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How to find relevent principal component .
Calculate the quantity: cumsum(evalues)./sum(evalues) The will show you the cumulative variance explained by keeping the...
plus de 12 ans il y a | 0
| A accepté
How to Cope XLS Worksheet using Matlab
Hi Bill, you can use dos commands from within MATLAB to copy the file: original_file = 'orginal_file_name'; copied_file ...
plus de 12 ans il y a | 1
sorting a time series
You need to use the optional output from the sort function that contains the sort order. [Y, idx] = sort(time_series); Z...
plus de 12 ans il y a | 2
| A accepté
Apply a mask to 4D medical images in a vectorized way
Something like this: fV = V.*M(:,:,ones(1,size(V,3)),ones(1,size(V,4))); Conrad
plus de 12 ans il y a | 1
Passing a matlab array into C# DLL
Hi John, what about creating a wrapper method with signature double[,] RGBConvertWRP(int ncols, ...
plus de 12 ans il y a | 0
Sorting multi Dimension matrix
Hi, you need to sort along the third dimension: % Create dummy data. fset(:,:,1) = rand(5,16); fset(:,:,2) = zeros(5...
plus de 12 ans il y a | 0
| A accepté
Delete a cell by a criterion???
Hi Thor, try the following: % Create dummy data. S = cell(1,2,2); l1(288,3).Value = 1; l2(280,3).Value = 1; ...
plus de 12 ans il y a | 0
| A accepté
How do I insert values into my bar plot (with 2 columns per x value)?
You can try something like this: A = [1 2 3 4 5]; B = [4 7; 2 9; 3 7; 4 8; 1 3]; bar(A,B); xOffsets = [-0.16...
plus de 12 ans il y a | 0
ask for reference of SOM and clustering using Matlab
For an introduction see: <http://davis.wpi.edu/~matt/courses/soms/>. You could also try the toolbox: <http://www.cis.hut.fi/p...
presque 13 ans il y a | 0
Change equation in fsolve inside a loop
Try using anonymous functions: f1 = @(x) [x(1)+x(2)*x(2)+7*x(3) ;log(x(1))+exp(x(2))+x(3);3*x(1)+x(2)*x(3)+2]; f2 = @(x)...
presque 13 ans il y a | 0
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write variable in symbolic way
Try this: g = 1; x = ones(1,10); A = @(i) x(i+3*g)/(x(i+4*g)+x(i+5*g)); You can then use A(1) etc...
presque 13 ans il y a | 0
plz anyone solve the following question for me in matlab and reply quick.regards
Try this X=[-4 -1 0 2 10]; Y=[-5 -2 2 5 9]; [~,idx] = find(X>Y);
presque 13 ans il y a | 0
sum a column depending on another column
Something like this: % Dummy data. A =[ NaN 6 NaN 1;... NaN 9 NaN 0;... NaN 10 NaN 1]; idx = A...
environ 13 ans il y a | 0
Make no space between axes of a figure with boundaries of that figure windows
You could do the following: h1=figure; plot(rand(10)); set(gca,'Position',[0 0 1 1]);
environ 13 ans il y a | 1
| A accepté
problem with an if statement
Okay, think I know what you mean... this should do it. c5 = [A(2:end,5); NaN]; idx = ((A(:,4)==1)|(A(:,4)==2))&(A(:,...
environ 13 ans il y a | 0
| A accepté
Recommended steps to deal with a slow loop
I would recommend that you first focus on what happens inside the for loop... why is it taking so long? Get a complete breakdown...
plus de 13 ans il y a | 0
How to find equation of curve if just graph is given
You will have to make some assumptions about the functional form of the curve... for example if you know the curve is of the for...
plus de 13 ans il y a | 0
Mapping a graph on a sphere.
See the code below. It shows how to do it for two points but this is really all you need, just do the same for the other points....
plus de 13 ans il y a | 1
how can i define an array with different increments?
Something like this t = [ 0:0.1:1,... % increment of 0.1 1.2:0.2:4,... % increment of 0.2 4.3...
plus de 13 ans il y a | 1
Xlsread and xlswrite; easy small help
You could try this: excelFileName = 'Test.xls'; f1 = sin((0:360)*pi/180)'; success = xlswrite(excelFileName,p); ...
plus de 13 ans il y a | 0
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Initialization of array of structure
The following code should do the trick: function is = StructInit(s) is = s; if isstruct(s) ...
plus de 13 ans il y a | 0
plotyy does not what i want...
Hi Florian plotyy(x1,y1,x2,y2) The length of y1 must be the same as x1 and the length of y2 must be the same as x2 but x...
plus de 13 ans il y a | 0
| A accepté
how to change the colors of bars in a bar graph?
You could try a similar approach to the one given below (just extend it for your purposes): p1X = [1 2 3]; p1Y = [1 4 5];...
plus de 13 ans il y a | 2
| A accepté
In a cell with matrix entries, loop through to delete empty matrices
Let R denote your cell array that contains the matrices, then the following should suffice: K = R(~cellfun(@isempty,R))...
plus de 13 ans il y a | 1
| A accepté
In a cell with 255x1 entries, find the intersection of each entry list with all other entry lists
Hi Rebecca, you could try this: C = { [ 1 2 3; 4 5 6; 2 3 1]; [ 1 3 3; ...
plus de 13 ans il y a | 0
| A accepté
strings comparison with if then in array
Hi Udiubu, you can use strcmp: strcmp(alpha(x,7),'miss') You can also get rid of the for loop by using logical indexing;...
plus de 13 ans il y a | 1
| A accepté
problem in inserting a diagnol
A = [ 1 2 3;... 4 5 6;... 7 8 9]; A(1:(length(A)+1):numel(A)) = 2*diag(A);
plus de 13 ans il y a | 0
How to make a simple gui to plot a scatter graph?
Hi Kokalz, the code below should get you started: function DemoGUI() % Initialise variables: excelFileName = ...
plus de 13 ans il y a | 1
| A accepté
How can I color code lines in graphs depending on quality of data?
Hi Viktor, you can try something like this: t = 0:0.001:2*pi; x = [sin(t);2*sin(t)]'; y = [cos(t);2*cos(t)]'; % Create d...
plus de 13 ans il y a | 0
how to add the sequences in the mat lab?
Did you mean something like this? A = [1 2 3 4]; B = [1 2]; B = [B zeros(1,length(A)-length(B))]; B will the...
plus de 13 ans il y a | 0
| A accepté
