CODEWITHSUNDEEP
matlabsortingvectormatrixplot
Tessa Danger Bamkin
Tessa Danger Bamkin

Reputation: 305

plotting points from matrix on matlab

I have a matrix which shows me the posiions of a knight in a knights tour. I'm looking to find a way of firstly finding the numbers in order and outputting their positions e.g. on a smaller board X

X=[1 3; 4 2]

OUTPUT

A=[1 2 3 4]

b= [1 1; 2 4; 1 2; 1 3]

Something like this where b is the position of the values of A in the matrix

the only way I can think about doing this is using a series function of find (n) where n=1..64 and then concatenating results

I then want to use this information to create a plot of the moves with a line/vector plot but am having difficulty in working out how to do this also.

Thanks, Tessa

Upvotes: 3

Views: 895

Answers (1)

Jonas
Jonas

Reputation: 74940

You can use find to identify the visited board coordinates, followed by sorting them according to the order of the moves.

%# find the visited coordinates
[rows,cols,moveNumber]=find(A);

%# find out how to reorder the positions so that
%# the moves are in the right order
[~,sortIdx] = sort(moveNumber);

%# plot the moves
figure
plot(rows(sortIdx),cols(sortIdx),'-o')

Upvotes: 3

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