() instead of plotyy().

figure1=figure;
E = [31 15.5 72.2 36 71.6 700 590 610;zeros(1,8)]';
sigma = [zeros(1,8);940 2020 3550 99.8 2413 54000 21000 27000]';

yyaxis left
H1 = bar(1:size(sigma,1), sigma, 'FaceColor', 'r');
text(H1(2).XData,H1(2).YData, strsplit(num2str(H1(2).YData)),'VerticalAlignment','bottom','HorizontalAlignment','Left')
set(gca,'YColor', 'r')
ylabel('Sigma')


yyaxis right
H2 = bar(1:size(E,1), E, 'FaceColor', 'b');
ylim([0,800])
text(H2(1).XData,H2(1).YData, strsplit(num2str(H2(1).YData)),'VerticalAlignment','bottom','HorizontalAlignment','Right')
set(gca,'YColor', 'b')
ylabel('E')

x_axisname={'x','y','z','notshown','xx','yy','zz','K'};
set(gca,'xticklabel',x_axisname)
mul_axes=legend([H1(1) H2(1)],'strength','E','FontSize',31); % name for multiple axes 
lgd.FontSize = 31;

set(gca,'FontSize',31);
hold off 

[Ali Tawfik]

Hi Adam,

Thanks for your prompt reply.

It's working only for that graph, I have been trying to do the same with values from excel, not working or even another bar plot (like only one y-axis), also not working.

So would you mind explaining the following command lines:

H1 = bar(1:size(sigma,1), sigma, 'FaceColor', 'r');

text(H1(2).XData,H1(2).YData,strsplit(num2str(H1(2).YData)),'VerticalAlignment','bottom','HorizontalAlignment','Left')

I hope you can clarify your answer more.

Looking to hearing from you.

Thanks again!

Thank you,

[Adam Danz]

The bar() and text() functions are fully explained in those links.

Could you provide the E and sigma values you're using for the data that breaks the code? Also please explain what it means "it's not working". Are you getting an error message? If yes, please provide the entire copy-pasted error message.

[Ali Tawfik]

Thanks again for your reply.

I already have passed through bar() and text(), (I am still asking about XData

and YData ?

I attached the figure obtained which is not displayed the values above the bars, it's between the bars and even not appeared

As I already had mentioned before, bear in mind, that time, I am using data from excel but should work normaly ?

Thanks,

[Adam Danz]

The source of the data (eg excel) won't affect the data as long as you're loading it properly into matlab.

I can't diagnose the problem without seeing the inputs. Look at your data and compare it with the data from the working example I provided. What's different?

H1 and H2 are outputs from bar(). They are handles to the bar objects. The handles contain a property 'XData' and 'YData'. XData are the x location of each bar; YData are the height of each bar. In the example you provided, sigma is a matrix and the first column are zeros which is why I used the 2nd column as the 'YData' (H1(2).YData). It looks like you're using the column that contains the 0s. If you understand how text() works and how to look at your data, this should be faily easy to troubleshoot.

[Ali Tawfik]

Hi Adam,

you are right, I have checked and found the mistake.

Again, thanks for your kind, I also added another question, hope you could have a look, and let me know your opinion :)

thanks,

[Adam Danz]

Glad I could help.