How can I create a 2D plot using a parfor loop?
显示 更早的评论
I have some code that works as expected in a for-loop, but I would like to know if I can procude the same results instead using a parfor-loop.
I am new to parfor-loops so please inform me if I am using this featture incorrectly.
This code works as expected and produces an adequate plot:
L1 = 10;
L2 = 5;
L3 = 3;
theta1 = (0:5:90);
theta2 = (0:5:180);
theta3 = (0:5:180);
[THETA1,THETA2] = meshgrid(theta1,theta2);
figure
hold on
for i = 1:length(theta3)
THETA3 = theta3(i);
x = L1*cosd(THETA1) + L2*cosd(THETA1-THETA2) + L3*cosd(THETA1-THETA3);
y = L1*sind(THETA1) + L2*sind(THETA1-THETA2) + L3*sind(THETA1-THETA3);
plot(x,y)
end
hold off
xlabel('x')
ylabel('y')
title('Inverse Kinematic Plot of a 3-Bar Linkage')
Using the parfor-loop the code breaks down and my plot is completly empty:
L1 = 10;
L2 = 5;
L3 = 3;
theta1 = (0:5:90);
theta2 = (0:5:180);
theta3 = (0:5:180);
[THETA1,THETA2] = meshgrid(theta1,theta2);
figure
hold on
parfor i = 1:length(theta3)
THETA3 = theta3(i);
x = L1*cosd(THETA1) + L2*cosd(THETA1-THETA2) + L3*cosd(THETA1-THETA3);
y = L1*sind(THETA1) + L2*sind(THETA1-THETA2) + L3*sind(THETA1-THETA3);
plot(x,y)
end
hold off
xlabel('x')
ylabel('y')
title('Inverse Kinematic Plot of a 3-Bar Linkage')
回答（1 个）
KSSV
2019-3-22
YOu cannot see the plot..but you can save it and late access it.
L1 = 10;
L2 = 5;
L3 = 3;
theta1 = (0:5:90);
theta2 = (0:5:180);
theta3 = (0:5:180);
[THETA1,THETA2] = meshgrid(theta1,theta2);
figure
hold on
parfor i = 1:length(theta3)
THETA3 = theta3(i);
x = L1*cosd(THETA1) + L2*cosd(THETA1-THETA2) + L3*cosd(THETA1-THETA3);
y = L1*sind(THETA1) + L2*sind(THETA1-THETA2) + L3*sind(THETA1-THETA3);
plot(x,y)
saveas(gcf,['Plot' num2str(i) '.fig']);
end
hold off
xlabel('x')
ylabel('y')
title('Inverse Kinematic Plot of a 3-Bar Linkage')
2 个评论
ahmad eldeeb
2021-11-7
what if I want to keep them all in one figure?
O.Hubert
2022-2-15
@ahmad eldeeb add hold on at the end of the plot line. Like this:
plot(x,y); hold on;
类别
在 帮助中心 和 File Exchange 中查找有关 Startup and Shutdown 的更多信息
2019-3-22
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
