fscanf
Reads data from a file.
Syntax
- R = fscanf(fid, format)
- [R, count] = fscanf(fid, format)
- [R, count] = fscanf(fid, format, sizeR)
Input argument
- fid - a file descriptor
- format - a string describing the format to used function.
- sizeR - desired dimensions of R.
Output argument
- R - matrix or character vector.
Description
Read data in text from the file specified by the file descriptor fid.
characters encoding uses fopen parameter.
| Value type | format | comment |
|---|---|---|
| Integer | %i | base 10 |
| Integer signed | %d | base 10 |
| Integer unsigned | %u | base 10 |
| Integer | %o | Octal (base 8) |
| Integer | %x | Hexadecimal (lowercase) |
| Integer | %X | Hexadecimal (uppercase) |
| Floating-point number | %f | Fixed-point notation |
| Floating-point number | %e | Exponential notation (lowercase) |
| Floating-point number | %E | Exponential notation (uppercase) |
| Floating-point number | %g | Exponential notation (compact format, lowercase) |
| Floating-point number | %G | Exponential notation (compact format, uppercase) |
| Character | %c | Single character |
| String | %s | Character vector. |
Example
M = rand(3, 2);
fw = fopen([tempdir, 'example_fscanf.txt'], 'wt');
fprintf(fw, "%f %f %f", M);
fclose(fw);
fd = fopen([tempdir, 'example_fscanf.txt'], 'r');
R = fscanf(fd, "%g %g %g");
fclose(fd);
R
See also
History
| Version | Description |
|---|---|
| 1.0.0 | initial version |
Author
Allan CORNET