how to Number the data points in the scatter plot – in increasing order of X

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like this . how to get this plot (need to know how to write the matlab code)
x=[2.6498, 5.4147, 7.7189, 7.9493, 7.2581, 47.5806, 44.1244, 78.4562, 73.3871, 74.3088, 91.8203, 96.659, 95.9677, 36.9816, 35.1382, 35.5991, 40.2074, 16.4747, 9.7926, 68.0876];
y=[11.4035, 7.3099, 14.9123, 95.0292, 85.6725, 91.5205, 82.1637, 13.7427, 14.3275, 27.193, 183.9181, 177.4854, 192.1053, 157.0175, 163.4503, 175.731, 172.2222, 106.1404, 114.9123, 123.6842];

Respuesta aceptada

Alan Stevens
Alan Stevens el 21 de Abr. de 2021
Here's one way:
x=[2.6498, 5.4147, 7.7189, 7.9493, 7.2581, 47.5806, 44.1244, 78.4562, 73.3871, 74.3088, 91.8203, 96.659, 95.9677, 36.9816, 35.1382, 35.5991, 40.2074, 16.4747, 9.7926, 68.0876];
y=[11.4035, 7.3099, 14.9123, 95.0292, 85.6725, 91.5205, 82.1637, 13.7427, 14.3275, 27.193, 183.9181, 177.4854, 192.1053, 157.0175, 163.4503, 175.731, 172.2222, 106.1404, 114.9123, 123.6842];
[x, I] = sort(x);
y = y(I);
figure
plot([0 100 100 0 0],[0 0 200 200 0],'k'), grid
hold on
for n = 1:numel(x)
text(x(n),y(n),num2str(n))
end
xlabel('x'), ylabel('y')
title('Scatter plot')
  2 comentarios
Steven Lord
Steven Lord el 21 de Abr. de 2021
There's no need to loop in this scenario.
x=[2.6498, 5.4147, 7.7189, 7.9493, 7.2581, 47.5806, 44.1244, 78.4562, 73.3871, 74.3088, 91.8203, 96.659, 95.9677, 36.9816, 35.1382, 35.5991, 40.2074, 16.4747, 9.7926, 68.0876];
y=[11.4035, 7.3099, 14.9123, 95.0292, 85.6725, 91.5205, 82.1637, 13.7427, 14.3275, 27.193, 183.9181, 177.4854, 192.1053, 157.0175, 163.4503, 175.731, 172.2222, 106.1404, 114.9123, 123.6842];
[x, I] = sort(x);
y = y(I);
text(x, y, string(1:numel(x)));
axis([min(x), max(x), min(y), max(y)])

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