i got error on running roughnessGUI

i get this error can somebody help?

Brace indexing is not supported for variables of this type.

Error in roughnessGUI>open_image_Callback (line 73)

image=imread(char(filename{1}));

Error in gui_mainfcn (line 95)

feval(varargin{:});

Error in roughnessGUI (line 41)

gui_mainfcn(gui_State, varargin{:});

Error in

matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)roughnessGUI('open_image_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating Menu Callback.

Answer 1

[Mehmed Saad]

Error in this line

image=imread(char(filename{1}));

it looks like filename is a variable of type char or some other but not a cell. if filename is

filename = 'C\User\PPC\Downloads\Im.png';

then

filename{1}
Brace indexing is not supported for variables of this type.

because filename is a char not a cell, now convert it to cell

filename = {'C\User\PPC\Downloads\Im.png'};

then

filename{1}
ans =

    'C\User\PPC\Downloads\Im.png'

To save multiple filename in variable filename

    filename = {'C\User\PPC\Downloads\Im.png','C\User\PPC\Downloads\Re.png'};

Now you can use

    iimage=imread(char(filename{1}));