Extracting element form a table of data

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ADEDAPO ADEGUN 2015-10-6

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https://ww2.mathworks.cn/matlabcentral/answers/247094-extracting-element-form-a-table-of-data

评论： Adam 2015-10-6

Hello, Please what command will I use if I want to extract element form table of table data. E.g if I have 5 by 5 matrix element and I need to read 3 by 3 element located in row 3, row 3, row 4 and column 2, column 3, column 4. Please what command can I use to extract these elements. Thanks

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Answer 1

Adam 2015-10-6

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https://ww2.mathworks.cn/matlabcentral/answers/247094-extracting-element-form-a-table-of-data#answer_194926

在 MATLAB Online 中打开

If by 'table', you mean an array:

result = myArray( 2:4, 2:4 );

will read, for example, the 2nd to 4th rows and 2nd to 4th columns, giving you a 9-by-9 result array.

If you mean an actual 'table' structure then I am less familiar with that, but

doc table

seems to give various examples of manipulating table data.

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ADEDAPO ADEGUN 2015-10-6

If I want to read the first row and last row or first column and last column. That is actually my question Thanks

Adam 2015-10-6

在 MATLAB Online 中打开

result = myArray( [1 end], : );
result = myArray( :, [1 end] );

will give you, respectively, the 1st and last row and the first and last column (assuming you want all columns for each row and all rows for each column)

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