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Feeds
Domanda
Golf Recamán's sequence
Recamán's sequence described in pseudo-code is as follows: A(0) = 0 A(n) = A(n-1) - n if A(n-1) - n > 0 and is new, else...
oltre 11 anni fa | 1 risposta | 0
1
rispostaDomanda
Can I find out in which release a function was introduced?
Sometimes I get error messages saying stuff like: Undefined function 'savefig' for input arguments of type 'char' or ...
quasi 12 anni fa | 2 risposte | 1
2
risposteDomanda
x = 0:0.1:10... What's going on, really?
Please have a look at the following example: A = 0:0.1:0.4; find(A == 0.3) ans = Empty matrix: 1-by-0 fi...
quasi 12 anni fa | 2 risposte | 2
2
risposteFinding integers between two vectors
A= [4.54 5.11 9.58 15.04]; B= [1.01 3.2 5.5 16.98]; C = sort([A; B]); C(1,:) = ceil(C(1,:)); C(2,:) = floor(C(...
oltre 12 anni fa | 0
| accettato
Domanda
Using bsxfun for non-numeric data
Is there an equivalent to bsxfun for non-numeric data? For example, I want to compare all pairs of strings stored in two cell...
quasi 13 anni fa | 3 risposte | 3
3
risposteDomanda
Find row number of elements
Hi, I have a list of branches, |BL|, and a list of nodes, |nodeList|. BL has two columns, containing to-from nodes for each b...
quasi 13 anni fa | 1 risposta | 0
1
rispostajoin two matrices together
C = reshape([A; B],177,8) Good luck! - Rob
quasi 13 anni fa | 1
| accettato
what is the meaning of BW = ~ BW?
It gives you back the inverted binary matrix BW. That means, all 1's turns to 0's, and vice versa. In plain text: BW = not...
quasi 13 anni fa | 1
multiplication table in matlab
Another one-liner: cumsum(meshgrid(1:10))
quasi 13 anni fa | 4
Domanda
Format axes in plot
Is it possible to color a single number (or a set of numbers) on one of the axes in Matlab? Suppose I have a plot: plot(...
quasi 13 anni fa | 1 risposta | 0
1
rispostaDomanda
Legend in biograph plot
I have a |biograph| object, and I want to "color-code" the edges and vertices. Is it possible to get legends in the biograph...
quasi 13 anni fa | 0 risposte | 1
0
risposteMean of 2 arrays
One way would be: mean(mean([imag{1} imag{2}])) If the dimensions don't match: mean([imag{1}(:); imag{2}(:)])
quasi 13 anni fa | 1
Adding two different size matrices
You can't add matrices of different dimensions. The transpose of A has dimension (50x100) Think of it: A = [1 2 ...
quasi 13 anni fa | 0
| accettato
Domanda
Speed up sparse matrix calculations
Is it possible to speed up large sparse matrix calculations by e.g. placing parantheses optimally? What I'm asking is: Can I ...
quasi 13 anni fa | 0 risposte | 0
0
risposteExplanation of the code
The input to |cosd| and |sind| are in degrees, whereas it is in radians for |cos| and |sin|. l = sind(alpha)*b; % the verti...
quasi 13 anni fa | 1
Domanda
Profiling for cells instead of functions
I have a function that in turn calls many more functions. I want to use the profiler to identify what parts of the code is most ...
quasi 13 anni fa | 1 risposta | 1
1
rispostaDomanda
Finding the difference between columns in matrix without loops
I have the results from an iterative process, where the results from each iteration is placed beside eachother, like this: ...
quasi 13 anni fa | 1 risposta | 0
1
rispostaNot enough input arguments
Use lower case m, or some other letter that can't be mixed with upper case M, as indices in your for-loops, and you'll get there...
quasi 13 anni fa | 0
Please tell me what's wrong here with the exp (1j*theta)
The reason is that: 5 rad = -1.2832 rad % (-1.2832 + 2*pi = 5) That is: x = x + n*2*pi; % where x is an angle in...
quasi 13 anni fa | 0
| accettato
Not enough input arguments
How do you call this function? You need input arguments when running it (you can't press F5 or something similar). You co...
quasi 13 anni fa | 0
| accettato
Help with Basic 2D Contour Plot
Follow the instructions from Friedrich, but flip the matrix around before you plot it. Now, Z(1,1) is in the origin, Z(1,2)...
quasi 13 anni fa | 0
Help with Basic 2D Contour Plot
Will this work for you? q = zeros(4); for s=[0:1:3], for t=[0:1:3], q(t+1,s+1)=triarea(s,t) end...
quasi 13 anni fa | 0
how can I create a vector with unknown length?
The most intuitive (and simple to implement) is probably bubble sort: <https://en.wikipedia.org/wiki/Bubble_sort> Since th...
quasi 13 anni fa | 1
How to shift the origin or how to make median of the data to be origin or zero?
Do you just want to substract the median value? In that case: cc = aa-median(aa); Now the median of cc = 0. Hope it h...
quasi 13 anni fa | 0
matrix manipulation and components
Is this what you're asking for? A(A>3.1) - Rob
quasi 13 anni fa | 2
| accettato
How create serial RLC circuit in Simulink?
It looks as though your intial conditions are 0 for both integrators. Are you supposed to simulate the system in steady-stat...
quasi 13 anni fa | 0
traversing a long matrix
I think this should work ind = find(A(:,1) == A(:,2)); - Rob
quasi 13 anni fa | 0
| accettato
Domanda
Strange results from tic / toc.
I'm checking the running time of a function using tic/toc. I write the following in the command window (and execute it simultane...
quasi 13 anni fa | 1 risposta | 1
1
rispostaFilling vector with a condition.
Like this? A = [1 2 -3 0 4 0 -5 0 6]; B = 10:19; C = zeros(1,length(A)); C(A>0) = B(A>0) C = ...
quasi 13 anni fa | 2
I can correct the error. Help me please!!
This should work: [X,Y] = meshgrid(x,y); f = sin(power(X,2)-power(Y,2)) Hope it helps =)
quasi 13 anni fa | 0
| accettato
