How to plot 2D Linear Inequality?

5 次查看（过去 30 天）
Omar B.
Omar B. 2021-9-17
评论： Omar B. 2021-9-17
How to plot cond1 and cond2 with the cost in one figure?
[x1,x2]=meshgrid(0:.1:10,0:.1:10);
cond1=x1-x2<=-2;
cond2=-0.3*x1-x2<=-8;
cost=0.4*x1.^2-5*x1+x2.^2-6*x2+50;
figure (1)
contour(x1,x2,cost,10,'linewidth',2)
xlabel('x_{1}');
ylabel('x_{2}');
hold on
...

请先登录，再回答此问题。

采纳的回答

KSSV
KSSV 2021-9-17
Ran in:
[x1,x2]=meshgrid(0:.1:10,0:.1:10);
cond1=x1-x2<=-2;
cond2=-0.3*x1-x2<=-8;
cost=0.4*x1.^2-5*x1+x2.^2-6*x2+50;
figure (1)
contour(x1,x2,cost,10,'linewidth',2)
hold on
contour(x1,x2,cond1,'color','k','linewidth',2)
contour(x1,x2,cond2,'color','r','linewidth',2)
xlabel('x_{1}');
ylabel('x_{2}');
hold on
  6 个评论
显示 4更早的评论
KSSV
KSSV 2021-9-17
Coordinates of contour lines are obtained. Those are c1, c2. These coordinates are row arrays. c1(1,:) means first row which is x -coordinate and c1(2,:) is second row which is y-coordinate.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Surface and Mesh Plots 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by