If I have this vector:I would like to get the position of each unique number according to itself.At the moment I'm using:

## set 'help' for matlab anonymous functions

I have a long anonymous function, and I wondered whether the help output can be modified (easily):I know long anonymous functions might be a rather unusual thing- nevertheless: can this be achieved, maybe with undocumented functions, for only as long as the function handle exists?

## How to make previous inputs progressively fade out in a Matlab plot when I add new inputs

Let's say I have this very simple loopThe coordinates that I am plotting correspond to the joints of a multibody system, and I am simulating their positions over time (please see a sample of the plot here):

## Find equal rows between two Matlab matrices

I have a matrix index in Matlab with size GxN and a matrix A with size MxN. Let me provide an example before presenting my question.

## How can I express this large number of computations without for loops?

I work primarily in MATLAB but I think the answer should not be too hard to carry over from one language to another.

## We need to preallocate. But MATLAB does not preallocate the preallocation?

While testing if any() short-circuits (it does!) I found out the following interesting behavior when preallocating the test variable:

## Why does nansum work for input that exceeds matrix dimensions?

I am wondering about matlab's nansumfunction.When I use the example from the documentationand then call

## Programmatically return a list of all functions

I want to programmatically get a list of available functions in the current MATLAB namespace, as well the available functions in a package. How can this be done?

## Finding (multiset) difference between two arrays

Given arrays (say row vectors) A and B, how do I find an array C such that merging B and C will give A?

## In MATLAB, how to find indexes in vector every time value change from 1 to 0?

I have a vector of 1s and 0s that represent when an intermittent data signal is occurring. E.g.:How do I find the index value of every change from 1 to 0? So for vector V above, the answer would be: