Maybe
perp.slope = -1/slope
abline(cy - cx*perp.slope, perp.slope)
where cx, cy are x- and y-coordinate of C, resp., and slope the slope you
calculated for the line through A and B
Am 24.Aug.2010 um 0:04 schrieb CZ:
Hi,
I am trying to draw a perpendicular line from a point to two
hi,
also, make sure you have set the aspect ratio to 1:1 when plotting (asp=1).
HTH,
baptiste
On 25 August 2010 10:20, Benno Pütz pu...@mpipsykl.mpg.de wrote:
Maybe
perp.slope = -1/slope
abline(cy - cx*perp.slope, perp.slope)
where cx, cy are x- and y-coordinate of C, resp., and slope
At 3:04 PM -0700 8/23/10, CZ wrote:
Hi,
I am trying to draw a perpendicular line from a point to two points.
Mathematically I know how to do it, but to program it, I encounter some
problem and hope can get help. Thanks.
I have points, A, B and C. I calculate the slope and intercept for line
Hi:
The function below plots the line segment between two points A and B as well
as the normal from C to AB, with a dot as the intersection point (D), which
is returned with the function call. The aspect ratio is kept at one so that
the orthogonality between the two lines is not distorted by the
Thank you all for your suggestions and especially the codes.
Now I am able to solve it by finding the intercepts and slopes for both
lines first, and then I can find the coordinates of x and y at the
intersection. At first I forgot how to use C to get the intercept of line
CD...
Thanks
Hi,
I am trying to draw a perpendicular line from a point to two points.
Mathematically I know how to do it, but to program it, I encounter some
problem and hope can get help. Thanks.
I have points, A, B and C. I calculate the slope and intercept for line
drawn between A and B.
I am trying
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