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The Mat Object

The Mat Object is unique to Hedgehog Lab and represents a matrice. It can be 1 dimensional, 2d, 3d and so on.

To declare one, it's like declaring an instance of a JavaScript object (by using the new keyword):

Don't forget to use ( ) to construct it!

We support many functions for matrices ...​

from basic summation, multiplication, cross products, decomposition, filtering for preprocessing data and more. All built in, easy to use. We will cover some over the course of this book and in the back there will be a reference for all current stable functions.

The fundamental properties of the Mat object are these:

row, cols, val. And from val stems val.length, val[0].length. These are vital for matrices. val is especially important as it allows one to transform a Mat object into a JavaScript array whenever necessary.

All built in functions for Hedgehog lab work for both JavaScript arrays, Tensor objects and Mat objects. However, if you only have a JavaScript array you are limited to JavaScript's libraries. Here are some examples of using Mat or its counterpart in a function: