Error in calculation code

Hi there,

i have created a 3 text and a button in gui. once u click on the button, the calculation for the 3 text will be process and the final result will appear. And i wanted to do so 3 times. and the final result will appear at 3 individual box. however i have an error. here's my code :

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global calculationflag;

if calcultionflag ==0

p = str2num(get (handles.load, 'String'));

d = str2num(get (handles.diameter, 'String'));

n = str2num(get (handles.fringe, 'String'));

f = ( (8 * p ) / (pi * d * n));

set(handles.result1, 'String', f);

calculationflag = calculationflag+1;

else if calculationflag ==1

p = str2num(get (handles.load, 'String'));

d = str2num(get (handles.diameter, 'String'));

n = str2num(get (handles.fringe, 'String'));

f = ( (8 * p ) / (pi * d * n));

set(handles.result2, 'String', f);

calculationflag = calculationflag+1;

else if calculationflag ==2

p = str2num(get (handles.load, 'String'));

d = str2num(get (handles.diameter, 'String'));

n = str2num(get (handles.fringe, 'String'));

f = ( (8 * p ) / (pi * d * n));

set(handles.result3, 'String', f);

calculationflag=0;

    end

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Thanks!

[Walter Roberson]

What error do you observe, and on what line?

[sha]

i have edited the command. the 'elseif' need to be in one word. However. after doing so, it didnt work. there is no error at all. but no calculation has been done.

Any suggestion? thanks fr the reply!

Answer 1

[Walter Roberson]

persistent calculationflag
if isempty(calculationflg); calculationflag = 0; end

p = str2num(get (handles.load, 'String'));
d = str2num(get (handles.diameter, 'String'));
n = str2num(get (handles.fringe, 'String'));
f = ( (8 * p ) / (pi * d * n));
fstring = num2str(f);

switch calculationflag
  case 0: set(handles.result1, 'String', fstring);
  case 1: set(handles.result2, 'String', fstring);
  case 2: set(handles.result3, 'String', fstring);
end
calculationflag = mod(calculationflag+1, 3);

[sha]

after executing your codes, i have this error :

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??? Undefined function or variable 'calculationflg'.

Error in ==> New>calculationPushbutton_Callback at 497 if isempty(calculationflg); calculationflag = 0; end

Error in ==> gui_mainfcn at 96 feval(varargin{:});

Error in ==> New at 42 gui_mainfcn(gui_State, varargin{:});

Error in ==> @(hObject,eventdata)New('calculationPushbutton_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

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[José-Luis]

calculationfl a g

[sha]

my bad! after doing so, i could only manage to do 1 time. and has an error after clicking the button fr 2nd times!

this are the error:

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??? Error while evaluating uicontrol Callback

??? One or more output arguments not assigned during call to "set".

Error in ==> New>calculationPushbutton_Callback at 504 case 0: set(handles.result1, 'String', fstring);

Error in ==> gui_mainfcn at 96 feval(varargin{:});

Error in ==> New at 42 gui_mainfcn(gui_State, varargin{:});

Error in ==> @(hObject,eventdata)New('calculationPushbutton_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

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