Conrad

Attivo dal 2012

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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...

circa 11 anni fa | 0

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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 ...

circa 11 anni fa | 1

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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...

circa 11 anni fa | 2

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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

circa 11 anni fa | 1

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Passing a matlab array into C# DLL
Hi John, what about creating a wrapper method with signature double[,] RGBConvertWRP(int ncols, ...

circa 11 anni fa | 0

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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...

circa 11 anni fa | 0

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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; ...

circa 11 anni fa | 0

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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...

circa 11 anni fa | 0

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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...

oltre 11 anni fa | 0

Risposto
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)...

oltre 11 anni fa | 0

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Risposto
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...

oltre 11 anni fa | 0

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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);

oltre 11 anni fa | 0

Risposto
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...

oltre 11 anni fa | 0

Risposto
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]);

oltre 11 anni fa | 1

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Risposto
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(:,...

oltre 11 anni fa | 0

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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...

oltre 11 anni fa | 0

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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...

oltre 11 anni fa | 0

Risposto
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....

oltre 11 anni fa | 1

Risposto
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...

oltre 11 anni fa | 1

Risposto
Xlsread and xlswrite; easy small help
You could try this: excelFileName = 'Test.xls'; f1 = sin((0:360)*pi/180)'; success = xlswrite(excelFileName,p); ...

oltre 11 anni fa | 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) ...

quasi 12 anni fa | 0

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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...

quasi 12 anni fa | 0

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Risposto
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];...

quasi 12 anni fa | 2

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Risposto
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))...

quasi 12 anni fa | 1

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Risposto
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; ...

quasi 12 anni fa | 0

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Risposto
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;...

quasi 12 anni fa | 1

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Risposto
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);

quasi 12 anni fa | 0

Risposto
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 = ...

quasi 12 anni fa | 1

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Risposto
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...

quasi 12 anni fa | 0

Risposto
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...

quasi 12 anni fa | 0

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