Evaluate if pushbutton is pressed in conditional 'if'

Hi everybody, Im trying to evaluate if a pushbutton is pressed and then plot my data in a UI. Here is the code:

function Results_after_opt()
%Results_after_opt is function that shows the main values obteined after
%the optimization and aproximation of the results
%
%Creation of the figure
fig = figure('units','pixels',...
                  'position',[10 850 265 155],...
                  'menubar','none',...
                  'name','Расчет АХ самолетов - Меню',...
                  'numbertitle','off',...
                  'resize','off');
res_after_opt = guihandles(fig);
%Figure in the center
scrsz = get(0, 'ScreenSize');
pos_act=get(gcf,'Position');
xr=scrsz(3) - pos_act(3);
xp=round(xr/2);
yr=scrsz(4) - pos_act(4);
yp=round(yr/2);
set(gcf,'Position',[xp yp pos_act(3) pos_act(4)]);
%---------------------------------------
%
hfig_res_opt= findobj('Tag','reswopt');
res_opt=guidata(hfig_res_opt);
%
%Components
res_after_opt.smin_m0 = uicontrol('Style','text', ...
                'Units','pixels', ...
                'Position',[5 95 150 25], ...
                'String','min m0');
%
res_after_opt.min_m0=uicontrol('Style','text', ...
                'Units','pixels', ...
                'Position',[160 95 100 25], ...
                'String',res_opt.min_m0);
%
res_after_opt.slz_opt_m0=uicontrol('Style','text', ...
                'Units','pixels', ...
                'Position',[5 65 150 25], ...
                'String','lz opt m0');
%
res_after_opt.lz_opt_m0=uicontrol('Style','text', ...
                'Units','pixels', ...
                'Position',[160 65 100 25], ...
                'String',res_opt.lz_opt_m0);
%
res_after_opt.snu_opt_m0=uicontrol('Style','text', ...
                'Units','pixels', ...
                'Position',[5 35 150 25], ...
                'String','nu opt m0');
%
res_after_opt.nu_opt_m0=uicontrol('Style','text', ...
                'Units','pixels', ...
                'Position',[160 35 100 25], ...
                'String',res_opt.nu_opt_m0);
%
res_after_opt.pb_surf=uicontrol('Style','pushbutton', ...
                'Units','pixels', ...
                'Position',[5 5 125 25], ...
                'String','Surf b effective',...
                'callback',@callback);
res_after_opt.pb_mesh=uicontrol('Style','pushbutton', ...
                'Units','pixels', ...
                'Position',[135 5 125 25], ...
                'String','Mesh b effective',...
                'callback',@callback);
guidata(fig,res_after_opt);
end

And the callback function.

function callback(hObject)
res_after_opt = guidata(hObject);
if res_after_opt.pb_surf==1
    surf(res_opt.topl_ef(:,:));
elseif res_after_opt.pb_mesh==1
    mesh(res_opt.topl_ef(:,:));
end
end

Answer 1

[Jan]

I guess you mean the Value of the objects:

function callback(hObject)
res_after_opt = guidata(hObject);
if res_after_opt.pb_surf.Value == 1
    surf(res_opt.topl_ef);
elseif res_after_opt.pb_mesh.Value == 1
    mesh(res_opt.topl_ef);
end
end

By the way, omit the "(:,:)" in x(:,:), because it wastes time only. x is sufficient and clear already.

[Oscar Espinosa]

I'm still having a problem

Error using Results_after_opt>callback_mors
Too many input arguments.
Error while evaluating UIControl Callback

I changed as you show me. I getting the data from a third window, so with the next function I'm trying to gather the data but the problem seems to be when I press the pushbutton.

function callback(hObject)
res_after_opt = guidata(hObject);
hfig_res_opt= findobj('Tag','reswopt');
res_opt=guidata(hfig_res_opt); 
if res_after_opt.pb_surf.Value == 1
    surf(res_opt.topl_ef);
elseif res_after_opt.pb_mesh.Value == 1
    mesh(res_opt.topl_ef);
end
end

I'm just want to display either a mesh or a surf as a new figure from data that is stored in a different figure.

[Dennis]

I think callback functions need at least 2 input arguments (hObject and event). Try:

   function callback(hObject,~)
   %code
   end

[Jan]

Dennis is right: All callbacks are called with 2 inputs. If you are working with GUIDE you need 3 inputs:

function callback(hObject, EventData, handles)

[Oscar Espinosa]

I already did the changes, and a new trouble appears

Error while evaluating UIControl Callback

Error using mesh (line 83)
Z must be a matrix, not a scalar or vector.

Error in Results_after_opt>callback (line 122)
    mesh(res_opt.topl_ef);

Error while evaluating UIControl Callback

How should I write the code correctly? When I plotted the data from the workspace (no throught UI), I used either the mesh or the surf button located in the instrument panel and everything ran smoothly.

[Oscar Espinosa]

I found the problem about the last question. Thank you Jan and Dennis for the help.