plotting the points near to origin

    X      Y
   18    10
    72    28
    43    28
    43    61
    24    43
    10    55
    22    24
    51    75
    52    75
    21    41
    39    35
     9    31
    30    60
    25    10
    19    37
    55    75
    22    33
    18    61
    31    39
    33    15
    22    24
    42    43
    13    16
    70    46
    70    74

here is my x and y values, if i plot my graph i get it as shown below but i dont my graph with all points of my data

i wanted my graph like this as shown below, only the highlited part which is near to the zero, i want some points like 10-15 values which are near to the point zero from my data, and can i get values the points.

please can you help me to do this, which will be very help full for my execution

thanks

Answer 1

[Rik]

Your data doesn't seem to fit your plots. The code below should give you an idea of how you could do this. You could also define a cutoff distance and show everything below that distance.

X=XY(:,1);Y=XY(:,2);%XY is the array as you posted in your question

dist_to_origin=sqrt(X.^2+Y.^2);
[~,order]=sort(dist_to_origin);
plot(X(order(1:10)),Y(order(1:10)),'o')
axis([0 80 0 80])

%instead of order(1:10) you can also use this:
L=dist_to_origin<=45;
plot(X(L),Y(L),'o')

[sampath kumar punna]

thanks for the help rik