image_number error in matlab loop

Question

can anyone help me? I have a loop as follows:

global im2
axes(handles.axes4);

for i= 1:40

cd(strcat('C:\Users\JerryFarla\Desktop\images test\yale faces\ImageZ\',num2str(i)));
c = imread('1 (1).jpg');

%subplot(222)  
axes(handles.axes4)
imshow(c);

set(handles.image_number,'String',strcat('Processed now --->',num2str(i)))   

end
img=imread('C:\Users\JerryFarla\Desktop\images test\yale faces\ImageZ\1 (*).jpg');
a=img;
axes(handles.axes5)
imshow(img)

my issue is that it gives me the error

??? Reference to non-existent field 'image_number'.

Error in ==> testgui1>pushbutton2_Callback at 270 set(handles.image_number,'String',strcat('Processed now --->',num2str(i)))

Is the error due to my version of matlab (i'm using the R2011a version)? If yes, is there any function with the same purpose in this version of matlab?

Does the handles structure have a field named image_number before the set command is executed? — Tomáš Kratochvíla
You could take a look at the following answer: mathworks.com/matlabcentral/answers/… — Tomáš Kratochvíla
The issue is that you don't have an image_number field in handles — Suever

Pradeep Miriyala Pradeep Miriyala · Accepted Answer · 2016-07-12T13:44:47

Your GUI need to have a uicontrol or a member of name "image_number". You probably don't have this control as part of GUI. If your intention is to create a control named "image_number" dynamically, use function "uicontrol" to do so.

The issue is not due to MATLAB version R2011A.

image_number error in matlab loop

1 Answers