There are a couple of different ways you can collapse your matrix into a vector, depending upon how you want the contents of your matrix to fill that vector. Here are two examples, one using the function reshape (after first transposing the matrix) and one using the colon syntax (:): >> M = [1 2 … Read more
Try dynamic field reference where you put a string in the parenthesis as seen on the line defining stuff. S = struct(‘A’, [1 2], ‘B’,[3 4 5]); SNames = fieldnames(S); for loopIndex = 1:numel(SNames) stuff = S.(SNames{loopIndex}) end I concur with Steve and Adam. Use cells. This syntax is right for people in other situations … Read more
Please see the dir function as stated above. Please note that the dir function works on files and not on directories only. >> s = dir(‘c:\try.c’) s = name: ‘try.c’ date: ’01-Feb-2008 10:45:43′ bytes: 20 isdir: 0 datenum: 7.3344e+005
The +folder piece is a MATLAB package folder. If you place Tata.m in a location like +folder/Tata.m, it will be known to MATLAB as the class folder.Tata. If you place it in a folder like someOtherFolder/Tata.m, or someOtherFolder/@Tata/Tata.m, it will be known to MATLAB as Tata. It can be useful to place a classdef file … Read more
This is how I have solved this problem in the past: figure t=linspace(0,10,100); plot(t,sin(t)); hold on; h = zeros(3, 1); h(1) = plot(NaN,NaN,’or’); h(2) = plot(NaN,NaN,’ob’); h(3) = plot(NaN,NaN,’ok’); legend(h, ‘red’,’blue’,’black’); This will plot the additional points, but because the coordinates are at NaN they will not be visible on the plot itself: EDIT 26/10/2016: … Read more
Use CELLFUN %# find empty cells emptyCells = cellfun(@isempty,a); %# remove empty cells a(emptyCells) = []; Note: a(i)==[] won’t work. If you want to know whether the the i-th cell is empty, you have to use curly brackets to access the content of the cell. Also, ==[] evaluates to empty, instead of true/false, so you … Read more
Create a 3D matrix A = zeros(20, 10, 3); %# Creates a 20x10x3 matrix Add a 3rd dimension to a matrix B = zeros(4,4); C = zeros(size(B,1), size(B,2), 4); %# New matrix with B’s size, and 3rd dimension of size 4 C(:,:,1) = B; %# Copy the content of B into C’s first set of … Read more
Try this command Definitely works !! clear sound
You need to declare x as a global variable in every scope (i.e. function/workspace) that you want it to be shared across. So, you need to write test1 as: function test1() global x; x = 5; end
Try: A = [ 1 11 22 33 44 13 12 33 1 14 33 44 ]; idx = ( A(:,4)==33 ); A_new = A(idx,:) This is using logical indexing