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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...

11 years 前 | 0

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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)...

11 years 前 | 0

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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...

11 years 前 | 0

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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...

11 years 前 | 1

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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...

11 years 前 | 0

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matrix manipulation and components
Is this what you're asking for? A(A>3.1) - Rob

11 years 前 | 2

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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...

11 years 前 | 0

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traversing a long matrix
I think this should work ind = find(A(:,1) == A(:,2)); - Rob

11 years 前 | 0

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提问


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...

11 years 前 | 1 个回答 | 1

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Filling 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 = ...

11 years 前 | 2

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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 =)

11 years 前 | 0

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How to determine the position of an integer
If you want to use the |find| function: pos = find(d==3);

11 years 前 | 0

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How to get the desired frequency in simplified synchronous machine?
The electrical frequency is, as stated in the comments: f_elec = poles * f_mec / 2 I was wondering what you were doing, ...

11 years 前 | 0

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??? Subscript indices must either be real positive integers or logicals.
Is this what you're trying to do? %% Don't run this part A = magic(4); %% Run this part by itself x = 0.8; f ...

11 years 前 | 0

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My input video is in the format of mp4. Does matlab supports this file format?
Should be unnecessary to ask this question in a forum. You can google these things very easily. The answer is yes. <http:/...

11 years 前 | 0

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Finding the indices of all edges within k steps from a chosen line in an adjacency matrix
I have a function where I can find all nodes k number of steps from any initial set of nodes in a sparse adjacency matrix. Norma...

11 years 前 | 0 个回答 | 0

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trying to right code to generate matrix for three different frequency
w = [100 200 400]; A = zeros(2,2,3); B = zeros(1,2,3); C = zeros(1,2,3); for i = 1:3 A(:,:,i) = [0 1;...

11 years 前 | 0

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Undefined function or variable 'in'.
Well the reason is that you haven't defined 'in' anywhere. My guess is that the input variable should be named 'in'. You hav...

11 years 前 | 0

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function performance, same functions has very different speed
I believe this is due to the way matrices are stored in Matlab. A matrix is stored column-wise, as below: A = [1 2 3;4 ...

11 years 前 | 0

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How to generate a system of four equations in four unknows to be solved in a matrix?
If you are familiar with solving linear equations on matrix form by hand, you start of the same way: A*x = b, where b = the v...

11 years 前 | 0

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Finding all edges (and nodes) within X steps from a chosen line in an adjacency matrix
I have found a good answer to my question above (Thanks to Dr_Sam!). 1: Add 1 on the diagonal of the matrix A. 2: Build a...

11 years 前 | 1

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Finding all edges (and nodes) within X steps from a chosen line in an adjacency matrix
I have a nx2 matrix of to-from nodes for a large network structure. I have used this to create a sparse adjacency matrix which I...

11 years 前 | 1 个回答 | 0

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How to graph a connectivity/adjacency matrix?
I want to graph the structure of a network (a power grid). I have a list containing to-from nodes for each branch. The BIOGRA...

11 years 前 | 1 个回答 | 0

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Start matlab on windows 8
If Matlab is installed, and unless your computer is acting up, this should work: 1. Press the windows button, (to enter the s...

11 years 前 | 0

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How do I create a vector with the first day of each month?
Not quite sure what you are asking for here. I assume you have a vector with all days from Monday-Sunday, and you know which...

11 years 前 | 0

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Calculating parts of the sparse matrix inverse
I have a sparse symmetric matrix H, containing on average 4 non-zero elements per row/col, and a sparse vector M with only two n...

11 years 前 | 1 个回答 | 1

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