# Mike Hosea

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**Content Feed**

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...

5 mesi 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: [...

5 mesi fa | 0

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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...

11 mesi fa | 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.

oltre 3 anni fa | 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...

oltre 3 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 ...

circa 4 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....

circa 4 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...

circa 4 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 4 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 4 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...

circa 5 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 5 anni fa | 0

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Inviato

integralN.m

Compute Multiple Integrals of Orders 4, 5, and 6

oltre 6 anni fa | 16 download |

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...

circa 7 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)*...

oltre 7 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 7 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 7 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 7 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 7 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 7 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 7 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 7 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 ...

circa 8 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 ...

circa 8 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,...

circa 8 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...

circa 8 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 ...

circa 8 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...

circa 8 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...

circa 8 anni fa | 0

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*...

circa 8 anni fa | 0

| accettato