Generating random complex numbers between -0.5 to 0.5 in Gatbx

i am trying to use the gatbx for a problem . in which functions like bs2rv , crtbase, crtbp, crtrp, Objfun, ranking , select, recombine , reins these functions are present.

now in the main

NIND = 40;           % Number of individuals per subpopulations
MAXGEN = 15;        % maximum Number of generations
GGAP = .9;           % Generation gap, how many new individuals are created
NVAR = 32;           % Number of variables
PRECI = 8;          % Precision of binary representation

% Build field descriptor
 FieldD = [rep([PRECI],[1, NVAR]); rep([-0.5-0.5i;0.5+0.5i],[1, NVAR]);...
            rep([1; 0; 1 ;1], [1, NVAR])];

% Initialise population
 Chrom = crtbp(NIND, NVAR*PRECI);
 Phen = bs2rv(Chrom,FieldD);

what i am trying to do is to generate some random complex numbers between -0.5 to 0.5 .

in the FieldD vector i am specifying the upper bound and lower bound for my variable where i have written

rep([-0.5-0.5i;0.5+0.5i],

but this is giving me numbers like

-0.3863 - 0.3863i   0.3510 + 0.3510i
 0.2961 + 0.2961i   0.2373 + 0.2373i
-0.1196 - 0.1196i   0.1039 + 0.1039i
 0.2961 + 0.2961i  -0.3706 - 0.3706i
-0.4843 - 0.4843i  -0.4882 - 0.4882i
-0.3706 - 0.3706i  -0.2412 - 0.2412i
-0.0373 - 0.0373i   0.3471 + 0.3471i
 0.4176 + 0.4176i  -0.4294 - 0.4294i
-0.1745 - 0.1745i   0.3784 + 0.3784i
-0.3706 - 0.3706i  -0.2451 - 0.2451i
-0.4882 - 0.4882i   0.4098 + 0.4098i
 0.0412 + 0.0412i   0.2882 + 0.2882i
 0.3157 + 0.3157i  -0.4725 - 0.4725i
-0.3863 - 0.3863i   0.3510 + 0.3510i
-0.4647 - 0.4647i   0.0098 + 0.0098i
 0.4137 + 0.4137i   0.2451 + 0.2451i
-0.1353 - 0.1353i   0.3000 + 0.3000i
 0.3000 + 0.3000i   0.4373 + 0.4373i
-0.0373 - 0.0373i  -0.4333 - 0.4333i
 0.1471 + 0.1471i  -0.4373 - 0.4373i

in my Phen vector. this is missing numbers like -0.4373 + 0.4373i or +0.4373 - 0.4373i what can i do to make this happen ..

[dpb]

>> which rep
'rep' not found.
>>

Looks like it's dependent on how that function works...

[Hamza]

this is a replicate function, basically this FieldD vector is used for encoding the real valued variables to the 'Phen' through Phen = bs2rv(Chrom,FieldD);while chromosome is the binary string and FielD is specifying how to do it. included the precision= how many bits should be used to represent one variable. lb=lower bound, up=uperbound, up and lb is the range of the my variable. like presently i want that my variable should be between -0.5 and 0.5 complex numbers. if i want to do it using this FieldD i have to specify an up and lb. i tried rep([-0.5-0.5i;0.5+0.5i]; this one is not giving me complex numbers like +0.5-0.5i,and -0.5+0.5i. i want to solve this i am attaching the functions for you.

[dpb]

Not knowing much about what this is really doing, just looking the routine doesn't seem tailored to handle complex variables.

Looks to me like you would either use Roger's solution or if you think you must use these routines, modify the routine to specifically handle complex.

The question then becomes is it simply a random sign between Re,Im parts you care about or do you want a "real" PRV over the complex plane?

b)

Answer 1

[Roger Stafford]

(rand(20,2)-.5) + (rand(20,2)-.5)*1i ;

[k i]

thank you sir ,it is very much useful to me

Answer 2

[Hamza]

yes you are right . the code you mentioned is giving me 20 complex numbers within this range . but in my situation i have to specify a range . i want to do it using that range. this is a replicate function, basically this FieldD vector is used for encoding the real valued variables to the 'Phen' through Phen = bs2rv(Chrom,FieldD);while chromosome is the binary string and FielD is specifying how to do it. included the precision= how many bits should be used to represent one variable. lb=lower bound, up=uperbound, up and lb is the range of the my variable. like presently i want that my variable should be between -0.5 and 0.5 complex numbers. if i want to do it using this FieldD i have to specify an up and lb. i tried rep([-0.5-0.5i;0.5+0.5i]; this one is not giving me complex numbers like +0.5-0.5i,and -0.5+0.5i. i want to solve this i am attaching the functions for you.