MATLAB: Truble with LOAD in GUI

loadmatlab gui

Hi, I have problem with loading variables to worksapace using GUI. What I want to do is that when I press the button, open dialog pops up and I select *.mat file, which I created earlier. To this point everything works fine. Name of the file is assigned to a variable. After that I do not realy know what to do. I know, that I simply cannot use load(variable). But even if I tried some modification with assignin and evalin, I sitll can get those variables stored in *.mat file to workspace.

Here is the CallBack function:

function open_menubutton_callback(u,t)

              file = uigetfile('*.mat')
              load(file,'*.mat')

Any sugestions, what should I add or change?

Best Answer

Hi,

one suggestion :

[FileName,PathName] = uigetfile('*.mat');
evalin('base',sprintf('load(''%s'')',fullfile(PathName,FileName)))

Related Solutions

MATLAB: Little truble with ‘diff’

The MATLAB numeric diff function produces the difference of matrix or vector elements: [x(2)-x(1),x(3)-x(2),...] so if there is only one element in the argument you give it, it will return the empty array. It also returns a vector one element shorter than the argument vector. (The Symbolic Math Toolbox diff function calculates the symbolic derivative of its argument.)

If you want to take the numeric derivative, use the gradient function.

The derivative of 0 or any other constant will of course be 0.

MATLAB: How to to get the name of a file.mat when i load it

You can use something like uigetfile

fileName = uigetfile('*.mat');
load(fileName)
filename = filename(1:end-4)

Or alternatively, you can do some batch processing doing something like:

dirinf = dir('*.mat');
nfiles = length(dirinf);
for n = 1:nfiles
  infile = dirinf(n).name; % extract one file name from struct
  load(infile) % load the data
  infile = infile(1:end-4);
end

Best Answer

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MATLAB: Little truble with ‘diff’

MATLAB: How to to get the name of a file.mat when i load it

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