MATLAB Programming

Saving and Loading MAT-Files
whos -file newstruct
Name Size Bytes Class
a 1x1 8 double array
b 1x2 158 cell array
c 1x6 12 char array
Or save only selected fields using -struct and specifying each field name:
save newstruct.mat -struct S a c;
whos -file newstruct
Name Size Bytes Class
a 1x1 8 double array
c 1x6 12 char array
Appending to an Existing File
You can add new variables to those already stored in an existing MAT-file by
using save -append. When you append to a MAT-file, MATLAB first looks
in the designated file for each variable name specified in the argument list,
or for all variables if no specific variable names are specified. Based on that
information, MATLAB does both of the following:
• For each variable that already exists in the MAT-file, MATLAB overwrites
its saved value with the new value taken from the workspace.
• For each variable not found in the MAT-file, MATLAB adds that variable to
the file and stores its value from the workspace.
Note Saving with the -append option does not append additional elements to
any arrays that are already saved in the MAT-file.
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