Histogram in App Designer

So I have this excel file and i want to make an histogram or scatter in app desginer for smoke and non smoker, can someone help me out ? I can't figure it out, because in the excel Smoker is just one column, and i want to make a histogram with 2 bars (different colours), one is for the smokers, and the other one is for non smokers.

[Rik]

The first step is to get your data into Matlab. How did you do that? What is the next step?

[Diogo Costa]

I already did that, i am quite comfortable with matlab, but this histogram is getting my head tired...

Plus i got also a graphic of systolic and age.

I only need now the histogram..

 handles.fileName = uigetfile('Pacientes.xlsx');
            t = readtable("Pacientes.xlsx","Sheet",1);
            app.UITable.Data = t;
           
            x = table2array(t(:,"Systolic"));
            y = table2array(t(:,"Age"));
            
            plot(app.UIAxes,y,x);

[Diogo Costa]

So i figure it out, thanks anyway :)

 t = readtable("Pacientes.xlsx","Sheet",1);
            
            x = table2array(t(:,"Smoker"));
            C = categorical(x,[1 0],{'Smoker','Non Smoker'})
            h = histogram(app.UIAxes2,C,'BarWidth',0.5)
                    

[Rik]

Feel free to move your solution to the answer section.

For next time you can also separately calculate the histcounts and then plot the frequencies as a bar chart.

[Diogo Costa]

But i have another problem now, i can't figure it out how to change the colors or the bars with that code, i didn't add anything, can you try help me ?

[Rik]

And that is why I tend to use histcounts. Have you tried reading the documentation for the histogram function to see what properties you can modify?

[Diogo Costa]

Sure, i saw that we can change the color, but i'm working in app designer so it's a bit different, i tried 'FaceColor' but I can't make the tow bars look in diferent colors

[Diogo Costa]

So I have this, but only turns the bars in red, and that's is not what i want, i want each bar with each color

t = readtable("Pacientes.xlsx","Sheet",1);
             app.UITable.Data = t;
            
           
            x = table2array(t(:,"Smoker"));
            C = categorical(x,[1 0],{'Smoker','Non Smoker'})
            h = histogram(app.UIAxes2,C,'BarWidth',0.5,'FaceColor',"r")
            
            
            
            legend(h(:), {'Smoker' 'Non Smoker'},'Location','northwest')

[Rik]

I don't think that is possible with histogram, so you will have to create two bar objects.

Answer 1

[Harry Smith]

This may help:

histogram(app.histogramPlot,data)

[Gligan Miron Marius]

Yes, in my case it works correctly.

...

I_hist=histogram(app.Hist, I_rgb);

...