Is there a load if statement or similar in matlab, way to save workspace variable's seperate mat files?

I want to only load a mat file if it isn't loaded. Is there a way to tell if it is loaded?

Is there a way to store every workspace variable as its own mat file by chance?

Answer 1

[Jan]

This creates a list of currently defined variables:

List = who;

Then omit ans:

List(strcmp(List, 'ans')) = [];

And save the others:

for k = 1:length(List)
  save(List{k});
end

Then this bunch of files can be loaded without overwriting existing variables:

matList = dir('*.mat');
List = who;
for k = 1:length(matList)
  name = matList(k).name;
  if ~any(strcmp(name, List))
    load(name);
  end
end

But I would avoid this consequently: 1. load without catching the input to a variable is prone to errors. 2. The debugging of your program will be impeded by this method, because it conceals the source of the values.