Selected out to simulink

2011 2 23
2 个回答
回答已采纳
6 次查看（30 天）

0 个投票

Hi,
I've two arrays
ARRAY1=[5 4 1]' ARRAY2=[6 5 9]'
I need an Embedded funcion in simulink which take out equal value element ONLY (for example 'out=5' only). Please help me.

请先登录，再回答此问题。

 采纳的回答

cyberdyne
cyberdyne 2011-2-23

0 个投票

It's very very good!! Thank you very much.
Therefore if we suppose that we connect to emlblock two variable inputs with the same temporary variable (for example two definite integrals from t0 to t0+Ts for each of them, where t0 is starting istant and Ts is clock time), we can take out the equal element writing:
function y = fcn(u1,u2)
% This block supports the Embedded MATLAB subset.
% See the help menu for details.
eml.extrinsic('ismember')
eml.extrinsic('find')
a=ismember(u1,u2);
r=find(a);
rr=1;
rr=r;
ur=u1(rr);
y =ur;
is it???

4 个评论
显示 2更早的评论 隐藏 2更早的评论

Paulo Silva
Paulo Silva 2011-2-23
It's not that easy, try the function just like I did and after it's working try to change it for what you want, you will find several problems to solve because of the embedded function limitations.
cyberdyne
cyberdyne 2011-2-23
I'll do it. Really thanks for the help!!!
Paulo Silva
Paulo Silva 2011-2-23
Thank you too for selecting your own answer instead of mine!
cyberdyne
cyberdyne 2011-2-23
Really I don't make this function necessarily with EML. I can do it with C S-function but I don't know C commands to make it.

请先登录，再进行评论。

更多回答（1 个）

Paulo Silva
Paulo Silva 2011-2-23

1 个投票

Here's a code that works just for your example, I had trouble with mxArray not being supported by embedded functions so the final code looks very bad but works, I tested it with your arrays, each one inside a constant block, both array connect to a mux and that mux to the embedded function, the result is shown on a display, in this case the display shows the number 5
function y = fcn(u)
% This block supports the Embedded MATLAB subset.
% See the help menu for details.
eml.extrinsic('ismember')
eml.extrinsic('find')
u1=[u(1) u(2) u(3)]; %had to do this instead of u1=u(1:3)
u2=[u(4) u(5) u(6)];
a=ismember(u1,u2);
r=find(a);
rr=1; %the trick here is to have a temporary variable of the same type
rr=r; %we expect the extrinsic function to return
ur=u1(rr);
y =ur;

3 个评论
显示 1更早的评论 隐藏 1更早的评论

cyberdyne
cyberdyne 2011-2-23
It says me that "find" is not supported by EML.
Guy Rouleau
Guy Rouleau 2011-2-24
Find is supported only since a few releases, R2009b I think. It is not supported in previous releases.
cyberdyne
cyberdyne 2011-2-24
Can i upgrade it with, for example, R2010? Or i've to uninstall old and reinstall R2010?

请先登录，再进行评论。

类别

在 帮助中心 和 File Exchange 中查找有关 Simulink 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by