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This MATLAB function reads data from an open text file into column vector A and interprets values in the file according to the format specified by formatSpec.
- Fgets
Number of characters to read from the next line, specified...
- Fgetl
fgetl reads characters using the encoding scheme associated...
- Fread
This MATLAB function reads data from an open binary file...
- Ftell
When you open a file, MATLAB® creates a pointer to indicate...
- Fopen
This MATLAB function opens the file, filename, for binary...
- Fprintf
This MATLAB function applies the formatSpec to all elements...
- Fscanf
The fscanf function reapplies the format throughout the...
- MATLAB & Simulink
This example shows how to generate C code from a MATLAB®...
- Fgets
This example shows how to generate C code from a MATLAB® function that reads data from a file.
Because the MATLAB function readtable is not supported for code generation, this example uses low-level file I/O functions like fopen, fgetl, fscanf, feof, and fclose to open the file, read data, and finally close the file. type my_readtable.m. function T = my_readtable(filename,numRecords) %#codegen. f = fopen(filename,"r");
You are right, fscanf can give you the next integer. However, you need to provide it with a pointer. Therefore, you need an & behind number: fscanf(myFile, "%d", &number); *scanf family of functions also automatically skip whitespace (except when given %c, %[or %n). Your loop with reading file will eventually look like this:
Call the C functions fopen(), fclose(), and fscanf() from the generated code using coder.ceval, and use these functions to read the first line of a text file containing comma-separated values. The MATLAB equivalents of these C functions, fopen, fclose, and fscanf, are supported for code generation.
fscanf. Read formatted data from file. Syntax. A = fscanf(fid,format) [A,count] = fscanf(fid,format,size) Description. A = fscanf(fid,format) reads all the data from the file specified by fid, converts it according to the specified format string, and returns it in matrix A. Argument fid is an integer file identifier obtained from fopen.
This example shows how to generate C code from your MATLAB® code that reads data from a CSV file and stores the data in a table.
