Help to Improve this short code (create a rect given initial point, final point and slope)

1 次查看（过去 30 天）
Aaron Garcia
Aaron Garcia 2020-5-30
评论： Aaron Garcia 2020-5-30
Hello there!!
I have write this code to find the Y values of a line, given two points and slope (calculate previous call the funtion), its to simple but in implementation i calling this function around 10 million times, so i need te reduce the time that it takes, if someone have some advice it would be helpful thank you!!!.
function[y] = LineFuntion(pts,m,Pi,Pf)
y=zeros(1,pts);
if abs(m) == Inf % vertical line
y(1:pts) = linspace(Pi(2),Pf(2),pts);
elseif m == 0 % horizontal line
y(1:pts) = Pi(2);
else
x=zeros(1,pts);
x(1:pts) = linspace(Pi(1),Pf(1),pts); %this line is the most time consuming
y(1:pts) = m*(x-Pi(1))+Pi(2); %this line is the second most time consuming
end
end

请先登录，再回答此问题。

采纳的回答

Mehmed Saad
Mehmed Saad 2020-5-30
function[y] = LineFuntion(pts,m,Pi,Pf)
if abs(m) == Inf % vertical line
y = linspace(Pi(2),Pf(2),pts);
elseif m == 0 % horizontal line
y = repmat(Pi(2),1,pts);
else
x = linspace(Pi(1),Pf(1),pts);
y = m*(x-Pi(1))+Pi(2);
end
end

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

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

Start Hunting!

Translated by