creating a rectangle plot

How can i create this rectangle in matlab?

Answer 1

[Chunru]

p = [0 2 2 3 3 5 5 0 0;
     0 0 1 1 0 0 4 4 0];
plot(p(1,:), p(2,:))

[PA]

Thanks Chunru, And can i use rectangle here

[Chunru]

You can use polygon but not rectangle since it is NOT a rectangle.

[PA]

Chunru can you describe about the coordinate

[Walter Roberson]

top row of p is x coordinates. Bottom row is y coordinates.

[PA]

Thanks, And is there any other method for this to be plot

[Chunru]

You can work out the coordinates (use nan to break up the line).

p = [0 4 nan 6 7 7 0 0 nan 4  6  6 4  4;
     0 0 nan 0 0 5 5 0 nan -1 -1 1 1  -1];
plot(p(1,:), p(2,:)); axis off

Answer 2

[PA]

I need to find the value of Xa,Ya, Xb ,Yband can anyone help me with the algorithm

[Walter Roberson]

it is not clear what information is given? or is it an image that is given?

[PA]

an image is given from there i need to find the value of Xa

[PA]

Xa and Ya are the points of the line from the frontside and xb and Yb are he points of the line on the rear side. i need to derive the formula for Xa ,Ya, Xb, Yb

[Walter Roberson]

please post a sample image that does not have the annotations

Answer 3

[PA]

its a fin which have cordintate Xa,Ya and Xb,Yb

i have to find the formula for the Xa and Ya.

the fins with bold is displayed on the case and the dashed lines are the hidden fins inside the case

[Walter Roberson]

Please post an actual image, not a diagram