It's a toeplitz matrix... so use the command
toeplitz(0:4)
to recreate your example. I'm sure you can extrapolate to the general n-by-n case.
More generally, if you want to create a matrix, use an array creation function like toeplitz, ones, rand, (type
doc elmat
and check out 1.) the list of Specialized matrices at the bottom of the help file and 2.) the list of elementary matrices at the top of the file.)
Beyond array creation functions, you can concatenate values both horizontally and vertically to create a vector/matrix/high d array. One way to concatenate is with square braces. For example, to concatenate 1 and 2 horizontally, use the command
v = [1,2]
That is, commas in square brackets can be interpreted as horizontal concatenation. To concatenate vertically, use the command
v = [1;2]
That is, semicolons in square brackets can be interpreted as vertical concatenation.
To build a matrix, construct it row-by-row sequentially from the first row to the last row. For example, the command
a = [0,1,2,3,4;1,0,1,2,3]
constructs the first row (0,1,2,3), then concatenates vertically (;) the second row (1,0,1,2,3);
That may not be the clarification you were looking for, so let me know if I can clarify.
