How to plot a triangle with functions in matlab

Does this code work

xIN = 10;
yIN = 5;

xValuesArray = [];
yValuesArray = [];
for i=1:3
    [xValuesArray(i) , yValuesArray(i)] = get2();
end
v(:,1)= xValuesArray'
v(:,2)= yValuesArray'
polyin =  polyshape(v)
p = perimeter(polyin)
a = polyarea(xValuesArray, yValuesArray)
figure
hold on
plot([xValuesArray(1) xValuesArray(2)],[yValuesArray(1) yValuesArray(2)], ...
    [xValuesArray(2) xValuesArray(3)],[yValuesArray(2) yValuesArray(3)], ...
    [xValuesArray(3) xValuesArray(1)],[yValuesArray(3) yValuesArray(1)])

function [getX, getY] = get2()
getX = input("Give me a value for x\n");
getY = input("Give me a value for y\n");
end

Answer 1

[DGM]

Using a bunch of input() calls has to be the most tedious and cumbersome way of getting a point list, but I suppose it works.

Also, since you created a polyshape, you can just plot it. You can also just get its area instead of using polyarea().

% a pointlist
xy = [0 0; 1 0; 0 1];

polyin = polyshape(xy);
p = perimeter(polyin)

p = 3.4142

a = area(polyin)

a = 0.5000

plot(polyin)

Answer 2

[Animesh]

Hi Chloe,

It has become really simple these days to quicky visulaize and implement our ideas through AI chat playground (https://in.mathworks.com/matlabcentral/playground/new).

I was able to implement your query with just one line. Attaching the screenshot for your reference:

Do check out the new MATLAB AI Chat Playground.

I hope this helps!

Animesh