How to connect points in a plot with a line

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Edgar Dominguez Ugalde
Edgar Dominguez Ugalde el 15 de En. de 2018
Comentada: Edgar Dominguez Ugalde el 15 de En. de 2018
Hi, I'm trying to join some points with a line in a point plot I have created in order to draw the figure shown (ignore the dimensions).
Here's my code so far:
%Data
thta = 60;
L1 = 600;
%Coordinates 1
P1 = [700;-50;0];
P2 = [600;-50;0];
P3 = [600;0;0];
P4 = [600;50;0];
P5 = [700;50;0];
%Coordinates 2
P6 = [500;-70;0];
P7 = [500;0;0];
P8 = [500;70;0];
P9 = [0;-70;0];
P10 = [0;70;0];
%Equation
rotz = [cosd(thta) -sind(thta) 0;sind(thta) cosd(60) 0;0 0 1];
%Final positions 1
pf1 = rotz*P1;
pf2 = rotz*P2;
pf3 = rotz*P3;
pf4 = rotz*P4;
pf5 = rotz*P5;
%Final positions 2
pf6 = rotz*P6;
pf7 = rotz*P7;
pf8 = rotz*P8;
pf9 = rotz*P9;
pf10 = rotz*P10;
% Point Plot
x1 = pf1(1,1);
y1 = pf1(2,1);
x2 = pf2(1,1);
y2 = pf2(2,1);
x3 = pf3(1,1);
y3 = pf3(2,1);
x4 = pf4(1,1);
y4 = pf4(2,1);
x5 = pf5(1,1);
y5 = pf5(2,1);
x6 = pf6(1,1);
y6 = pf6(2,1);
x7 = pf7(1,1);
y7 = pf7(2,1);
x8 = pf8(1,1);
y8 = pf8(2,1);
x9 = pf9(1,1);
y9 = pf9(2,1);
x10 = pf10(1,1);
y10 = pf10(2,1);
figure
g1 = plot(x1,y1,'s')
xlim([-100 800])
ylim([-100 800])
title('Posiciones finales')
hold on
g2 = plot(x2,y2,'s')
plot(x3,y3,'s')
plot(x4,y4,'s')
plot(x5,y5,'s')
plot(x6,y6,'s')
plot(x7,y7,'s')
plot(x8,y8,'s')
plot(x9,y9,'s')
plot(x10,y10,'s')
hold off
Any ideas?
The figure obtained in Matlab is the following:
  2 comentarios
John BG
John BG el 15 de En. de 2018
the points alone are not enough, you have to tell what connected to what points.
John BG
John BG el 15 de En. de 2018
also, do you intend to be able to edit thickness, colour and style like in autocad?

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Respuesta aceptada

Image Analyst
Image Analyst el 15 de En. de 2018
Editada: Image Analyst el 15 de En. de 2018
Use the line() or plot() function
line([x1, x2], [y1, y2], 'Color', 'w');
plot([x1,x2], [y1,y2], 'w-', 'LineWidth', 2);
Or use the annotation() function to draw arrows.
  4 comentarios
Image Analyst
Image Analyst el 15 de En. de 2018
Editada: Image Analyst el 15 de En. de 2018
Well of course it works. I wrote the code for the purple image you showed so I made the lines white. If you plot individual points on a white background, like the code below your sample image, you'll have to make the lines some color other than white, for example red. This works:
line([x3, x4], [y3, y4], 'Color', 'r'); % Line between point 4 and point 5.
plot([x5,x6], [y5,y6], 'r-', 'LineWidth', 2); % Line between point 5 and point 6.
Edgar Dominguez Ugalde
Edgar Dominguez Ugalde el 15 de En. de 2018
Yeah, it works. I wasn't seeing the lines because of the color. Thank you

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