Re: Hello extracting the coordinates of a data point.

[Doug Stewart]

this should answer your question

clear all;close all;clc;

X=2;

y=1:X;

axe=0:0.6:X;

axe_1=0:1.2:X;

axe_2=0.6:1.2:X;

x=ones(1,length(axe_1));

y=ones(1,length(axe_2));

for jj=1:length(axe_2)

for ii=1:length(axe_1)

  y(jj,:)=axe_2(jj);

  x(ii,:)=axe_1(ii);

  %plot(axe_1,x(ii,:),'*');

plot(-axe_1,x(ii,:),'*',axe_1,-x(ii,:),'*',axe_1,x(ii,:),'*',-axe_1,-x(ii,:),'*');

  hold on

plot(-axe_2,y(jj,:),'o',axe_2,-y(jj,:),'o',axe_2,y(jj,:),'o',-axe_2,-y(jj,:),'o');

  hold on

  end

 end

hold off

LineH = get(gca, 'Children');

x1 = get(LineH, 'XData');

y1 = get(LineH, 'YData');

figure

for k=1:length(x1)

x2(k)=double(x1{k}(1));

x3(k)=double(x1{k}(2));

y2(k)=double(y1{k}(1));

y3(k)=double(y1{k}(2));

endfor

plot(x2,y2,'+')

hold on

plot(x3,y3,'o')

hold off