How to connect points in a plot with a line
    70 views (last 30 days)
  
       Show older comments
    
    Edgar Dominguez Ugalde
 on 15 Jan 2018
  
    
    
    
    
    Commented: Edgar Dominguez Ugalde
 on 15 Jan 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:

Accepted Answer
  Image Analyst
      
      
 on 15 Jan 2018
        
      Edited: Image Analyst
      
      
 on 15 Jan 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 Comments
  Image Analyst
      
      
 on 15 Jan 2018
				
      Edited: Image Analyst
      
      
 on 15 Jan 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.
More Answers (0)
See Also
Categories
				Find more on Line Plots in Help Center and File Exchange
			
	Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
