Hi, I have a task to write a function that asks the user for the coordinates of a triangle and I have to calculate the distance between two points. I have to find area too.

function d = calculateDistance(x1, y1, x2, y2)

%Purpose: Calculates the distance between two points of a triangle

% d = calculateDistance(x1, y1, x2, y2)

d = sqrt((x2 - x1)^2 + (y2 - y1)^2);

end

[Pranav]

This is what I have written, and I am getting an error as follows:

Not enough input arguments.

Error in calculateDistance (line 4)

d = sqrt((x2 - x1)^2 + (y2 - y1)^2);

Please can someone help me resolve this issue.

Thanks.

Answer 1

[Cris LaPierre]

Show us the code you are using to call your function as well. Based on the error message, you are not calling it with 4 inputs arguments. You should be doing something like this

d = calculateDistance(1, 3, 7, 5)

The error points to line 4 because that is where you use the input variables, and some of them have not been defined/assigned a value.

Answer 2

[Image Analyst]

Try polyarea and pdist2. pdist2 will find all the distance between all 3 points, while polyarea will give you the area.