Function Button error : Not enough input arguments.

Question

Rayane 2013-12-25

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/110711-function-button-error-not-enough-input-arguments

评论： Walter Roberson 2013-12-26

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

Hello

I have the following button:

%--------------Button-----------------------
btLinePropsPos = [0.81,0.08,0.12,0.1];
btLineprops = com.mathworks.mwswing.MJButton('Done');
btLineprops.setBorder([]);
btLineprops.setBackground( java.awt.Color.black);
btLineprops.setForeground(java.awt.Color.red)
btLineprops.setFont(java.awt.Font('Vivaldi',java.awt.Font.PLAIN,30))
btLineprops.setCursor(java.awt.Cursor(java.awt.Cursor.HAND_CURSOR));
btLineprops.setFlyOverAppearance(true);
btLineprops.setToolTipText('Create Truss');
[dummy,btContainer] = javacomponent(btLineprops,[0 0 1 1]); %#ok
set(btContainer, 'Units','Norm', 'Position',btLinePropsPos);
set(btLineprops, 'ActionPerformedCallback',@DoneCallback);
set(btContainer, 'Units','Norm', 'Position',btLinePropsPos);
-----------------------------------------

Then I click it : the followiing funtion should be done :

function DoneCallback(hObject, eventdata, handles)
global S
switch S
        case 'Sloped Truss'
            axes(handles.axes2);
              imshow('shadedTruss.jpg');
       case 'Vertical Truss'
             axes(handles.axes2);
             imshow('shadedTruss.jpg');
end
------------------------------

I am having the following error when axes(...) is reached :

*Error using Truss>DoneCallback (line 113)
Not enough input arguments.*

axes2 is created from outside, the problem here seems to be with handles because the variable S was a handles than when I turned it to global it worked but the error wasn't solved

any help ?

thank you

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Rayane 2013-12-25

If I erase axes(handles.axes2), the image appear in a new figure that opens independently from the project ! I want the image to remain in the same project ...

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Answer 1

Walter Roberson 2013-12-26

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/110711-function-button-error-not-enough-input-arguments#answer_119342

在 MATLAB Online 中打开

MATLAB never automatically passes handles to callbacks. GUIDE goes to the trouble of adding the handles parameter by setting the callback to a string that when executed fetches the handles and passes the two automatic parameters and the handles as well.

If you know that the button is on the same figure as the main gui, then code it with only two parameters, and then as the first thing in the callback do

handles = guidata(hObject);

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Walter Roberson 2013-12-26

在 MATLAB Online 中打开

As some temporary diagnostic code, before the imshow() call, add

fprintf(1, 'axes2 is %.16f, handle? %f, figure %.16f\n', h.axes2, ishandle(h.axes2), ancestor(h.axes2, 'figure'));

and after the imshow() add

drawnow()

and then run and tell us what the output is.

Rayane 2013-12-26

Thanks :)

Result :

a2 is 30.0292968750000000, handle? 1.000000, figure 201.0070800781250000

---------------------------------------

Everything works smoothly but nothing appears ! I'm thinking of creating the axes within the code and not from outside because it doesn't appear at all ... but I forgot how to define it 0_0 !

Any help?

a2=uicontrol(....) ?

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Answer 2

Rayane 2013-12-26

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/110711-function-button-error-not-enough-input-arguments#answer_119358

在 MATLAB Online 中打开

Problem solved Thank you

the problem was with hAxes

I erased and everything worked correctly

but an empty figure still appears !

here's the code

---------------------

img=imread('shadedTruss.jpg');

[M, N, C]=size(img);

set(h.a2,'units','pixels','visible','on','Position',[37 -280 N+237 M+1000],'box','off','tickdir','out','XLimMode','manual','XLim',[0 10],'YLimMode','manual','YLim',[0 1],'ydir','reverse');

imshow(img,'parent', h.a2);

set(h.a2, 'ButtonDownFcn',@buttonDownCallback)