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'ArrayValued' Integral Extremely Slow: Slower than For-Loop Through Each Element of Array
Normally the integral function makes vectorized calls over the interval of integration, approximating the subintegrals over each...
4 mesi fa | 0
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...
circa 3 anni fa | 0
| accettato
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: [...
circa 3 anni fa | 0
| accettato
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...
oltre 3 anni fa | 1
| accettato
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.
oltre 6 anni fa | 1
| accettato
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...
oltre 6 anni fa | 0
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 ...
oltre 6 anni fa | 1
| accettato
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....
oltre 6 anni fa | 2
| accettato
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...
quasi 7 anni fa | 2
| accettato
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...
oltre 7 anni fa | 0
| accettato
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'...
oltre 7 anni fa | 0
| accettato
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...
quasi 8 anni fa | 1
| accettato
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...
oltre 8 anni fa | 0
| accettato
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...
quasi 10 anni fa | 0
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)*...
circa 10 anni fa | 0
| accettato
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...
oltre 10 anni fa | 0
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...
oltre 10 anni fa | 2
| accettato
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...
oltre 10 anni fa | 0
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...
oltre 10 anni fa | 1
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...
oltre 10 anni fa | 3
| accettato
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(...
oltre 10 anni fa | 1
| accettato
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 ...
oltre 10 anni fa | 0
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 ...
oltre 10 anni fa | 0
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 ...
oltre 10 anni fa | 0
| accettato
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,...
oltre 10 anni fa | 1
| accettato
A and B must be floating-point scalars.
>> help integral integral Numerically evaluate integral. Q = integral(FUN,A,B) approximates the integral of functi...
oltre 10 anni fa | 0
| accettato
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 ...
oltre 10 anni fa | 1
| accettato
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...
quasi 11 anni fa | 1
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...
quasi 11 anni fa | 0
