Community Profile

# Thomas

Last seen: 7 Monate vor Aktiv seit 2011

Love MATLAB :)
Work with Wireless Sensor Networks, Medical Image processing (MRI,fMRi,DTI), High Performance Computing at UAB
Professional Interests: Parallel Computing, Supercomputing, Wireless sensor networks

#### Statistics

All

Abzeichen anzeigen

#### Content Feed

Anzeigen nach

Beantwortet
Storing values from nested FOR loop (array only saves last run of results)

etwa 4 Jahre vor | 6

| akzeptiert

Beantwortet
how to find out if a number is even or not
You could perform a modulo division mod(4,2) % Even number ans = 0 mod(5,2) % Odd number ans =1 Answer wi...

etwa 4 Jahre vor | 10

| akzeptiert

Beantwortet
Counting objects in an image
You could use techniques shown in many MATLAB image processing demos.

etwa 5 Jahre vor | 0

Beantwortet
how to save a string as a filename?
Maybe something like this for number=1:10 file_name = sprintf('case study_#%d.txt',number); save(file_name,....

fast 6 Jahre vor | 3

| akzeptiert

Beantwortet
Distributed and parallel computing without DCS
Hi Chuck, In order to perform distributed computing across multiple computers you need the DCS license. We have DCS running ...

mehr als 7 Jahre vor | 1

Beantwortet
Creating sub-matrices using one matrix
Look at the examples given here <http://stackoverflow.com/questions/13091193/how-to-select-a-submatrix-not-in-any-particular-pat...

mehr als 8 Jahre vor | 0

Beantwortet
matrix generation 1 to n*n or interval
n=10; a=1:n*n; out=reshape(a,n,n)'

mehr als 8 Jahre vor | 2

Beantwortet
Finding structure array entries with certain values
You could use something like this strs={'1' '2' '3' '4'} ind=find(ismember(strs,'4')) >> ind = 4

fast 9 Jahre vor | 1

Beantwortet
Datenum: how many seconds in a day?
IF my guess is right matlab considers every day as 86400 seconds.. only in leap years does datenum make sure an extra day is add...

fast 9 Jahre vor | 1

Beantwortet
Not enough input arguments
Are you giving it u as an array? try running it like this.. works fine.. u=1:5; cost_function(u) output is J =...

fast 9 Jahre vor | 0

Beantwortet
Delete duplicate rows from a large cell array
wit_dup={'2000-01-10 1:00' 'HCM' '268' '20' '260' '2345' '0' '90' '2000-01-10 1:00' 'HCM' '268' '20' '260' '2345' '0' '...

fast 9 Jahre vor | 0

| akzeptiert

Beantwortet
Is it possible to save . mat <4095x1384x2 double> file to txt file?
You can save it as slices data1=data(:,:,1); data2=data(:,:,2); and then save or he alternative would be to use resha...

fast 9 Jahre vor | 0

Beantwortet
How to read DICOM RT Structure?
Might want to try <https://github.com/ulrikls/dicomrt2matlab> or try RSInfo=dicominfo('RS.ZZ_YUNINN_.dcm'); dicom...

fast 9 Jahre vor | 4

| akzeptiert

Beantwortet
İ need to switch red and blue colors in RGB picture. How i can do that? my version of matlab is R2013a

fast 9 Jahre vor | 2

Beantwortet
Doing a plot within a FOR LOOP
some thing like this? clear for i = 0.04 : 0.01 : 0.06 B = -20000 + 57300*((1+i)^-20) figure() ...

fast 9 Jahre vor | 1

| akzeptiert

Beantwortet
How can I make subplots larger?
Do you just want to make the figure taller? x=1:10; y1=x.^0.5; y2=x; y3=x.^2; y4=x.^3; figure1=fig...

fast 9 Jahre vor | 4

| akzeptiert

Beantwortet
Undefined function 'acker' for input arguments of type 'double'.
acker is the old pole placement function using Ackerman's formula from the control system toolbox.. try which acker ...

fast 9 Jahre vor | 0

Beantwortet
can anyone provide me the code for motion detection in a video????????
Many of them are available in file exchange <http://www.mathworks.com/matlabcentral/fileexchange/18151-motion-detection-in-a...

fast 9 Jahre vor | 1

Beantwortet
how to get average of more than one (atleast 2288) images?
An example is given here <http://stackoverflow.com/questions/5689639/how-to-average-multiple-images-in-matlab/14222792#14222792>...

fast 9 Jahre vor | 0

Beantwortet
How to use parfor for fast matrix calculations with different dimensions???
You do not need to use 'parfor' or even 'for' to get to what you are trying (i.e. find 1's in the matrix). Is there a specific r...

fast 9 Jahre vor | 0

Beantwortet
How can I find the indices of a vector?
[r,c]=find(A>=0.123)

fast 9 Jahre vor | 0

Beantwortet
Is it possible to downgrade MATLAB?
You should get access to earlier releases if you buy a current license. Mine shows me as far back as R11.1 available for downlo...

fast 9 Jahre vor | 0

| akzeptiert

Beantwortet
swap columns of a matrix
You could also use out= fliplr(k_minus) This flips the matrix left-right <http://www.mathworks.com/help/matlab/ref/fliplr...

fast 9 Jahre vor | 2

| akzeptiert

Beantwortet
I'm trying to make a function to create a chirp signal with a clip distortion, when I run the function, It won't play and just displays columns, where is the problem?
run your code as follows a=SignalGen(10,200,1000,5,3,100); % suppress output Signal sound(a) % to hear

fast 9 Jahre vor | 0

| akzeptiert

Beantwortet
Surface area of a 3D-plot from a matrix.
I do not think MALTAB has a built-in function. (I might be wrong though) However a similar question has been answered here <ht...

fast 9 Jahre vor | 1

Beantwortet
how to find elements in an array
x = 1:100; y = 201:300; a=[ 215 250 283]; c=ismember(y,a) x(c) should give you 15 50 83

fast 9 Jahre vor | 1

Beantwortet
feval(symengine, 'partfrac' command error
You forgot the * between 14 and x feval(symengine, 'partfrac', 4/ (((x - 7)^2 + 4^2 )* (x^2+14*x + 65)))

fast 9 Jahre vor | 1

| akzeptiert

Beantwortet
How to change Elements in Matrix per row depending on their size in reference to a particular Element (without loop)
A laborious way of doing it.. B=[A(1,:);A(3,:);A(4,:)]; B(B >=3)=3; C=[A(2,:);A(5,:)]; C(C >=2)=2; Out=...

fast 9 Jahre vor | 0

Beantwortet
How do I reshape a dataset?
a= rand (2,4) size(a) b=a' size(b) Is this what you are looking for ? or b= reshape(a,4,[]); ...

fast 9 Jahre vor | 0

Beantwortet
How to add a folder permanently to matlab path?
You can put the addpath statement to startup.m Heres how to create startup.m <http://www.mathworks.com/help/matlab/ref/startu...

fast 9 Jahre vor | 2

| akzeptiert