Matlab Save Function For Mat Files

Retrieve the data with load.

Matlab save function for mat files. By default all save operations create version 7 mat files. Save and load parts of variables in mat files. The mat file object does not support evaluating function handles using the m output. Use the matfile function to access matlab variables directly from mat files on disk without loading the full variables into memory.

Mat files are double precision binary matlab format files. When you create a new file using matfile the function creates a version 7 3 mat file that also lets you save variables larger than 2 gb. Save and load workspace variables. Save by itself stores all workspace variables in a binary format in the current directory in a file named matlab mat.

When you create a new file using matfile the function creates a version 7 3 mat file that also lets you save variables larger than 2 gb. When saving a handle object matlab saves a copy of the object not a copy of the handle. However you can save any or all the variables in the current workspace to a mat file mat you can then reuse the workspace variables later during the current matlab session or during another session by loading the saved mat file. The primary advantage of using the matfile function over the load or save functions is that you can process parts of very large data sets that are otherwise too large to fit in memory.

Use the matfile function to access matlab variables directly from mat files on disk without loading the full variables into memory. In this case the default mat file version is 7 3. Name of file specified as a character vector or string scalar. You can save and load parts of variables directly in mat files without loading them into memory using the matfile function.

For example if your mat file contains function handle myfunc the syntax m myfunc attempts to index into the function handle and does not invoke the function. The only exception to this is when you create new mat files using the matfile function. To identify or change the default mat file version access the mat files. Unfortunately v7 3 appears to have some form of compression algorithm embedded saving and loading these v7 3 mat files istaking significant time.

If you do not specify filename the save function saves to a file named matlab mat. Apparently there was a nocompression flag that worked in previous versions of save. If filename has no extension that is no period followed by text and the value of format is not specified then matlab appends mat if filename does not include a full path matlab saves to the current folder.