Statistics
RANK
939
of 293.477
REPUTATION
76
CONTRIBUTIONS
1 Question
50 Answers
ANSWER ACCEPTANCE
0.0%
VOTES RECEIVED
16
RANK
11.430 of 20.032
REPUTATION
39
AVERAGE RATING
0.00
CONTRIBUTIONS
1 File
DOWNLOADS
2
ALL TIME DOWNLOADS
397
RANK
of 148.733
CONTRIBUTIONS
0 Problems
0 Solutions
SCORE
0
NUMBER OF BADGES
0
CONTRIBUTIONS
0 Posts
CONTRIBUTIONS
0 Public Channels
AVERAGE RATING
CONTRIBUTIONS
0 Highlights
AVERAGE NO. OF LIKES
Feeds
Question
How to avoid Excel using Matlab
Hey, I am about to finish my studies and with it, probably, my Matlab usage, as most employers favor Excel. I was looking for me...
bijna 13 jaar ago | 1 answer | 0
1
answerprogramming a PDE in Matlab
You already have written it in a ode-form, i.e. first temporal derivative on LHS. The RHS only needs the correct implementation ...
bijna 13 jaar ago | 0
Problem with matlab
Your function should assign values to m and X depending on the value of t. Note that t in the solver can take any value in your ...
ongeveer 13 jaar ago | 1
Using an iterative method with scalar functions/function handles (help me fix this code)
In the doc of fzero 'Find root of continuous function of one variable', which you clearly need here. Doc of minres 'find a mi...
ongeveer 13 jaar ago | 0
How can I select between two solutions?
This is a standard quadratic formula, put it in the form a*y^2+b*y+c=0 and the solutions are y1=(-b+sqrt(b^2-4*a*c)...
ongeveer 13 jaar ago | 0
How to obtain accurate fast fourier transformation
For your frequencies, you make a mistake in your frequency array fs=Datapoints/Length; f = fs/2*linspace(0,1,NFFT/2+1); ...
ongeveer 13 jaar ago | 1
| accepted
Reading numbers from general text-file
This is not a very nice solution, but it worked for me fid=fopen('test.txt'); C = textscan(fid, '%s'); C=C{1}; a=[]; fo...
ongeveer 13 jaar ago | 1
Simulation of charged particle in matlab
You probably want to have something like fun=@(t,x) [x(4:6);cross(x(4:6),q/m*B)]; t=linspace(0,tend,1e3); [t,x]=ode45(fun...
ongeveer 13 jaar ago | 1
How can I convert a system with delay from continuous to discrete and from discrete to continuous and the result be the same?
In that case the sample time in tf should be an integer times the sample time in c2d. You can try it for arbitrary a and integer...
ongeveer 13 jaar ago | 1
nonlinear least squares fit
t is a row-vector while data is a column-vector. Change it to t=(1:n)'; Btw, I got x= 0.0012 0.1046 -7...
ongeveer 13 jaar ago | 0
Double Prime
xlabel('test''''') gives you an xlabel as test'' You need double primes in strings for a single prime.
ongeveer 13 jaar ago | 0
Replace zeros with NaN's - when there are already NaN's in the matrix?
Change to double first: F=double(F); F(find(~F))=NaN; Just curious; why would you need this?
ongeveer 13 jaar ago | 0
how can I convert a string to an expression which "symvar" can search for identifiers?
insertfunction='cos(pi*x - beta1)' >> symvar(insertfunction) ans = 'beta1' 'x'
ongeveer 13 jaar ago | 1
Out of memory using mrdivide
Short about inv(B); it has 191*2+1 diagonals (36288/189=192, but this is for one of the triangles and includes the main diagonal...
ongeveer 13 jaar ago | 0
How to replace the elements of a matrix using the conditions if,else?
Just implement it for multiple matrices using element multplication: Logical=(L>0.5).*(M==0).*(N<0.5); T=-Logical+(M+1)....
ongeveer 13 jaar ago | 0
How to replace the elements of a matrix using the conditions if,else?
You don;t need the if-statment here but only the logicals. This gives you a matrix with ones where X is larger than 0.5 and zero...
ongeveer 13 jaar ago | 1
Optimal arrangement of a small vector within a lager vector
Allow me to define: N=length(b); M=length(a); Q=3;%number if placements p0=ones(Q,1);%starting vector for placements w0...
ongeveer 13 jaar ago | 1
Out of memory using mrdivide
Some follow-ups: a) Where do you need this for? Your result will lose much of its sparcity. Maybe if you post your entire pro...
ongeveer 13 jaar ago | 1
How to create sounds with specific characteristics?
A window can be anything going from zero to unity. In this case it should reach unity after 5ms from the start. You should know ...
ongeveer 13 jaar ago | 0
| accepted
Discrete Fourier Transform of large data sets
Is the size of the result a problem too? Otherwise you can add zeros to a segment perform the transform and in the end take the ...
ongeveer 13 jaar ago | 0
| accepted
Out of memory using mrdivide
I agree with Jan; if you have the same number of non-zero elements you probably filled the main diagonal. In that case spdiags w...
ongeveer 13 jaar ago | 0
| accepted
Why do i have to take the abs when using fft and ifft?
Walter means that discrete Fourier transforms are not exactly as what one would expect from their continuous counterparts. You c...
ongeveer 13 jaar ago | 0
| accepted
How do I reset axis ticks to normal after I modify them?
You can use set(gca,'XTickLabel',xdate) where xdate is your x-axis data. With datetick you're just changing the labels,...
ongeveer 13 jaar ago | 0
row-echelon matrix form (not reduced)
With rref you will produce the reduced row echelon form, see doc rref But a non-reduced form is not unique. See for ins...
ongeveer 13 jaar ago | 1
How do I find the boundaries of a value in a matrix?
[rows,cols]=find(I==8) rows = 3 2 3 4 2 1 2 cols = 2 3 ...
ongeveer 13 jaar ago | 2
How to plot frequency response in matlab
you could get familiar with the wintool and wvtool gui's. I think these tools are really straight forward. Good luck!
ongeveer 13 jaar ago | 0
How to make a 0.001 difference ?
a=1:100; b=sort([a a+0.001]);
ongeveer 13 jaar ago | 0
| accepted
Kolmogorov
I know that CDF has to be of size Nx2, but you want to have M of those in your for-loop. So you have to use CDF(:,:,j), which is...
ongeveer 13 jaar ago | 0
Strings
Depending on your os the slashes could be different. For instance on opensuse I have to use / path='temp/matlab.mat'; sa...
meer dan 13 jaar ago | 0