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how to plot mouse movment without missing any point

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chhaya gohel
chhaya gohel 2015-1-29
评论： chhaya gohel 2015-1-30
Hii every one I need help In my project I am ploting mouse movment on x and y axes. But in that some points misses..
This is how I am using plot..
p = get(h_axes,'CurrentPoint');
x = p(1,1);
y = p(1,2);
x_pen = [x_pen x];
y_pen = [y_pen y];
plot( h_axes,[x_pen(end-1) x],[y_pen(end-1) y]','b.-', ...
'MarkerEdgeColor','k', 'MarkerFaceColor','b', ...
'MarkerSize',10, 'Tag','TRAJECTORIA' );
I am devloping pen like tool which in which I want to plots mouse tracing continously but some points misses,,.. Is there any way to solve this..
  2 个评论
per isakson
per isakson 2015-1-29
编辑：per isakson 2015-1-29
  • Is this code inside a loop?
  • Which Matlab release?
  • Is&nbsp hold on ?
  • Only the two most recent points are displayed. Is that by intent?
chhaya gohel
chhaya gohel 2015-1-30
sir i am capturing mouse movment from mouse button down to next up event.
so this code is in WindowButtonMotionFcn@movment where movment is my function for capturing and plotting co-ordinates..
hold is on
and not just two but all the points of mouse movment is going to be plot.. but the problem is some points misses during this plot ..

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回答（1 个）

Image Analyst
Image Analyst 2015-1-30
If you have the Image Processing Toolbox, how about using imfreehand()? Demos attached.
  1 个评论
chhaya gohel
chhaya gohel 2015-1-30
thank you sir.. now with this code i can add the points with interpolation..
but my problem is still there..
sir actully i am capturing mouse movment and same time plotting it..
so when x and y co ordinate Reaptes it will be taken as a junction point. So I need to get the points without missing any of them..
Suppose
X -> 1.2 1.3 1.5 1.6
y->1.4,1.6,1.7,1.8
here in x 1.4 and in y 1.5 in missing so I will not get continouse
plotting and that’s why I am not getting reaptes points even if I draw in such way that points get reapted..
so is there any way to add this points without distrbing the existing point..
i can not add points dynamically , it is very time consuming anf the size of x and y changes with my free hand drawing so how to solve it

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