Making Triangle in matlab

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Wahab Ahmad
Wahab Ahmad 2020-4-30
回答： Image Analyst 2022-7-18
How do I make the triangle without plotting function like that?

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回答（2 个）

KSSV
KSSV 2020-4-30
m = 100;
n = 2*m;
I = zeros(m,n) ;
for i = 1:m-1
idx = (n/2-i):(n/2+i) ;
I(i,idx)= 1 ;
end
imshow(I)
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Wahab Ahmad
Wahab Ahmad 2020-4-30
That code is not works
KSSV
KSSV 2020-4-30
Why it not work? You have to change vertices accordingly.

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Image Analyst
Image Analyst 2022-7-18
Ran in:
You can use poly2mask
x = [100, 200, 300]; % Left vertex, top vertex, right vertex.
y = [300, 100, 300]; % Left vertex, top vertex, right vertex.
mask = poly2mask(x, y, 400, 400);
imshow(mask);
axis on

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