Replacing numerical values in table with string

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Emu
Emu 2024-3-22
编辑： Stephen23 2024-3-22
I have a column of numerical data (all 2 digit) which I want to replace with a string.
This is my code which doesn't work. I would like the data to read e.g. 'voc_15'.
for b=1:size(type_data_table,1)
type_data_table.voc_type(b) = ['voc_', num2str(type_data_table{b, 'voc_type'})];
end

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回答（1 个）

Stephen23
Stephen23 2024-3-22
编辑：Stephen23 2024-3-22
Ran in:
This is MATLAB, so forget about using a loop like that. Either replace the entire column at once or use e.g.:
https://www.mathworks.com/help/matlab/ref/table.convertvars.html
For example:
T = array2table(randi(99,7,3))
T = 7x3 table
Var1 Var2 Var3 ____ ____ ____ 2 32 52 69 60 82 70 4 70 70 30 3 45 43 62 3 99 36 55 16 75
T.Var2 = "voc_"+T.Var2
T = 7x3 table
Var1 Var2 Var3 ____ ________ ____ 2 "voc_32" 52 69 "voc_60" 82 70 "voc_4" 70 70 "voc_30" 3 45 "voc_43" 62 3 "voc_99" 36 55 "voc_16" 75

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