MATLAB Function Reference |
User-defined extension of save
function for user objects
Syntax
Description
B = saveobj(A)
is called by the MATLAB save
function when object A
is saved to a MAT-file. This call executes the saveobj
method for the object's class, if such a method exists. The return value B
is subsequently used by save
to populate the MAT-file.
When you issue a save
command on an object, MATLAB looks for a method called saveobj
in the class directory. You can overload this method to modify the object before the save operation. For example, you could define a saveobj
method that saves related data along with the object.
Remarks
saveobj
can be overloaded only for user objects. save
will not call saveobj
for a built-in datatype, such as double
, even if @double/saveobj
exists.
saveobj
will be separately invoked for each object to be saved.
A child object does not inherit the saveobj
method of its parent class. To implement saveobj
for any class, including a class that inherits from a parent, you must define a saveobj
method within that class directory.
Examples
The following example shows a saveobj
method written for the portfolio
class. The method determines if a portfolio
object has already been assigned an account number from a previous save
operation. If not, saveobj
calls getAccountNumber
to obtain the number and assigns it to the account_number
field. The contents of b
is saved to the MAT-file.
function b = saveobj(a) if isempty(a.account_number) a.account_number = getAccountNumber(a); end b = a;
See Also
saveas | savepath |
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