Mike Hosea

Last seen: 6 jours il y a | Actif depuis 2011

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Codegen fails with "wrong number of input arguments" while function calls without error
I can't find where this behavior of INTERPN is documented. To the contrary, we have: >> help interpn interpn N-D inte...

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Matlab Coder Error: The output of the ODE function must be a column vector
I have to admit the problem here is pretty hard to diagnose. The problem actually traces back to the definitions of A and B: [...

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medfilt1 medifilt2 or movmedian
Long ago there was only medfilt1 and no movmedian. Then there was both. Now medfilt1 calls movmedian. That fact severely limi...

environ 2 ans il y a | 1

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Is there any other way to use coder for accumarray() ?
Not in 18b, I think. Support for accumarray was added in 19a, if memory serves.

plus de 4 ans il y a | 1

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EIG incorrect for large matrices when compiled into C on speedgoat target computer
Bit difficult to debug from here. Is your code calling the initialize and terminate functions for the library you are generatin...

plus de 4 ans il y a | 0

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ERROR: floating constant is out of range
That number is well within the range of IEEE double precision floating point numbers, but the TI TMS320F28379D has native 32bit ...

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How can I translate matlab functions to C/C++ void functions using codegen?
The code generator is usually smart enough to detect when computations have no side effects and have no impact on return values....

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what is the significance of 3.3121686421112381E-170 ?
Walter is on the right track. What we see above is essentually a loop-unrolled version of the reference BLAS algorithm of DNRM2...

environ 5 ans il y a | 2

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How can compile in C/C++ the lpc funciton ?
Extrinsic calls can work only when the target is mex or one is simulating in Simulink. This is because extrinsic calls are call...

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Coder, randsample: Variable 'edges' is not fully defined on some execution paths.
This is a bug in the code generation version of RANDSAMPLE. The compiler is complaining about a situation that it really doesn'...

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Multiple calls to interpn using same vectors
Unfortunately, there will be a separate look-up for each call. The only thing I can think of is to find the bounding box yourse...

environ 6 ans il y a | 1

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how use Curve Fitting functions in Matlab coder?
I'm not sure what you need. MATLAB Coder does support the SPLINE, PCHIP, and PPVAL. I don't know that much about what C libr...

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integralN.m
Compute Multiple Integrals of Orders 4, 5, and 6

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How can I calculate this triple integral when I have a rotated euler matrix. All that is attached in the file,
INTEGRAL3 does not support integrating a matrix of functions. For example, suppose you wanted to integrate f = @(x,y,z)[co...

environ 8 ans il y a | 0

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Why i have this errors in my triple integral ? change numeric methods ?
Well, theoretically like this: ss=0.6; T=0.1; a = 0.0001; f2 = @(r,b,g) 1./(r.^2.*sqrt(1 - (b./r).^2 - (g^-2)*...

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how can I solve a triple integral (x,y,z) with y not defined
Your integrand will be evaluated at an array of points each time (not just with one x, y, and z!), so it must return an array of...

plus de 8 ans il y a | 0

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Matlab R2015a coder error:Dimension 1 is fixed on the left-hand side but varies on the right ([1024 x 1] ~= [:? x 1]).
Use coder.varsize to create a variable-size copy of the Phi input. Rename the Phi input to something like PhiInput and just bef...

plus de 8 ans il y a | 2

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Generating c++ Code from *.slx
I'm not in sales, so I could be out-of-date in my recollection of how the product catalog is built, but my understanding is that...

plus de 8 ans il y a | 0

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randn() function generates the same sequence whenever I called it.
Every time you start MATLAB it will deliver the same sequence if you don't provide your own seed first. Your generated code mus...

plus de 8 ans il y a | 1

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simulink matlab function block error
You need to tell the compiler what the output of lqr will look like. Kr = zeros(1,2); % Define the output type for the extr...

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Run ANY matlab Function.m from simulink simulation
If you just want to run it from Simulink, just call _your_ function as extrinsic. For example if your function is called myfun(...

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Matlab Coder : Error using interpolation function interp1(x,y,z,'spline');
This all works fine for me. I just tried it in 15a. INTERP1 doesn't need to do anything fancy to figure out the _size_ of the ...

presque 9 ans il y a | 0

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Anyone know where to begin truing to solve an nth order integral? (n up to 10)
There's a good reason why there's no integraln function. There's a function called integralN on the file exchange that goes up ...

presque 9 ans il y a | 0

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How can I shrink the time of getting the results please?
That code never gave you results because it isn't working--there is a syntax error. Specific suggestions are therefore hard to ...

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triple integral of parametrized function
Something like this? psf = @(x,y,z)exp(-2*(x.^2+y.^2)-2*z.^2); fun1 = @(k,e,x,y,z)((e.*psf(x,y,z)).^k).*exp(-e.*psf(x,y,...

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A and B must be floating-point scalars.
>> help integral integral Numerically evaluate integral. Q = integral(FUN,A,B) approximates the integral of functi...

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Why does integral2 function changes the array size of variable over which integration is performed?
The iterated mode uses adaptive quadrature in each dimension, though your integrand function will, in a sense, be aware of only ...

environ 9 ans il y a | 1

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Inner matrix dimensions must agree.
You wrote I =@(x) U(x)*H(x)*D(x); That is probably not right. The * operator is _matrix_ multiplication. You probably...

environ 9 ans il y a | 1

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İntegral with array boundaries Need help
I've answered this question in a follow-up comment on the other question. It will work, but you have to debug your code. You w...

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synchronization of matlab function blocks
The MATLAB Function Block can return arrays. The problem with your code is probably just that you can't return the *persistent*...

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Mike Hosea

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