Extracting Real number only from 6 roots

I am trying to extract only the real number from a set of roots. I
dont want the real parts of a complex number. Just the one valid time
value.

I tried help real but that is for complex numbers. Any ideas.

my mfile

t = 0:0.1:100;
velc = -0.907802*t + 88.000000;
velc = velc';


for ii = 1:1001

velc =velc(ii);
ply = [-0.000393 0.012873 -0.159027 0.875055 -2.195467 -2.899670
(88.000000-velc(ii))]

result = roots(ply)
result(ii) = real(result)

end

Michael wrote:
>
>
> I am trying to extract only the real number from a set of roots. I
> dont want the real parts of a complex number.

I think you want the "isreal" command rather than the "real" command.

I believe the isreal command only tells the make up of the number. I
cant use the real command in my mfile and only have it shown for
demonstrative purposes. I need a command to pull out the sole real
number and not any real part of a complex number. Thanks

Michael:
<SNIP what's real - what's wrong...

...with

% loop
res(ii)=result(real(result)==result)
% loop

us