Undefined function or variable 'p1x'.

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Daniel Wurster
Daniel Wurster le 16 Juin 2019
Commenté : Daniel Wurster le 16 Juin 2019
I know, another "undefined function or variable ...." question, but i read through the other answers and still dont know whats wrong here.
I took a self written c programm and tried to put it into matlab code:
function [ab, la] = linepoint (p1x, p1y, p2x, p2y, p3x, p3y)
%%
la = sqrt((p2x-p1x)^2 + (p2y-p1y)^2);
%%Intitialize
d1 = p2x - p1x;
d2 = p2y - p1y;
er = sqrt(d1*d1+d2*d2);
u = (((p3x - p1x) * (p2x - p1x)) + ((p3y - p1y) * (p2y - p1y)))/(er*er);
if lt(u,0)
false;
else
p4x = p1x + u*(p2x-p1x);
p4y = p1y + u*(p2y-p1y);
ab = sqrt((p4x-p3x)^2 + (p4y-p3y)^2);
end
Clicking on run i get: Undefined function or variable 'p1x'.
What have i done wrong here? I c-code p1x is an integer type and no error occures.

Réponses (1)

Walter Roberson
Walter Roberson le 16 Juin 2019
Your code requires six inputs. When you click on Run, you are providing zero inputs. Where are you expecting it to get the value of p1x from when you click on Run ?
  1 commentaire
Daniel Wurster
Daniel Wurster le 16 Juin 2019
you're right. My bad :-(

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