I have a "data.m" file that contains a handful of large arrays that I do not want in my main file. For all intents and purposes, they are in the form
a1 = [1,2,3]
a2 = [3,4,5]
How can I access a1 and a2 from another script? Or should I be putting these in a .mat file? If so, how do I do that?
Heres an easy way:
Inside data.m, output your arrays:
function [a1, a2] = data( )
...
end
You can access these arrays from your "main" function (e.g thefunc.m) like this:
function [ ] = thefunc( )
//say you want to store array a1 into a variable X, and array a2 into variable Y
[X, ~] = data;
[~, Y] = data;
end
Of course, thefunc.m and data.m should be in the same working directory.
a1 = [1,2,3]; a2 = [3,4,5] inside data.m. I tried it and it works. Did the error say at which line of the code it occured at?a1 and a2 are 2d arrays, it will work too. Are you sure you do not have a syntax error? Maybe a missing , or somethingIf the values of the variables are constant, it would be better to store these in MAT files. Also, try to use functions instead of scripts unless it is necessary to use scripts. Scripts define global variables which could lead to inadvertently overwriting variables among many other issues.
Say we have data.m of Yours and a function foo.m that is about to use variables from there.
Turn the data.m into this form:
function[]=data() % defines a function with no output nor input
a1=[1 2 3];
b2='string';
%Your definitions and other code
save('DataFile.mat'); % save EVERY varible used in the code with it's name
Then in foo.m
function[]=foo()
load('DataFile.mat'); % Load all variables saved in DataFile.mat
disp(b2);
You can also prevent temporary variables to be saved with the mandatory ones by deleting them just before save command by clear temp1 temp2
If you want to save some variables, say a1 in one file and other in different file You can use save('DataFile.mat','a1')
If you want to load specific variables You can use load('DataFile.mat','b1')
data.m? Do you mean you want them in your workspace but you don't want the code that creates them in your script? If the first case, then use a mat file, just read the docs ofsave. If the second case then you should be creating them in a function.