can someone tell my what does this do please..?? set(gca, 'XTick', [])

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Jonathan
Jonathan 2013-11-27
回答： Image Analyst 2013-11-27
this is the code im using.
axes(handles.axes1); UP = imagesc(imread('UP.jpg')); set(gca, 'XTick',[]); set(gca, 'YTick',[]); set(gca, 'XColor','w'); set(gca, 'YColor','w'); axes(handles.axes2); DOWN = imagesc(imread('DOWN.jpg')); set(gca, 'XTick',[]); set(gca, 'YTick',[]); set(gca, 'XColor','w'); set(gca, 'YColor','w'); set(handles.axes1,'hittest','off'); set(UP,'hittest','off'); set(handles.axes2,'hittest','off'); set(DOWN,'hittest','off');
I don't know what is gca used for. And also I have this part of the code which I don't know what is used for either.
_handles.xy1 = round(get(handles.axes1,'Currentpoint')); x1 = handles.xy1(1,1); y1 = handles.xy1(1,2);_
Sorry if this is a very simple question. This is all new to me.

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回答（2 个）

Jamie
Jamie 2013-11-27
Hi Jonathan,
The command sets the axis tick labels for the current figure. gca gets the axis of the current figure (Get Current Axis) XTick and YTick are the properties in which MATLAB stores the location of the respective tick marks
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Jamie
Jamie 2013-11-27
编辑：Jamie 2013-11-27
handles.axes2 is simply an axis handle i.e.
axis_handle = findobj(gcf,'type','axis')

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Image Analyst
Image Analyst 2013-11-27
set(gca, 'XTick', []) removes the tick marks from the x axis.

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