8.1. Matrix support

To enter matrixes, you can use one of the following two syntaxes. You can either enter the matrix on one line, separating values by commas and rows by semicolons. Or you can enter each row on one line, separating values by commas or tabs. (Note that tabs are not usually easily possible on the console, only in files). You can also just combine the two methods. So to enter a 3x3 matrix of numbers 1-9 you could do

[1,2,3;4,5,6;7,8,9]

or

[1, 2, 3
 4, 5, 6
 7, 8, 9]

or (where the empty spaces are tabs)

[1 2 3
 4 5 6
 7 8 9]

Do not use both ';' and return at once on the same line though. Also do not mix tabs and commas. It is just safest to use commas as separators.

You can also use the matrix expansion functionality to enter matricies. For example you can do:

a = [ 1, 2, 3
      4, 5, 6
      7, 8, 9]
b = [ a,  10
      11, 12]

and you should get

[1  2  3  10
 4  5  6  10
 7  8  9  10
 11 11 11 12]

similiarly you can build matricies out of vectors and other stuff like that.

Another thing is that non-specified spots are initialized to 0, so

[1, 2, 3
 4, 5
 6]

will end up being

[1 2 3
 4 5 0
 6 0 0]