Smat

Calling sequence

Parameters

• s11 ...: strings

Description
The Smat data type is the string matrix object, i;e. a two dimensional array in which each entry is a string. Column vectors of strings are considered as m x 1 matrices and row vectors as 1 x n matrices.

Operations on string matrices

• A.redim[m,n] reshape matrix to size mxn. m or n can be set to -1
• A.concatr[B] A = [A,B]
• A.concatd[B] A = [A;B]
• A.perm_elem[p,q[,dim]] permute p and q: elements (default or dim=0), rows (dim=1) or columns (dim=2).

• If I and is J are respectively row and column indices A(I,J) is the submatrix of A with entries in I and j.
• A(I,:) is the submatrix of A with row indices in I.
• A(:,J) is the submatrix of A with comumn indices in I.
• A(:,:) is A
• A(:) is the column matrix obtained by stacking the columns of A.

• If I and is J are row and column indices A(I,J)=B inserts matrix B into matrix A in rows I and columns J.
• A(I,:)=[] removes the rows of A with indices in J.
• A(:,J)=[] removes the columns of A with indices in J.

• smat_create string matrix creation.
• ascii ascii conversion
• catenate string concatenation
• concat string matrices concatenation
• getfile return the contents of a file in a colmun string vector
• isalnum checks for an alphanumeric character
• isalpha checks for an alphabetic character
• isascii checks for 7-bit unsigned char value that fits into the ASCII character set
• isdigit checks for a digit (0 through 9)
• isgraph checks for any printable character except space
• islower checks for a lower-case character
• isprint checks for any printable character including space
• ispunct checks for any printable character which is not a space or an alphanumeric character
• isspace checks for white-space characters
• isupper checks for an uppercase letter
• isxdigit checks for a hexadecimal digits
• length return a numeric matrix filled with lenght of each string od the string matrix
• m2s convert to string matrix
• string convert object to string matrix
• part substring extraction from indices
• putfile write a string matrix in a file in column order mode
• regexp search regular expressions
• regsub substitutions based on regular expression pattern matching
• split string splitting
• strindex  search occurences of a string in a string
• stripblanks removes leading and trailing white-space characters
• strstr locate a substring in a string matrix
• strsubst sub-string substitution in a string matrix
• toupper convert letter to upper case
• tolower convert letter to lower case
• capitalize capitalize strings

See also

Authors jpc, bp