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Is there a convenient way to display a matrix with row and column labels in the Matlab terminal? Something like this:
M = rand(5); displaymatrix(M, {'FOO','BAR','BAZ','BUZZ','FUZZ'}, ... {'ROW1','ROW2','ROW3','ROW4','ROW5'}); %?? yielding:
FOO BAR BAZ BUZZ FUZZ ROW1 0.1622 0.4505 0.1067 0.4314 0.8530 ROW2 0.7943 0.0838 0.9619 0.9106 0.6221 ROW3 0.3112 0.2290 0.0046 0.1818 0.3510 ROW4 0.5285 0.9133 0.7749 0.2638 0.5132 ROW5 0.1656 0.1524 0.8173 0.1455 0.4018 Even better would be something with some ASCII-art niceties:
| FOO BAR BAZ BUZZ FUZZ -----+------------------------------------------------- ROW1 | 0.1622 0.4505 0.1067 0.4314 0.8530 ROW2 | 0.7943 0.0838 0.9619 0.9106 0.6221 ROW3 | 0.3112 0.2290 0.0046 0.1818 0.3510 ROW4 | 0.5285 0.9133 0.7749 0.2638 0.5132 ROW5 | 0.1656 0.1524 0.8173 0.1455 0.4018 
437
A matrix is denoted by [aij]mxn, where i and j represent the position of elements in the matrix, row-wise and column-wise, m is the number of rows and n is the number of columns.
Matrices are most commonly labeled with capital letters such as A, B, or C. Below, you can see a matrix we will refer to as “matrix A“. The numbers within the matrix, are referred to as elements. One way to talk about a specific element is to use a lowercase letter and label it with the row and column of the element.
Matlab has a function called printmat in the Control Systems toolbox. It's in the directory "ctrlobsolete", so we can assume that it is considered "obsolete", but it still works.
The help text is:
>> help printmat printmat Print matrix with labels. printmat(A,NAME,RLAB,CLAB) prints the matrix A with the row labels RLAB and column labels CLAB. NAME is a string used to name the matrix. RLAB and CLAB are string variables that contain the row and column labels delimited by spaces. For example, the string RLAB = 'alpha beta gamma'; defines 'alpha' as the label for the first row, 'beta' for the second row and 'gamma' for the third row. RLAB and CLAB must contain the same number of space delimited labels as there are rows and columns respectively. printmat(A,NAME) prints the matrix A with numerical row and column labels. printmat(A) prints the matrix A without a name. See also: printsys. Example:
>> M = rand(5); >> printmat(M, 'My Matrix', 'ROW1 ROW2 ROW3 ROW4 ROW5', 'FOO BAR BAZ BUZZ FUZZ' ) My Matrix = FOO BAR BAZ BUZZ FUZZ ROW1 0.81472 0.09754 0.15761 0.14189 0.65574 ROW2 0.90579 0.27850 0.97059 0.42176 0.03571 ROW3 0.12699 0.54688 0.95717 0.91574 0.84913 ROW4 0.91338 0.95751 0.48538 0.79221 0.93399 ROW5 0.63236 0.96489 0.80028 0.95949 0.67874 If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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