Filtering Table in app designer

Question

Kyle Koutonen 2021-2-28

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/758319-filtering-table-in-app-designer

回答： Deepak 2024-8-29

I have a table in app designiner and I adding a feature to filter the data and delter it if it's over a selected value, but with the loop i made it only deletes one of the last value that is taken into the rowsdelt variable? am I just storing the rows wrong I bet its s simple fix I'm just stuck.

Filter=app.CutOffValueEditField.Value;
n=size(app.t,1);
k=1
if(app.LowPassButton.Value)
    for i=1:n
        if app.UITable3.Data(i,app.ColumnNumberbeingevalulatedEditField.Value)>=Filter
            rowsdelt(1,k)=i   
        end
    end
    app.UITable3.Data(rowsdelt,:)=[];

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Answer 1

Deepak 2024-8-29

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/758319-filtering-table-in-app-designer#answer_1506904

在 MATLAB Online 中打开

Hi @Kyle Koutonen, it is my understanding, that you have created a table in the app designer, and you want to filter the table and delete the rows that are over a selected value. However, the loop you have written deletes only the last row and not all the required rows.

Upon investigation of the code, the issue seems to be that "k" is not being incremented in the for loop. This results in only the last row index being stored in "rowsdelt". Also, the variable "rowsdelt" needs to be initialized properly before the “for loop” to store the values.

Here is the updated MATLAB code with changes:

Filter = app.CutOffValueEditField.Value; 
n = size(app.t, 1); 
k = 1;  
rowsdelt = []; % Initialize rowsdelt as an empty array 
if app.LowPassButton.Value 
    for i = 1:n 
        if app.UITable3.Data(i, app.ColumnNumberbeingevalulatedEditField.Value) >= Filter 
            rowsdelt(1, k) = i; % Store the index of the row to delete 
            k = k + 1; % Increment k to store the next row index 
        end 
    end 
    app.UITable3.Data(rowsdelt, :) = []; 
end 