App designer table handling

Question

Karol Lach 2022-9-14

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1805555-app-designer-table-handling

回答： Christopher Stapels 2022-9-19

WindSpeedAppExample.mlapp

Using windspeedexample, I created an app to read data from selected public Thingspeak channel and use it to plot.

I also wanted to add a table to store currently read records, which works, but has one significant problem - data in the table is getting rewritten in the first row. How do I make it so that every new input creates new row?

App is in the attachments in .mlapp form. Sorry for the language, it's in polish but every input is filled so you can see what is going on. If there is no data logging, change channel ID (upper input) to 12397, dropdown to position 2, time intervals (lower position) to 5.

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Karol Lach 2022-9-15

Solved by creating isempty check and creating a loop with 2 tables.

tab = table(time,value,indexvalue);

if isempty(app.UITable.Data) == 1

app.UITable.Data = tab;

end

tab2 = [app.UITable.Data; tab];

app.UITable.Data = tab2;

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Answer 1

Christopher Stapels 2022-9-19

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1805555-app-designer-table-handling#answer_1056740

在 MATLAB Online 中打开

Thanks for showing the result Karol. Im taking your solution and adding it to the answers to help others find it.

Solved by creating isempty check and creating a loop with 2 tables.

tab = table(time,value,indexvalue);
if isempty(app.UITable.Data) == 1
    app.UITable.Data = tab;
end
tab2 = [app.UITable.Data; tab];
app.UITable.Data = tab2;