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**Feeds**

can anyone help me implement this?

Check out the documentation of "ode45", this should give you some idea of where to start. This uses the Range Kutta shooting me...

4 years ago | 1

Having trouble making a for loop equation

It isn't obvious what you are trying to do, you have a 3D function and want to fit an order 8 polynomial to it in z only? In ...

4 years ago | 0

Question

Simulating lens tilt on image

I am currently trying to simulate the effect of lens tilt on a flat image (i.e., one that does not contain multiple depths of fi...

4 years ago | 2 answers | 0

### 2

answersQuestion

Close all figures which are not docked

Is there any easy way to close all figures which are not docked? Either a high level command or a way to loop over figures and ...

4 years ago | 2 answers | 0

### 2

answersI have a function that gives two outputs, what is the easiest way to use fzero on only the second output

No good way of doing this within Fzero, people have made that clear.

4 years ago | 0

| accepted

Using function syntax with stand alone executables

Having looked through all the answers to do with this, it appears it is just truly awful. I'm tempted to make a wrapper of the ...

5 years ago | 0

Question

Using function syntax with stand alone executables

If I generate a stand alone executable, lets call it myfun.exe, can I call this using the function rather than command syntax? ...

5 years ago | 1 answer | 0

### 1

answerQuestion

I have a function that gives two outputs, what is the easiest way to use fzero on only the second output

I have a function [a,b] = fun(x) when I don't want to change the function. I want to find the value of x for which b returns ze...

6 years ago | 2 answers | 0

### 2

answersQuestion

mtimesx crashes when used

After compiling the user submitted function mtimesx <http://www.mathworks.com/matlabcentral/fileexchange/25977-mtimesx-fast-matr...

7 years ago | 1 answer | 0

### 1

answeri keep getting this Attempted to access y(1.5); index must be a positive integer or logical. when trying to implement a numerical hybrid scheme involving y(i+1/2) . here's the code so far: the problem is in line36

You can't call an index of an array with non-positive integer arguments. There is no 3/2 th entry of a matrix or vector, that d...

8 years ago | 0

| accepted

How to solve "Error using ' Transpose on ND array is not defined. Use PERMUTE instead." ?

My guess is that your variable "img" has more than 2 dimensions. Identify which 2 dimensions of "img = imread(str);" are the on...

8 years ago | 0

Question

Controlling output of ode solvers

I am currently running an ODE solver in the form dy = @(t,y) M*y; [tout,y_out] = ode45(dy, trange,yinit); % y_out is...

8 years ago | 0 answers | 0

### 0

answersQuestion

Limiting "y" output of ODE solvers

I am currently running an ODE solver in the form dy = @(t,y) M*y; [tout,y_out] = ode45(dy, trange,yinit); ...

8 years ago | 1 answer | 0

### 1

answerQuestion

Strange colorbar ticks, not standard form

I am finding the behaviour of matlab odd when I am making contourf plots. The data I have is low amplitude so typically the dat...

9 years ago | 0 answers | 0

### 0

answers"XXX" requires more input arguments to run

All these answers are basically "give the function default parameters" which is not always a desirable solution. If I accidentl...

9 years ago | 1

for about three days I have had this error message: Cell contents reference from a non-cell array object.

The problem is likely that one of X or y is not defined as a cell array. Can you put two lines of code before the error which...

9 years ago | 0

Question

1D Convolution over a slice within 2D data

If I have a matrix R which tabulates some function "R(x,y)" and I wish to calculate I(x,y) = int_{-inf}^{inf} dz P(z) R(x+z...

9 years ago | 0 answers | 0

### 0

answersSolving N linear equations for N unknowns using arrays? Is this even possible?

As you have written it, it seems that sigma_a_InstrumentOneWest=sigma_a_InstrumentOneEast and the same for the instrument ...

9 years ago | 0

Question

Changing function logic parameters depending on outputs

If I have a function with 3 output arguments [a,b,c] = fun(x) I want the function only to calculate a,b,c if I actually c...

9 years ago | 1 answer | 0

### 1

answerQuestion

Matlab UI crashes on startup in windows

When I start matlab on windows and don't enter any commands for a minute or so the cursor changes to a resize arrow and the UI n...

9 years ago | 0 answers | 0

### 0

answersQuestion

What does permute actually produce?

Trying some calculations earlier, I have realised permute does not do what I thought it did. To clarify I did this % c...

9 years ago | 1 answer | 0

### 1

answerQuestion

Dynamic scaling of ODEs

When dealing with (linear) ODEs which have a solutions that decay/grow approximately exponentially is there anyway to get the in...

10 years ago | 0 answers | 0

### 0

answersQuestion

updating function list in a script.

As part of some code I am writing I am printing out symbolic variables into a .m file (so that they can be called with d.p. argu...

10 years ago | 1 answer | 1

### 1

answerQuestion

simplifying symbolic expressions with factors of pi

If I have some symbolic expression say FF = besselj(1/2,x) FF = (2^(1/2)*sin(x))/(pi^(1/2)*x^(1/2)) I wish to cancel th...

10 years ago | 1 answer | 0

### 1

answerQuestion

Factorizing an expression into a function of one parameter symbolic toolbox

Say I have some general symbolic expression which is a function of many symbolic variables a,b,c,d,e,f... etc. e.g. FF = cos(a)...

10 years ago | 0 answers | 0

### 0

answersSubmitted

Express_as_exponential_series

Converts a symbolic expression S to the form S = sum_{k=1}^N c_k exp(b_k*t)

10 years ago | 1 download |

Question

Symbolic expansions, is it possible to express a solution as a series of exponentials

Lets say I have something like f_t = (A*cos(a*t) + B*sin(b*t))*(C*cos(c*t) + D*sin(c*t)), what I would like is something...

10 years ago | 1 answer | 0

### 1

answerQuestion

Simplifying numbers in symbolic function

Upon substituting into a symbolic expression I get very long analytic expressions for numbers, e.g. (2^(1/2)*(3^(1/2)*pi*(5^(...

10 years ago | 1 answer | 0