I have somethink like this :
rand(4,4).-eye(4,4)*5
Qestion : how to simpler subtracted from the diagonal value(5) ,
Without multiplying matrices I have great and I have to simplify the
code.
Paul
Thx, nice. Is the fast way in Julia ?
Paul
W dniu niedziela, 1 lutego 2015 17:18:03 UTC+1 użytkownik Andreas Noack
napisał:
This is cheaper: rand(4,4) - 5*I because 5I is a special type that doesn't
store all elements.
2015-02-01 11:03 GMT-05:00 paul analyst paul.a...@mail.com javascript:
I think so, but it neither take long time
julia let
A = rand(4,4);
@time for i = 1:10^6;A - 5.0*eye(4);end
end;
elapsed time: 0.177621144 seconds (534 MB allocated, 5.71% gc time in 25
pauses with 0 full sweep)
julia let
A = rand(4,4);
@time for i =
This is cheaper: rand(4,4) - 5*I because 5I is a special type that doesn't
store all elements.
2015-02-01 11:03 GMT-05:00 paul analyst paul.anal...@mail.com:
I have somethink like this :
rand(4,4).-eye(4,4)*5
Qestion : how to simpler subtracted from the diagonal value(5) ,
Without
