[n, v_1,..., v_m] = mfscanf([niter,]fd, format)
L = mfscanf([niter,] fd,format)

[n, v_1,..., v_m] = mscanf([niter,] format)
L = mscanf([niter,]format)

[n, v_1,..., v_m] = msscanf([niter,]str, format)
L = msscanf([niter,] str, format)

Arguments

format

a Scilab string describing the format to use to write the remaining operands. The format operand follows, as close as possible, the C printf format operand syntax as described in scanf_conversion.

fd

a positive integer: a file descriptor returned by the function mopen. The value -1 refers to the last opened file.

str

a Scilab string or string vector.

niter

an integer: the number of times the format to be used.

n

an integer: the number of data read or -1 if EOL has been encountered before any datum has been read.

v_i

Each function reads characters, interprets them according to a format, and stores the results in its output arguments. If more than n output arguments are provided, the last ones v_n+1, ..., v_m are set to empty matrices.

L

if all data are homogeneous they are stored in a unique vector which is returned, otherwise subsequences of same data type are stored in matrices and a mlist (with type cblock) containing all the built matrices is returned.

Description

The mfscanf function reads characters from the stream fd.

The mscanf function reads characters from Scilab window.

The msscanf function reads characters from the Scilab string str.

The niter optional argument specifies how many time the format has to used. One iteration produces one line in the output matrix. If niter==-1 the function iterates up to the end of file. The niter default value is 1.

Comments about precision:

mfscanf is based on C function fscanf. If you use '%f', '%g', '%e' as format your data will be cast to float and returned in a Scilab variable.

If this Scilab variable is a double then you can have some precision errors. In this case, it is better to use '%lg' format.

Examples

See also

• mclose — closes opened files
• meof — checks if end of file has been reached
• mfprintf — converts, formats, and writes data to a file
• fprintfMat — writes a matrix in a file
• fscanfMat — reads a matrix from a text file
• mget — parses numbers in a binary file and returns them as decimals
• mgetstr — reads a character string from a file
• mopen — opens files in Scilab
• mprintf — converts, formats, and writes data to the main scilab window
• mput — writes byte or word in a given binary format
• mputstr — write a single text in an open file
• mseek — sets current position in a binary file
• mtell — Returns the offset of the current byte relative to the beginning of a file
• mdelete — deletes file(s)
• scanf_conversion — mscanf, msscanf, mfscanf conversion specifications