Hi Haider, the matrix is the design pattern created from your tonal areas. Specifically how light shapes interact with dark shapes. For example if you had two connected puzzle pieces, one white and one black, the shape of those solid tonal puzzle pieces would make up the matrix. The black puzzle piece could have a set of tonal values that fall into the dark tones category, and the white piece could have tones that fall into light tonal range as you develop the drawing.
Or, if you wanted to group a row of trees into the same value, that shape and its border with the surrounding tonal areas (the sky and ground) would form the matrix. It is simply the shape of your tonal areas.
In short, he is asking you to design grouped patterns comprised of darks, mid-tones and lights
In the second chapter Bill explains this better than I do 🙂
Hi Tim, please save the link for when you are ready to come back to it! It is a fairly straight forward concept though. He could have just said shadow midtone and light shapes, but once he builds on the concept, later on, its meaning become much more nuanced
Hi Haider, The link is to Bill Perkins Color Theory Course. I do not think this is part of the beginners series. When navigating I always right click and open in new tab so I don’t lose my place.
I also recommend starting from https://www.nma.art/learn/ when trying to find a new course.
You can navigate through the genres like Netflix either by rows or by buttons above the rows.
Let me know if you have any other questions 🙂