To assign to or create a variable in a table, the number of rows must match the height of the table.

Question

Nicolas Sajche 2021-9-9

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https://ww2.mathworks.cn/matlabcentral/answers/1450299-to-assign-to-or-create-a-variable-in-a-table-the-number-of-rows-must-match-the-height-of-the-table

回答： Sulaymon Eshkabilov 2021-9-9

file='Phototransistor.xlsx';

time=(1:60)';

t=table('Size',[60 7],'variableTypes',["double" "double" "string" "double" "string" "double" "string"]);

column_name={'Time','Voltage','Color','BPM','State','Speed'};

f=uifigure('Name','UITable','Position',[700 375 550 425]);

t.Time=time;

t.Voltage=readmatrix(file,'Range','B:B');

t.Color='Red';'Black';'Ground';'Blue';

t.BPM=readmatrix('EKG.xlsx','range','A450:A750');

t.State='Relaxed';'Stressed';

t.Speed=readmatrix('Accelerometer.xlsx','range','B:B');

uit=uitable(f,'Data',t,'Position',[15 10 525 400]);

uit.ColumnWidth={'auto','auto','auto','auto','auto','auto'};

This is my code to create a UITable but I keep getting the same error:

To assign to or create a variable in a table, the number of rows must match the

height of the table.

Can someone help.

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Answer 1

Sulaymon Eshkabilov 2021-9-9

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https://ww2.mathworks.cn/matlabcentral/answers/1450299-to-assign-to-or-create-a-variable-in-a-table-the-number-of-rows-must-match-the-height-of-the-table#answer_784349

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There are some size issues overlooked while assigning the table array. Here are the corrected parts of your code:

...
time=(450:750)';  % Note the size: 'A450:A750'
column_name={'Time','Voltage','Color','BPM','State','Speed', 'Something'}; % Note the how many column names are to be there. It is 7 but not 6 as assigned in your code.
t=table('Size',[numel(time) 7],'variableTypes',["double" "double" "string" "double" "string" "double" "string"], ...
    'VariableNames', column_name);
...