# isletter (Matlab function)

True for letters of the alphabet

## Matlab/Scilab equivalent

Matlab | Scilab

    isletter

    No equivalent

## Particular cases

There is no equivalent function to Matlab isletter function in Scilab. However it can be replaced as follows. Using mtlb_isletter will give a prettier code.

## Examples

Matlab | Scilab

    tf = isletter(A)

    // If A is a String matrix:
    tf = ((asciimat(A)>=65) & (asciimat(A)<=90)) | ((asciimat(A)>=97) & (asciimat(A)<=122))
    // If A is not a String matrix:
    tf = zeros(A)