can't load file.mat into listbox?

Hallo, i've the following code and the problem with it. I load the file.mat into the workspace with a command 'uiimport', but after that there is nothing saved in the variable 'vars'. Is there any other solution to load file.mat into the listbox, so that i can after loading operate the variables from file.mat in the listbox? Here is my code:

function fileload

 uiimport;
 vars = evalin('base','who');
 set(handles.listbox1,'String',vars);

Thanks

Maria

Answer 1

[Titus Edelhofer]

Hi,

whos might read directly from file, i.e.,

vars = whos('-file', 'file.mat');
set(handles.listbox1, 'String', {vars.name});

Titus

Answer 2

[Walter Roberson]

uiimport imports in to the current workspace, not in to the global workspace. If there are local variables with the same name as what it is importing, the local variables will be overwritten. It is not recommended for this situation.

I suggest you use uigetfile() to allow the user to pick the file, and use load() assigning the output to a variable. fieldnames() applied to the variable will tell you the names of the variables that were in the .mat file, and you can save the content of the .mat file for later use using any of the techniques described in http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F

Answer 3

[Maria]

Hallo,

'whos' makes it good. But now i choose the variables from the listbox and, according to the fact that there is nothing in workspace, matlab gives the error:

Undefined function or variable 'KnopfMes1_1'.

'KnopfMes1_1' is the first name of an array in file.mat

Thanks Maria

[Titus Edelhofer]

Hi Maria,

when you pick the variable, the listbox1_Callback is executed. You should load the variable

val = get(hObject, 'value');

str = get(hObject, 'string');

load('file.mat', str{val});

Titus