Efficient way to display a walked path.

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luc il 23 Dic 2014
Risposto: Image Analyst il 23 Dic 2014
I have an object that has coordinates [x,y], the object moves in the x-y plane. The plane is described by a circular set of datapoints, as shown in the figure below.
I wish to display the "path" the object has taken (red) , and the current location (green).
I was thinking of displaying it something like the lower image, but any other way would be usefull too.
Any suggestions? (I'm not asking for any code :), I can figure that out on my own)

Risposta accettata

Image Analyst
Image Analyst il 23 Dic 2014
Assuming you have the (x,y) coordinates of the path, just use plot() and pick a really wide line width.
plot(x, y, 'LineWidth', 10);

Più risposte (1)

per isakson
per isakson il 23 Dic 2014
Modificato: per isakson il 23 Dic 2014
Something looking similar to the upper diagram can be achieved with a couple of transparent pathes (handle graphic objects) on top.
Patches comes with a bit of learning curve. Try fill first.
The lower diagram can be done with a line object on top. See
R2014b came with improved graphic features. The links above ara to R2014b.
The key to "efficient" (fast) is to modify graphic objects, not delete and recreate objects, and not create many thousands of objects.


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