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### orthogonality15 Replies

Hi,i have a question...if I have a family of curves, it's possible to find the orthogonal with grasshopper?Continue

Started this discussion. Last reply by Danny Boyes Mar 21, 2012.

### map a graph33 Replies

This time I ask something more difficult.I have an image formed by the range of colors and I would like to extrapolate the curves that follow the color tones ... how can I do?This is the image…Continue

Started this discussion. Last reply by Vicente Soler Mar 9, 2012.

### create data tree4 Replies

Hi,I have a problem that you may look very simple but I can not solve: I have 6400 data that must be grouped 4 by 4 ...so I should make a tree with 1600 branches and each branch must be 4…Continue

## Latest Activity

Danny Boyes replied to Giulia Arcadi's discussion orthogonality
"Is this related to Daniel Piker's Rhheotomic Surfaces http://www.grasshopper3d.com/video/rheotomic-surface-flowline-relationship  "
Mar 21, 2012
Vicente Soler replied to Giulia Arcadi's discussion orthogonality
"Italian is similar to spanish so i guess i can sometimes understand italian people trying to speak english better than a native english speaker."
Mar 21, 2012
"No,come on!!! ;)"
Mar 21, 2012
Danny Boyes replied to Giulia Arcadi's discussion orthogonality
"I did ask: I guess it was lost in translation. I'll just go back and sit in my corner then :)"
Mar 21, 2012
"yes, get this it's a good result for me."
Mar 21, 2012
Vicente Soler replied to Giulia Arcadi's discussion orthogonality
"Depends on how accurate you want it to be. You could divide the surface that's being used to generate contours into a grid of points, connect those points to the drainage script and then substitute the contour lines with the script output. That…"
Mar 21, 2012
"yes...  so is not a simple thing to achieve ...thanks anyway for the information!"
Mar 21, 2012
Vicente Soler replied to Giulia Arcadi's discussion orthogonality
"What i think she is trying to achieve is to actually draw perpendicular lines to the ones she already has. There is no simple way to do this, one aproximation could be to use the drainage python script that can be found somewhere else in this…"
Mar 21, 2012
Danny Boyes replied to Giulia Arcadi's discussion orthogonality
"Unfortunately the only way to achieve this is to fit a plane trough your curve to represent it and as its not planar it will be a very gross approximation. Not sure if this has worked but there are three sets of curves "
Mar 21, 2012
"look..in this file there is the family of curves that I want to find the orthogonal ... you think is possible?"
Mar 21, 2012
Danny Boyes replied to Giulia Arcadi's discussion orthogonality
"Here we go: You will need to distinguish between the curves in the first direction (U) from those in in the second direction (V). The identifying orthogonality is easy as the DOT product of two vectors would be 0 if they are perpendicular.…"
Mar 21, 2012
julien replied to Giulia Arcadi's discussion orthogonality
"Using the Dot product seems to be a good solution. Vectors are orthogonal if the dot product =0"
Mar 21, 2012
Danny Boyes replied to Giulia Arcadi's discussion orthogonality
"thinking...."
Mar 21, 2012
"b)"
Mar 21, 2012
Danny Boyes replied to Giulia Arcadi's discussion orthogonality
"Do you want to know if the curves are: a) all orthogonal b) which are orthogonal to each other or c) what the plane would be that represents the orthogonal axes?"
Mar 21, 2012

### orthogonality

Hi,i have a question...if I have a family of curves, it's possible to find the orthogonal with grasshopper?See More
Mar 21, 2012

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