Categorical bar plot in AppDesigner (change colors and add refline)

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Christian 2019-5-20

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https://ww2.mathworks.cn/matlabcentral/answers/463083-categorical-bar-plot-in-appdesigner-change-colors-and-add-refline

评论： Jake 2019-6-5

采纳的回答： Kojiro Saito

在 MATLAB Online 中打开

Hello everybody,

I'm currently facing some issues with my categorical bar plot in Appdesigner. In the following a short example of what I'd like to achieve:

            categorie=categorical({'Asia','USA','Europe'});
            categorie = reordercats(categorie,{'Europe' 'Asia' 'USA'});
            Data=[Population_Europe Population_Aisa Population_USA];
            bar(app.UIAxes,categorie,Data)

I'm able to plot this, but I want to add two things, which I'm currently not able to:

1) Change the colours of the bars -> e.g. Europe = blue, Asia = green and USA =red

2) Add a horizontal line at a certain value across the whole bar plot. Here's a quick example, which does not work in appdesigner:

            hold(app.UIAxes,'on')
            bar(app.UIAxes,xlim,[100 100], 'r','LineWidth',2)

Thank you in advance for your help and have a great day!

Cheers, Christian

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采纳的回答

Kojiro Saito 2019-5-21

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https://ww2.mathworks.cn/matlabcentral/answers/463083-categorical-bar-plot-in-appdesigner-change-colors-and-add-refline#answer_375936

编辑：Kojiro Saito 2019-5-21

在 MATLAB Online 中打开

1) You can set colors on each bar by CData property.

b = bar(app.UIAxes, categorie, Data, 'FaceColor', 'flat');
b.CData = [0 0 1; 0 1 0; 1 0 0];

UPDATED

2) In order to add red horizontal line, yline is the easiest way.

yline(app.UIAxes, 150, 'r', 'LineWidth', 2)
yline(app.UIAxes, 200, 'b', 'LineWidth', 2)

Or alternatively, you can utilize grid, but line color and width is only one for this approach.

% Add holizontal red line using grid
grid(app.UIAxes)
app.UIAxes.XGrid = 'off';
app.UIAxes.Layer = 'top';
app.UIAxes.YTick = 100;
app.UIAxes.GridAlpha = 1;
app.UIAxes.GridColor = 'red';