MATLAB: Unique elliptic curve points

ordered pair selectionunique elliptic pointunique pointunique point selection

I have few points (0,8),(0,64),(28,1)(28,66),(9,47)(9,20),(54,20)(54,47),(21,10),(21,51)

Is there any matlab command which checks the x coordinate and select only unique point (based on x coordinate)

e.g (0,8),(28,66)(9,47),(54,20),(21,10)

Best Answer

use UNIQUE command

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MATLAB: Is there any code or command to seperately display all the points of right_side = mod(a.^3+148*a+225,5003); as defined in code given below

points(:,2).'

MATLAB: Table having entries as points of elliptic curves

I assume you have 123387 (x,y) points, want to filter out points with the same x coordinate (pick one randomly for each x value), and then store it an appropriate table such that each cell contains an (x,y) tuple. You can first convert the matrix to a table, which would make life easier. The following might help:

mat = randi(100,100,2); %sample points
a = array2table(mat);
a = sortrows(a);
A = table2array(a);
[B, ia] = unique(A(:,1));
C = A(ia,2);
D = [B C];
%now you have your unique points, insert them into your m x n table as required

Best Answer

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Related Question

MATLAB: Is there any code or command to seperately display all the points of right_side = mod(a.^3+148*a+225,5003); as defined in code given below