Image Sampling issues

by Matthew Tibballs

Aug 3, 2015

Hi I've replicated this script from 'Agorithm-aided design' by Arturo Tedeschi which is using image sampling to create a pattern of circles of various scales based on the black and white values of the image. I created a black background with a faded white center in photoshop and put this in, but for some reason Grasshopper does not recognize it?

Any help would be much appreciated.

  • up

    David Rutten

    On an ipad now, can't open the file, but it seems to me there should be a teeny tiny circle around your point. Can you see it when you zoom in?

    Aug 4, 2015

    • up

      Riccardo Majewski

      In the starting "Point" component, in your screenshot you have single wire coming out (thus, only 1 point) but in the photo of the book you can see a double wire coming out instead (multiple points then, probably a grid of points).

      Try to set or make multiple points in the initial point component (place them inside the area of the surface).

      You could use populate or... a lot of other ways.

      Aug 4, 2015

      • up

        Nick Tyrer

        Matthew, as ricardo said you only have a single point at the beginning of your definiton. When in fact there should be a point at every point you want to sample. I haven't got the book, but it might continue on from a previous example, if it doesnt mention it then its a poor example.

        The simplest way to get the desired result is to insert a 'divide surface' at the beginning of your definition.

        Example below

        Aug 4, 2015