How to Add text to 3-D bar chart (bar3) on the top of each bar?

I am trying to visualise data as a 3-D bar chart. I used "bar3" function.

How I can add text (the value) on the top of each chart?

I tried to write the following code, and it works well.

But I still need to add some text on the plot.

DATA_Sensitivity=[
72.71683742	46.68656078	52.79741961	52.20167451	50.83051373;
74.50372032	52.25829563	64.02911011	62.78763198	61.79562594;
63.10542986	50.6254902	56.6627451	53.09019608	52.96666667;
67.62513583	58.98431373	62.33590527	62.04112554	65.53002292;
79.37428385	53.68823529	62.44705882	67.95098039	64.88431373];

%% Sensitivity Bar Chart
figure
h = bar3(DATA_Sensitivity,'detached');
hh = get(h(3),'parent');
set(hh,'yticklabel',['PSD';'STD';'AM ';'SE ';'DE ']);
hhh = get(h(3),'parent');
set(hhh,'xticklabel',['ANN';'DT ';'LDA';'SVM';'KNN']);
ax = gca;
ax.YLabel.String = 'features';
ax.YLabel.FontSize = 16;
ax.XLabel.String = 'classfiers';
ax.XLabel.FontSize = 16;
ax.ZLabel.String = 'Sensitivity';
ax.ZLabel.FontSize = 16;
ax.Title.String = 'Avrage Sensitivity';
ax.Title.FontSize = 16;
zlim([0 100])

Answer 1

[Cris LaPierre]

What will the labels be?

Have you looked at this answer yet?

Assuming your labels are numeric, here's how I'd do it using the code you've provided

[X,Y] = meshgrid(1:size(DATA_Sensitivity,2), 1:size(DATA_Sensitivity,1));
text(X(:), Y(:), DATA_Sensitivity(:), num2str(DATA_Sensitivity(:)), 'HorizontalAlignment','center', 'VerticalAlignment','bottom')

[Roberta Zeziola]

don't function! matlab R2017

[Cris LaPierre]

We'd need more information:

• The full code you have tried already
• the complete error message you are getting
• your specific version of matlab (R2017a or b?).

[Roberta Zeziola]

Oh sure, version R2017a

matrix=[0.9187  0.9534  0.9462 ; 0.9002  0.9199  0.8282 ; 0.9003  0.9175  0.8223 ; 0.9015  0.9141  0.8435;  0.9964  0.9332  0.4070]
figure
h = bar3(matrix,0.4,'detached');
 
%h(1).Visible = 'on';
set(h(1),'facecolor','c');
set(h(2),'facecolor','y');
set(h(3),'facecolor','green');
hh = get(h(3),'parent');
set(hh,'yticklabel',['WT/Ens_{2}' ,'GPR/Ens_2','Tree/Ens_2';'WT/Ens_{4}','GPR/Ens_4','Tree/Ens_4';'WT/Ens_{7}','GPR/Ens_7','Tree/Ens_7';'WT/Ens_{9}','GPR/Ens_9','Tree/Ens_9';'WT/Ens_{8}','GPR/Ens_8','Tree/Ens_8'],'fontweight','bold','FontSize',11,'YColor','b');
hhh = get(h(3),'parent');
set(hhh,'xticklabel',[{'WT/Ens'},{'GPR/Ens'},{' Tree/Ens'}],'fontweight','bold','FontSize',11,'XColor','b');
ax = gca;
ax.ZLabel.String = 'Value Correlation';
ax.ZLabel.FontSize = 12;
ax.ZLabel.Color='b';
ax.Title.String = 'Corr';
ax.Title.FontSize = 13;
ax.Title.Color='b';

Thank you so much

i can't enter values on the chart

[Roberta Zeziola]

Sorry the second part was:

[P,Z]=meshgrid(1:size(matrix,2),1:size(matrix,2));
text(P(:),Z(:),matrix(:), num2str(matrix(:)),...
  'HorizontalAlignment','center','VerticalAlignment','bottom')

I had try with your code and your matrix, the code error is the same, it is:

Subscript indices must either be real positive integers or logicals.

[Cris LaPierre]

Looks like I made a mistake in the original answer. It didn't affect the OP because DATA_Sensitivity is square. Try the following instead:

[P,Z]=meshgrid(1:size(matrix,2),1:size(matrix,1));
text(P(:),Z(:),matrix(:), num2str(matrix(:)),...
  'HorizontalAlignment','center','VerticalAlignment','bottom')

[Roberta Zeziola]

Thank you I had try it doesn't work , same message of error :(((

[Cris LaPierre]

Works for me in R2017a. I'm using the Windows install.

matrix=[0.9187  0.9534  0.9462 ; 0.9002  0.9199  0.8282 ; 0.9003  0.9175  0.8223 ; 0.9015  0.9141  0.8435;  0.9964  0.9332  0.4070];
figure
h = bar3(matrix,0.4,'detached');
 
set(h(1),'facecolor','c');
set(h(2),'facecolor','y');
set(h(3),'facecolor','green');
hh = get(h(3),'parent');
set(hh,'yticklabel',['WT/Ens_{2}' ,'GPR/Ens_2','Tree/Ens_2';'WT/Ens_{4}','GPR/Ens_4','Tree/Ens_4';'WT/Ens_{7}','GPR/Ens_7','Tree/Ens_7';'WT/Ens_{9}','GPR/Ens_9','Tree/Ens_9';'WT/Ens_{8}','GPR/Ens_8','Tree/Ens_8'],'fontweight','bold','FontSize',11,'YColor','b');
hhh = get(h(3),'parent');
set(hhh,'xticklabel',[{'WT/Ens'},{'GPR/Ens'},{' Tree/Ens'}],'fontweight','bold','FontSize',11,'XColor','b');
ax = gca;
ax.ZLabel.String = 'Value Correlation';
ax.ZLabel.FontSize = 12;
ax.ZLabel.Color='b';
ax.Title.String = 'Corr';
ax.Title.FontSize = 13;
ax.Title.Color='b';

[P,Z]=meshgrid(1:size(matrix,2),1:size(matrix,1));
text(P(:),Z(:),matrix(:), num2str(matrix(:)),'HorizontalAlignment','center','VerticalAlignment','bottom')

[Roberta Zeziola]

ohh Cris at me work not! I had insert manually

Thank you so much

[Roberta Zeziola]

look at my screenshot I attached it to you

[Roberta Zeziola]

hello Cris you have been very kind speed and availability, thanks. I've seen that if I try everything online with the same version I have on my pc, everything works while if I do it with the installed version it doesn't work. I try to uninstall and reinstall matlab. we hope well

Roberta.

[Roberta Zeziola]

Hi Cris I had to use matlab online because despite having uninstalled and reinstalled on my pc, the code only works online. mah

I wanted to thank you

[Cris LaPierre]

You might consider reporting this to MathWorks as a potential bug. It looks like you are using a mac, so your version is slightly different than mine.

https://servicerequest.mathworks.com/mysr/cp_case_new1

[Roberta Zeziola]

Ok Thank you mauch Cris , yes I'm using a mac

[Samir Gouin]

Hi, just wondering how we can adjust the size of the text on top of the bars?

[Cris LaPierre]

@Samir Gouin, adjust the FontSize property when using text.

matrix=[0.9187  0.9534  0.9462 ; 0.9002  0.9199  0.8282 ; 0.9003  0.9175  0.8223 ; 0.9015  0.9141  0.8435;  0.9964  0.9332  0.4070];
figure
h = bar3(matrix,0.4,'detached');
 
set(h(1),'facecolor','c');
set(h(2),'facecolor','y');
set(h(3),'facecolor','green');
hh = get(h(3),'parent');
set(hh,'yticklabel',['WT/Ens_{2}' ,'GPR/Ens_2','Tree/Ens_2';'WT/Ens_{4}','GPR/Ens_4','Tree/Ens_4';'WT/Ens_{7}','GPR/Ens_7','Tree/Ens_7';'WT/Ens_{9}','GPR/Ens_9','Tree/Ens_9';'WT/Ens_{8}','GPR/Ens_8','Tree/Ens_8'],'fontweight','bold','FontSize',11,'YColor','b');
hhh = get(h(3),'parent');
set(hhh,'xticklabel',[{'WT/Ens'},{'GPR/Ens'},{' Tree/Ens'}],'fontweight','bold','FontSize',11,'XColor','b');
ax = gca;
ax.ZLabel.String = 'Value Correlation';
ax.ZLabel.FontSize = 12;
ax.ZLabel.Color='b';
ax.Title.String = 'Corr';
ax.Title.FontSize = 13;
ax.Title.Color='b';

[P,Z]=meshgrid(1:size(matrix,2),1:size(matrix,1));
text(P(:),Z(:),matrix(:), num2str(matrix(:)),'HorizontalAlignment','center','VerticalAlignment','bottom',...
    'FontSize',20)

[Samir Gouin]

Thanks!

It worked but the labels (e.g., "FC2") are weirdly positioned no matter how I rotate the graph. Any ideas on how to fix it?

CODE:

labels = {'F1', 'FC1', 'C1', 'Fz', 'FCz', 'Cz', 'F2', 'FC2', 'C2'};

set(gca,'XTick',[], 'YTick', [])

[X,Y] = meshgrid(1:size(z,2), 1:size(z,1));

text(X(:), Y(:), z(:), labels, 'HorizontalAlignment','center', 'VerticalAlignment','bottom')

[Cris LaPierre]

I'm not sure I see the issue. A simple example seems to work as expected for me.

z=[7 4.5 5; 5 5.5 6; 7 8.5 10]; 
figure
b = bar3(z);
for k = 1:length(b)
    zdata = b(k).ZData;
    b(k).CData = zdata;
    b(k).FaceColor = 'interp';
end
labels = {'F1', 'FC1', 'C1', 'Fz', 'FCz', 'Cz', 'F2', 'FC2', 'C2'};
set(gca,'XTick',[], 'YTick', [])
[X,Y] = meshgrid(1:size(z,2), 1:size(z,1));
text(X(:), Y(:), z(:), labels, 'HorizontalAlignment','center', 'VerticalAlignment','bottom')

[Netanel shachak]

Hi,

Thanks for the great answer above!

Is there any way to get more space between the different bars (Y,M,C,K)?

Thanks

[Cris LaPierre]

There does not appear to be a property in bar3 that allows for adjusting the spacing in the y direction.

You can specify your inputs for y using the following syntax, but if the increment is uniform between the values, it always gets normalized back to looking exactly the same.

bar3(y,z)