[julia-users] quick sparse related question

[Jon Norberg]

rand(10).*rand(10,30)

but

sv=sparsevec([3,5,7],[0.1,0.0,3.2],4)

sv.*sprand(4,20,0.1)


sprandbool(10, 1, 0.1).*sprand(10,30,0.1)


rand(10).*sprand(10,30,0.1)


all give 

Incompatible sizes


Is my syntax wrong?