Store intersection point - Matlab
How can I store the intersection points of a polyshape and a line so I can plot it?
Script (source):
clc;
clear;
close all;
poly1 = polyshape([0.5 0 1 1.5],[1 0 0 2]);
lineseg = [0.5 0.5; 2 2];
[in,out] = intersect(poly1,lineseg);
plot(poly1)
hold on
plot(in(:,1),in(:,2),'b',out(:,1),out(:,2),'r')
matlab polygon intersection
asked Nov 15 '18 at 18:16
janejane
697
add a comment |
How can I store the intersection points of a polyshape and a line so I can plot it?
Script (source):
clc;
clear;
close all;
poly1 = polyshape([0.5 0 1 1.5],[1 0 0 2]);
lineseg = [0.5 0.5; 2 2];
[in,out] = intersect(poly1,lineseg);
plot(poly1)
hold on
plot(in(:,1),in(:,2),'b',out(:,1),out(:,2),'r')
matlab polygon intersection
asked Nov 15 '18 at 18:16
janejane
697
You've copy-pasted code from here: mathworks.com/help/matlab/ref/… -- Please don't forget to attribute.
– Cris Luengo
Nov 15 '18 at 18:23
Do you understand the meaning of thatplotcommand? It is plotting lines between the points were thelinesegintersectspoly1. Thus, you have those points right there ininand/orout.
– Cris Luengo
Nov 15 '18 at 18:24
I do not want to do a mistake but is xInter = in(1,1); yInter = in(1,2); scatter(xInter,yInter)
– jane
Nov 15 '18 at 18:36
add a comment |
How can I store the intersection points of a polyshape and a line so I can plot it?
Script (source):
clc;
clear;
close all;
poly1 = polyshape([0.5 0 1 1.5],[1 0 0 2]);
lineseg = [0.5 0.5; 2 2];
[in,out] = intersect(poly1,lineseg);
plot(poly1)
hold on
plot(in(:,1),in(:,2),'b',out(:,1),out(:,2),'r')
matlab polygon intersection
asked Nov 15 '18 at 18:16
janejane
697
How can I store the intersection points of a polyshape and a line so I can plot it?
Script (source):
clc;
clear;
close all;
poly1 = polyshape([0.5 0 1 1.5],[1 0 0 2]);
lineseg = [0.5 0.5; 2 2];
[in,out] = intersect(poly1,lineseg);
plot(poly1)
hold on
plot(in(:,1),in(:,2),'b',out(:,1),out(:,2),'r')
matlab polygon intersection
matlab polygon intersection
asked Nov 15 '18 at 18:16
janejane
697
asked Nov 15 '18 at 18:16
janejane
697
edited Nov 17 '18 at 17:16
jane
asked Nov 15 '18 at 18:16
janejane
697
asked Nov 15 '18 at 18:16
janejane
697
asked Nov 15 '18 at 18:16
janejane
697
697
You've copy-pasted code from here: mathworks.com/help/matlab/ref/… -- Please don't forget to attribute.
– Cris Luengo
Nov 15 '18 at 18:23
Do you understand the meaning of thatplotcommand? It is plotting lines between the points were thelinesegintersectspoly1. Thus, you have those points right there ininand/orout.
– Cris Luengo
Nov 15 '18 at 18:24
I do not want to do a mistake but is xInter = in(1,1); yInter = in(1,2); scatter(xInter,yInter)
– jane
Nov 15 '18 at 18:36
add a comment |
You've copy-pasted code from here: mathworks.com/help/matlab/ref/… -- Please don't forget to attribute.
– Cris Luengo
Nov 15 '18 at 18:23
Do you understand the meaning of thatplotcommand? It is plotting lines between the points were thelinesegintersectspoly1. Thus, you have those points right there ininand/orout.
– Cris Luengo
Nov 15 '18 at 18:24
I do not want to do a mistake but is xInter = in(1,1); yInter = in(1,2); scatter(xInter,yInter)
– jane
Nov 15 '18 at 18:36
You've copy-pasted code from here: mathworks.com/help/matlab/ref/… -- Please don't forget to attribute.
– Cris Luengo
Nov 15 '18 at 18:23
You've copy-pasted code from here: mathworks.com/help/matlab/ref/… -- Please don't forget to attribute.
– Cris Luengo
Nov 15 '18 at 18:23
Do you understand the meaning of that
plot command? It is plotting lines between the points were the lineseg intersects poly1. Thus, you have those points right there in in and/or out.– Cris Luengo
Nov 15 '18 at 18:24
Do you understand the meaning of that
plot command? It is plotting lines between the points were the lineseg intersects poly1. Thus, you have those points right there in in and/or out.– Cris Luengo
Nov 15 '18 at 18:24
I do not want to do a mistake but is xInter = in(1,1); yInter = in(1,2); scatter(xInter,yInter)
– jane
Nov 15 '18 at 18:36
I do not want to do a mistake but is xInter = in(1,1); yInter = in(1,2); scatter(xInter,yInter)
– jane
Nov 15 '18 at 18:36
add a comment |
1 Answer
1
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Given that in contains the points forming line segments inside the polygon, and out contains the points forming line segments outside the polygon, I would say that any point that is in both in and out should be an intersection point.
To find these common points, use this other intersect function with the 'rows' option:
pts = intersect(in, out, 'rows');
scatter(pts(:,1), pts(:,2));
answered Nov 15 '18 at 18:36
Cris LuengoCris Luengo
21.3k52250
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Given that in contains the points forming line segments inside the polygon, and out contains the points forming line segments outside the polygon, I would say that any point that is in both in and out should be an intersection point.
To find these common points, use this other intersect function with the 'rows' option:
pts = intersect(in, out, 'rows');
scatter(pts(:,1), pts(:,2));
answered Nov 15 '18 at 18:36
Cris LuengoCris Luengo
21.3k52250
add a comment |
Given that in contains the points forming line segments inside the polygon, and out contains the points forming line segments outside the polygon, I would say that any point that is in both in and out should be an intersection point.
To find these common points, use this other intersect function with the 'rows' option:
pts = intersect(in, out, 'rows');
scatter(pts(:,1), pts(:,2));
answered Nov 15 '18 at 18:36
Cris LuengoCris Luengo
21.3k52250
add a comment |
Given that in contains the points forming line segments inside the polygon, and out contains the points forming line segments outside the polygon, I would say that any point that is in both in and out should be an intersection point.
To find these common points, use this other intersect function with the 'rows' option:
pts = intersect(in, out, 'rows');
scatter(pts(:,1), pts(:,2));
answered Nov 15 '18 at 18:36
Cris LuengoCris Luengo
21.3k52250
Given that in contains the points forming line segments inside the polygon, and out contains the points forming line segments outside the polygon, I would say that any point that is in both in and out should be an intersection point.
To find these common points, use this other intersect function with the 'rows' option:
pts = intersect(in, out, 'rows');
scatter(pts(:,1), pts(:,2));
answered Nov 15 '18 at 18:36
Cris LuengoCris Luengo
21.3k52250
answered Nov 15 '18 at 18:36
Cris LuengoCris Luengo
21.3k52250
answered Nov 15 '18 at 18:36
Cris LuengoCris Luengo
21.3k52250
answered Nov 15 '18 at 18:36
Cris LuengoCris Luengo
21.3k52250
21.3k52250
add a comment |
add a comment |
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You've copy-pasted code from here: mathworks.com/help/matlab/ref/… -- Please don't forget to attribute.
– Cris Luengo
Nov 15 '18 at 18:23
Do you understand the meaning of that
plotcommand? It is plotting lines between the points were thelinesegintersectspoly1. Thus, you have those points right there ininand/orout.– Cris Luengo
Nov 15 '18 at 18:24
I do not want to do a mistake but is xInter = in(1,1); yInter = in(1,2); scatter(xInter,yInter)
– jane
Nov 15 '18 at 18:36