SAVE SAVE Save Variables To A File

Usage

Saves a set of variables to a file in a machine independent format.
There are two formats for the function call.  The first is the explicit
form, in which a list of variables are provided to write to the file:

  save filename a1 a2 ...

In the second form,

  save filename

all variables in the current context are written to the file.  The 
format of the file is a simple binary encoding (raw) of the data
with enough information to restore the variables with the load
command.  The endianness of the machine is encoded in the file, and
the resulting file should be portable between machines of similar
types (in particular, machines that support IEEE floating point 
representation).

You can also specify both the filename as a string, in which case
you also have to specify the names of the variables to save.  In
particular

   save('filename','a1','a2')

will save variables a1 and a2 to the file.

Starting with version 2.0, FreeMat can also read and write MAT
files (the file format used by MATLAB) thanks to substantial 
work by Thomas Beutlich.  Support for MAT files in version 2.1
has improved over previous versions.  In particular, classes
should be saved properly, as well as a broader range of sparse
matrices.  Compression is supported for both reading and writing
to MAT files.  MAT file support is still in the alpha stages, so 
please be cautious with using it to store critical 
data.  The file format is triggered
by the extension.  To save files with a MAT format, simply
use a filename with a ".mat" ending.

The save function also supports ASCII output.  This is a very limited
form of the save command - it can only save numeric arrays that are
2-dimensional.  This form of the save command is triggered using

   save -ascii filename var1 var 2

although where -ascii appears on the command line is arbitrary (provided
it comes after the save command, of course).  Be default, the save
command uses an 8-digit exponential format notation to save the values to
the file.  You can specify that you want 16-digits using the

   save -ascii -double filename var1 var2

form of the command.  Also, by default, save uses spaces as the 
delimiters between the entries in the matrix.  If you want tabs instead,
you can use

   save -ascii -tabs filename var1 var2

(you can also use both the -tabs and -double flags simultaneously).

Finally, you can specify that save should only save variables that
match a particular regular expression.  Any of the above forms can be
combined with the -regexp flag:

   save filename -regexp pattern1 pattern2

in which case variables that match any of the patterns will be saved.
