i have a important question!! ( function "randfixedsum" )

2 Ansichten (letzte 30 Tage)
Brian Kim
Brian Kim am 28 Mär. 2017
Beantwortet: Roger Stafford am 28 Mär. 2017
i successd in create matrix 'x' from "randfixedsum"
in here, 'x' is formed 'double'. and 'x' can recreate as integer by using "round", "ceil", or "floor"
by the way,
how to create 'x' by way for 'integer' by itself?

Antworten (2)

Roger Stafford
Roger Stafford am 28 Mär. 2017
I think you might prefer to use the following code rather than using randfixedsum and rounding to integers:
function R = randfixedsumint(m,n,S);
% This generates an m by n array R. Each row will sum to S, and
% all elements are all non-negative integers. The probabilities
% of each possible set of row elements are all equal.
% RAS - Mar. 4, 2017
if ceil(m)~=m|ceil(n)~=n|ceil(S)~=S|m<1|n<1|S<0
error('Improper arguments')
P = ones(S+1,n);
for in = n-1:-1:1
P(:,in) = cumsum(P(:,in+1));
R = zeros(m,n);
for im = 1:m
s = S;
for in = 1:n
R(im,in) = sum(P(s+1,in)*rand<=P(1:s,in));
s = s-R(im,in);

KSSV am 28 Mär. 2017
doc uint8
  2 Kommentare
Brian Kim
Brian Kim am 28 Mär. 2017
where apply that?
KSSV am 28 Mär. 2017
Bearbeitet: KSSV am 28 Mär. 2017
uint8 covers double to int.
x_int = uint8(x) ;

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