need help with pointer movement on grid
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I have a grid,say 150*150m with each cell 0.5*0.5m making it a grid of 300*300 cells. I want to move pointer in a random arc path such that the pointer covers each cell (cell should be covered completely) in time steps( if that can be included as well) along its path. The pointer dimensions 1*1m (i.e. spanning 2*2cells in either direction). i need help with coding it.
1 个评论
Walter Roberson
2016-12-1
When moving from one location to another, what are the allowed changes in position? For example is it only permitted to move left, right, up, down, by one unit? Or is it permitted to move diagonally by one? Is it permitted to move more than one cell at a time? Is it permitted to move back to where it was immediately previously? Is it permitted to move back to somewhere it has been before? Is each location to be visited exactly once, so the 300*300 grid would be completely covered in exactly 90000 steps?
采纳的回答
KSSV
2016-12-1
clc; clear all ;
% N = 300 ; M = 150 ;
N = 100 ; M = 50 ;
[X1,Y1] = MeshRectanglularPlate(150,150,N,N) ;
[X2,Y2] = MeshRectanglularPlate(150,150,M,M) ;
nel = size(X2,2) ;
Ele = 1:nel ;
for i = 1:nel
% pick one element randomly
ele = randsample(Ele,1) ;
patch(X1,Y1,'w') ;
hold on
patch(X2(:,ele),Y2(:,ele),'r')
hold off
% remove the elemnet picked
Ele = setdiff(Ele,ele) ;
pause(0.5)
end
download the function MeshRectanglularPlate from the link: http://in.mathworks.com/matlabcentral/fileexchange/33731-meshing-a-plate-using-four-noded-elements/content/Plate%20Mesh/MeshRectanglularPlate.m
17 个评论
h b
2016-12-1
KSSV
2016-12-1
which line? It worked fine for me.....did you use the function?
h b
2016-12-1
编辑：Walter Roberson
2016-12-1
h b
2016-12-1
KSSV
2016-12-1
what error? what version you are using?
h b
2016-12-1
KSSV
2016-12-1
YOu have not specified what error it is..you may also try fill instead patch
h b
2016-12-1
KSSV
2016-12-1
What is size of X1 and Y1? Earlier you said two grids are shown and no pointer.
h b
2016-12-1
编辑：Walter Roberson
2016-12-1
KSSV
2016-12-1
There is a error....sizes of X1 and Y1 should be same...same is case with X2 and Y2. Hey, I apoologize, I made changes to the function....you use this function. ;).
h b
2016-12-1
h b
2016-12-1
KSSV
2016-12-1
In the present code, pointer moves randomly..if you want in a path, you have to specify the path first and then follow the path.
h b
2016-12-6
h b
2017-1-13
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