Stores all workspace variables in the current directory in filename.mat. They can also be manipulated by other programs external to MATLAB. They can be created on one machine and later read by MATLAB on another machine with a different floating-point format, retaining as much accuracy and range as the different formats allow. MAT-files are double-precision, binary, MATLAB format files. You should specify the permission to write or append, such as 'w' or 'a'.Īfter processing the file, you need to close it with fclose(fid) function.Save (MATLAB Functions) MATLAB Function ReferenceĪs an alternative to the save function, select Save Workspace As from the File menu in the MATLAB desktop, or use the Workspace browser.īy itself, stores all workspace variables in a binary format in the current directory in a file named matlab.mat. By default, fopen opens a file for read-only access. For these purposes, MATLAB provides the low-level fprintf function.Īs in low-level I/O file activities, before exporting, you need to open or create a file with the fopen function and get the file identifier. However, you may need to create other text files, including combinations of numeric and character data, nonrectangular output files, or files with non-ASCII encoding schemes. Exporting Data to Text Data Files with Low-Level I/O You can open the diary file in a text editor. Optionally, you can give the name of the log file, say − The diary function creates an exact copy of your session in a disk file, excluding graphics. MATLAB executes the above statements and displays the following result. Create a script file and type the following code − The following example demonstrates the concept. Where, my_data.out is the delimited ASCII data file created, num_array is a numeric array and dlm_char is the delimiter character. Syntax for using the dlmwrite function is −ĭlmwrite('my_data.out', num_array, 'dlm_char') Where, my_data.out is the delimited ASCII data file created, num_array is a numeric array and −ascii is the specifier. Using the save function and specifying the -ascii qualifier There are two ways to export a numeric array as a delimited ASCII data file − MEX-file to access your C/C++ or Fortran routine that writes to a particular text file format.Īpart from this, you can also export data to spreadsheets. Specialized ASCII file using low-level functions such as fprintf. Rectangular, delimited ASCII data file from an array.ĭiary (or log) file of keystrokes and the resulting text output. You can create the following type of files − For this, MATLAB provides several data export options. MATLAB allows you to use your data in another application that reads ASCII files. Data export (or output) in MATLAB means to write into files.
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