# Eric Sampson

### Seagate Technology LLC

Professional Interests: Signal processing

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**Content Feed**

Question

Dealing with Change Notification Handle issues with M files on network shares - ideas?

Hi all, have any of you come up with solutions (either client or server settings) to the infamous "Warning: Could not get change...

6 years ago | 1 answer | 0

### 1

answerMultithreaded sparse matrix multiplication?

I believe the sparse matrix code is implemented by a few specialized TMW engineers rather than an external library like BLAS/LAP...

7 years ago | 0

MATLAB R2014b Error on Startup

Try issuing this command (save your original PATH to a .mat file if you care about wanting to be able to recreate it): restor...

7 years ago | 6

| accepted

Where are the mathematics behind scatteredInterpolant documented

If you contact Support and ask very nicely, they might be able to provide information about this... I have vague recollections t...

7 years ago | 0

Question

How to generate square-ish rectangle dimensions for any specified area

Hi all, given an arbitrary positive integer N, how can I calculate two integer factors A and B subject to A*B = N with the restr...

7 years ago | 1 answer | 0

### 1

answerWindows Custom Device Driver Control

Hi Tom, my initial thoughts would be to investigate one of the following: a) write a C/C++ dll API for your driver, and then ...

8 years ago | 1

| accepted

Question

Fast location of zero crossings with interpolation

Hi all, I've got data that looks like this: clean = sin(1:0.2:2e5); noise = -0.03 + (0.06).*rand(size(clean)); data =...

8 years ago | 2 answers | 0

### 2

answersPARFOR behavior sensitive to comments???

Matt, what happens if you create the anonymous function inside the parfor loop? If that helps, but if in actual code you need to...

8 years ago | 1

Is there a way to make device memory persist between CUDA MEX calls

Matt, see if the methods discussed in the following thread could be adapted for your use: http://www.mathworks.com/matlabcentral...

8 years ago | 0

Arrayfun scalar expansion (non-uniform output)

Use a for loop instead of arrayfun?

8 years ago | 0

Question

value classes - do you use them? I must be doing something wrong...

So I can't really recall ever creating a value class, all mine seem to be handle classes. Is that the same as your experience? U...

8 years ago | 1 answer | 1

### 1

answerQuestion

How to perform a 'chunked average', similar to a rolling average?

Hi, I don't know what the right terminology is, but I'd like to know if there is a nice vectorized syntax for calculating a 'chu...

8 years ago | 1 answer | 0

### 1

answerQuestion

Are accumarray/cellfun/arrayfun/etc multithreaded?

As per the subject line, anyone know? If not, could this be done by TMW without a lot of effort?

9 years ago | 2 answers | 2

### 2

answersQuestion

Conditional cumsum - how to create?

This is probably easy, but my brain isn't working today... How can you do the following operation in a vectorized way? I'd th...

9 years ago | 2 answers | 0

### 2

answersQuestion

Generate a comma-separated list from a numeric array?

Is there a way to generate a comma-separated list from a numeric array without generating a temporary cell array? If not, would ...

9 years ago | 1 answer | 3

### 1

answerQuestion

onCleanup - do different things based on how you entered it.

Hi, I've got a function where we want to run some code if there is an error, or a Ctl-C, but not if the function exits normally....

9 years ago | 1 answer | 0

### 1

answerQuestion

Anyone figure out how to send code from FireFox/Chrome to MATLAB for evaluation?

In the MATLAB Help Browser, you can right-click a text selection and choose 'Evaluate Selection' to evaluate it in the MATLAB Co...

9 years ago | 2 answers | 1

### 2

answersQuestion

Do you ever make use of non-uniform arrays of structures?

Loren explained in the following comment on her blog that certain vectorized struct assignment syntax is not currently allowed b...

9 years ago | 2 answers | 0

### 2

answersQuestion

Using conditional breakpoints to print out value

Hi, I'm interested if it would be possible to use/abuse(?) conditional breakpoints to print out the value of a variable to the c...

9 years ago | 3 answers | 1

### 3

answersQuestion

How to create variability charts?

I'm trying to find a way to recreate <http://www.jmp.com/support/help/images/Comparing_Multiple_Variables_4.png JMP-style variab...

9 years ago | 2 answers | 0

### 2

answersQuestion

array of structures to cell array via comma-separated list

Suppose I have the following array of structs: data(1).f1 = 1; data(2).f1 = 2; data(1).f2 = 'foo'; data(2).f2 = 'b...

9 years ago | 1 answer | 0

### 1

answerconditional array extraction based on control array

If I understand your question correctly, try this: z=y(intersect(x,c));

9 years ago | 0

Question

Strategies to store/load 'configuration' data

Hi, we often have the need to store/load configuration data, for hundreds of cases. Current practice is to store it in an M-file...

9 years ago | 2 answers | 0

### 2

answersQuestion

Discussion about Answers & Votes

Hi all, a couple questions/thoughts for the community: 1) Would you like to be able to Accept multiple answers? I think this ...

9 years ago | 5 answers | 4

### 5

answersQuestion

Make dataset arrays part of base MATLAB?

Hi all, I was wondering if anyone else wished that the Statistic Toolbox's dataset arrays were included in base MATLAB. They are...

9 years ago | 3 answers | 2

### 3

answersQuestion

How to create a struct from a cell array of fieldnames and a cell array of values?

How can you take a cell array array of fieldnames and a cell array of values, and convert them into a structure without looping?...

9 years ago | 2 answers | 0

### 2

answersQuestion

How to SAVE data to disk in a background thread?

Has anyone figured out a way to run the SAVE command in a background 'thread', so that MATLAB can keep on running code while the...

9 years ago | 2 answers | 0