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# Albert

### The University of Tennessee, Knoxville

Last seen: 2 years ago Active since 2016

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How to drop last N round-off error digits?
floor(1e12*X0)/1e12 this may work better than round(1e12*X0)/1e12

5 years ago | 0

Question

ray tracing, indices and path length registration
Dear all Thank you for reading my following question and I greatly appreciate any of your help. Problem: Given a grid ...

5 years ago | 1 answer | 0

### 1

data brushing is extremely slow
Thanks for you comments. I apologize for not posing the right answer here. For my case, there is nothing wrong with MATLAB. Actu...

5 years ago | 0

| accepted

How to pass summation of function handles to fminsearch
Thank everyone. I finally got it work. Here is my solution. I apologize for my vague question. It was my bad to introduce i...

5 years ago | 1

Question

How to pass summation of function handles to fminsearch
Hi, everyone I am trying to pass a sum of function handles to fminsearch, however it always give me the error: Not enough in...

5 years ago | 4 answers | 0

### 4

HELP, HELP, HELP, PLEASE!!! brush data from 2 dimensional figure
Thanks, I got it solved by myself. For these who may have come across the same issue, here is how I solved it: [x,y,z]=find...

6 years ago | 0

| accepted

If A is a 3x4 matrix, how do you find B if B=A(1:2)?
use function find, and your problem is solved. A=[1 2 3 4; 5 6 7 8; 9 10 11 12]; B = A(1:2); find(A==B(1)) >>1 which is the...

6 years ago | 0

Question

HELP, HELP, HELP, PLEASE!!! brush data from 2 dimensional figure
Hi, everyone Please give any help if you know how to solve this problem. It should not be a problem at all, however, I have be...

6 years ago | 1 answer | 0

### 1

Question

data brushing is extremely slow
Hello everyone I am using matlab (2016 b) data brush to brush part of data from a picture I2, but it's extremely slow. Pleas...

6 years ago | 2 answers | 0

### 2

Thank you, James. I know MATLAB is case sensitive, but I didn't realize that I used low case of the second 'S' in my code. ...

6 years ago | 0

Question

Hi, everyone I got stuck by a very simple question. I simply can't believe that such a weird thing would happen here. I am us...

6 years ago | 2 answers | 0

### 2

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How to find the median of nonzero elements in each row of sparse matrix
Hi, everyone I have been harassed for a long time, any help will be greatly appreciated. I am looking for a computationall...

6 years ago | 1 answer | 0

### 1

Question

Low computation efficiency of simple sentence in MATLAB
Hi, everyone I have an computation efficiency problem here, I wish someone could help me out. here is part of my MATLAB c...

6 years ago | 1 answer | 0