Needing to increment a number within a sin function

I am creating a matrix which has a sin function in the diagonal. It starts with 10sin(0) and goes on to 10sin(1), 10 sin(2)... all the way to 10sin(19). How can I make this happen?

Answer 1

[Star Strider]

Try something like this —

S = 10*sin(diag(0:19))

S = 20×20

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.4147 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9.0930 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1.4112 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -7.5680 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -9.5892 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -2.7942 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.5699 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9.8936 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.1212 0 0 0 0 0 0 0 0 0 0

See the documentation on diag for details.

.

[John D'Errico]

Would that be a "sin"ful answer? :)

[Star Strider]

Quite definitely!