MATLAB Answers

created a function that inputs coordinate points like (1,2) in a loop for n number of points and keeps the x and y in seperate arrays. problem is it is only taking the first numbers entered... any clues?

5 views (last 30 days)
Christopher Pierro
Christopher Pierro on 28 Apr 2017
Answered: John Chilleri on 28 Apr 2017
function[x,y] = readCoordinates(n)
x = zeros(n,1);
y = zeros(n,1);
for i = 1:n
enterString = input('Please enter coordinates within parentheses seperated by a comma.','s');
components = sscanf(enterString,'%c%d%c%d%c');
x(i) = components(2);
y(i) = components(4);
end
end

  0 Comments

Sign in to comment.

Answers (1)

John Chilleri
John Chilleri on 28 Apr 2017
Hello,
Your code will work with one simple change:
function[x,y] = readCoordinates(n)
x = zeros(n,1);
y = zeros(n,1);
for i = 1:n
enterString = input('Please enter coordinates within parentheses seperated by a comma.','s');
components = sscanf(enterString,'%c%f%c%f%c');
x(i) = components(2); % CHANGE ^ ^ from d to f
y(i) = components(4);
end
end
This will search for floating point numbers which will solve the problem.
You might also consider changing,
'%c%f%c%f%c' to '(%f,%f)'
which would require changing,
x(i) = components(1);
y(i) = components(2);
but this is more of a stylistic preference, and I haven't fully considered the repercussions of either.
Hope this helps!

  0 Comments

Sign in to comment.