Conrad

Aktiv seit 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...

mehr als 11 Jahre vor | 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 ...

mehr als 11 Jahre vor | 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...

mehr als 11 Jahre vor | 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

mehr als 11 Jahre vor | 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, ...

mehr als 11 Jahre vor | 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...

mehr als 11 Jahre vor | 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; ...

mehr als 11 Jahre vor | 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...

mehr als 11 Jahre vor | 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...

mehr als 11 Jahre vor | 0

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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)...

mehr als 11 Jahre vor | 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...

mehr als 11 Jahre vor | 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);

mehr als 11 Jahre vor | 0

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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...

fast 12 Jahre vor | 0

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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]);

fast 12 Jahre vor | 1

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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(:,...

fast 12 Jahre vor | 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...

fast 12 Jahre vor | 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...

fast 12 Jahre vor | 0

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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....

fast 12 Jahre vor | 1

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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...

fast 12 Jahre vor | 1

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

fast 12 Jahre vor | 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) ...

etwa 12 Jahre vor | 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...

etwa 12 Jahre vor | 0

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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];...

etwa 12 Jahre vor | 2

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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))...

etwa 12 Jahre vor | 1

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Beantwortet
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; ...

etwa 12 Jahre vor | 0

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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;...

etwa 12 Jahre vor | 1

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Beantwortet
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);

etwa 12 Jahre vor | 0

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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 = ...

etwa 12 Jahre vor | 1

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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...

etwa 12 Jahre vor | 0

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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...

etwa 12 Jahre vor | 0

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