Please help me fix my code!

Hi Everyone,

I want to be able to refer to the information of my edit box (called edit_x) throughout my GUI's m file. My code is quite complicated. The idea is that whatever the user enters into the edit box is compared with the already loaded .mat files listed in the listbox (called listbox_x), and only those whose first n letters match those of the characters enterred by the user into the edit box will remain in the list box.

However, every time I try it out, it tells me that my edit_x is undefined.

If anyone could give me any guidance on this I would be extremely grateful.

Thanks,

Rosie

For reference, and to identify if I've done anything else wrong that's caused this error, I'll post my code below;

% --------------------------------------------------------------------

function varargout = listbox_x_CreateFcn(h, eventdata, handles, varargin)

D = dir('*.mat');                   %Scan directory for .mat files
listbox_x_string = {D(:).name};     %Set to display full name of files found
set(h,'String',listbox_x_string);     %Display list of files in ListBox_x

guidata(gcbo,handles)
% --------------------------------------------------------------------

function varargout = edit_x_Callback(h, eventdata, handles, varargin)

edit_x_string = varargin{1};
handles.edit_x_string = edit_x_string;

guidata(gcbo,handles)
% --------------------------------------------------------------------

function varargout = listbox_x_Callback(h, eventdata, handles, varargin)

listbox_x_oldstr = get(h,'String');

n = length(edit_x_string);

match_x = strncmpi(handles.edit_x_string,listbox_x_oldstr,n);

if n >= 1
    if match_x == 0
        set(h,'String',' ');
    elseif match_x >= 1
        set(h,'String',listbox_x_oldstr(match_x));
    end
end

guidata(gcbo,handles)

Answer 1

[Rosie]

In case anyone has the same issue I managed to fix the code by changing it to the following;

% --------------------------------------------------------------------
function varargout = listbox_x_CreateFcn(h, eventdata, handles, varargin)

D = dir('*.mat');                   %Scan directory for .mat files
listbox_x_string = {D(:).name};     %Set to display full name of files found
set(h,'String',listbox_x_string);     %Display list of files in ListBox_x

guidata(gcbo,handles)
% --------------------------------------------------------------------
function varargout = edit_x_Callback(h, eventdata, handles, varargin)

edit_x_string = get(h,'String');

guidata(gcbo,handles)

D = dir('*.mat');
listbox_x_string = {D(:).name};

match_x = strmatch(edit_x_string,listbox_x_string)

set(handles.listbox_x,'String',listbox_x_string(match_x))

guidata(gcbo,handles)

Answer 2

[DEWDROP]

PLEASE HELP TO FIX LINE mdl .

clear

D =[8.3, 4.76, 4.79, 4.24, 3.69]; %m^2/s

t =[91, 180, 365, 730, 1095]; %days

Dref =D(1);%m^2/s

tref =t(1); %days

x=log((tref./t));

y=log((D./Dref));

mdl= fitlm(x,y,'y~x1-1');%linear regression formula

figure(1)

plot(mdl)

xlabel('ln(t_ref/t)')

ylabel('ln(D/D_ref)')

title('m calculation')

grid on

m = table2array(mdl.coefficients(1,1));

time=linspace (0,100,10000)

for i=1:length(time)

Dt(i,1)=Dref/(1-m).*(tref/365/time(i)).^m;

ke=1;

kt=1;

At(i,1)=(tref/365./time(i)).^m;

Dappc(i,1)=ke*Dref*kt*At(i,1);

end

figure(2)

ACI=loglog(time,Dt*365*24*60*60,'r','linewidth',2)

fib=loglog(time,Dappc*365*24*60*60,'m','linewidth',2)

xlabel('time,year')

ylabel ('diffusion coefficient,m^2/s')

ylim([10^-5,10^-2])