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David J. Mack


UniversityHospital Zurich

Last seen: mer än 2 år ago |  Active since 2012

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Find me at https://www.researchgate.net/profile/David_Mack4

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Answered
how to compute running correlation coefficient
And again... Have a look at <https://ch.mathworks.com/matlabcentral/fileexchange/65342 MOVCORR> Greetings, David

ungefär 7 år ago | 1

Answered
How to compute sliding or running window correlation coefficient?
If someone encounters this problem, I have written a function in analogy to the MOVSUM function, which compute the moving Pearso...

ungefär 7 år ago | 0

Answered
Rolling correlation / moving correlation
Hey Mate, I have written a function in analogy to the MOVSUM function, which does exactly that: <https://ch.mathworks.com/...

ungefär 7 år ago | 0

Answered
How to find next number divisible by n
How about b = n * ceil(a / n) Greetings, David

mer än 7 år ago | 0

Answered
Find RR Interval in seconds
The obvious solution would be: rrInSec = rrInSamples / samplingRateInHz

mer än 7 år ago | 1

| accepted

Answered
Change legend width after reisze of legend line length
Hey Simon, this is an issue which pops up regularly, since the customization options of legends are currentyl (when I last ch...

mer än 7 år ago | 0

Answered
How to delete a plot in UIAxes?
You could store the handle to the fitted line in the UserData of the figure and then retrieve it every time the button is hit an...

mer än 7 år ago | 1

| accepted

Answered
Grouping multivariant data for Andrewsplot
Hey! So |andrewsplot| states that "The rows of X correspond to observations, the columns to variables". It seems that you hav...

mer än 7 år ago | 0

| accepted

Answered
How changing the loglog scale x and y axis?
Have you tried to use <https://ch.mathworks.com/help/matlab/ref/semilogy.html semilogy> instead of |loglog|, e.g.: semilogy...

mer än 7 år ago | 1

Answered
Increase nonzero values without deleting zeros
Hey monmatlab, simply use logical indexing: Y = X; isNonzero = X~=0; Y(isNonzero) = 10*Y(isNonzero); or the more ...

nästan 8 år ago | 1

| accepted

Answered
A very quick question
Hey Radoslav, In general, to convert a logical array to ids use |<http://www.mathworks.com/help/matlab/ref/find.html find>|. ...

nästan 8 år ago | 0

Answered
How to create a new matrix adding vectors of different size based on time
Hey Robert! First, a conceptual question: Can you make sure you have the same sampling interval & phase across all your signa...

nästan 8 år ago | 1

| accepted

Answered
Plotting a lattice with color coded nodes
Hey Bill! % Generate the random values on the 50x50, 2-dimensional lattice directly % using X = randi(imax,sz1,...,szN)...

nästan 8 år ago | 0

| accepted

Answered
How can I adjust the labels on contour lines in a 'meshc' 3D-plot?
Hey Ibrahim, have a look at <https://ch.mathworks.com/help/matlab/ref/contour-properties.html |Contour Properties|> - the |La...

nästan 8 år ago | 0

| accepted

Answered
how to reduce dimensionality of features by usin pca?
To get a simply answer (whitout really adressing the problem), have a look as <https://ch.mathworks.com/help/stats/pcares.html |...

nästan 8 år ago | 0

Answered
Replication factors must be a row vector of integers or integer scalars.
nFilters/16 is probably not an integer. Depending on your needs, try round(nFilters/16) instead or use a number of filters which...

nästan 8 år ago | 1

Answered
TEXTSCAN is my personal nemesis: Quotes strings with commas
Thanks Stephen for staying with me (you where right in the first place; reading the doc carefully helps)! I finally found my ...

ungefär 8 år ago | 0

Question


TEXTSCAN is my personal nemesis: Quotes strings with commas
Dear all, I thought I acquired some Matlab knowledge over the years. But |textscan| really makes me feel dumb. I can not fi...

ungefär 8 år ago | 3 answers | 0

3

answers

Answered
Replace elements in a SxS matrix with zero, in each column but in different rows
Hey Miroslav, have you looked at the |<http://www.mathworks.com/help/matlab/ref/sub2ind.html sub2ind>| function? Should be so...

ungefär 8 år ago | 1

Answered
What does "something = cell (size(session,1),1" mean/look like?
Hey Marie, the above creates a column cell with n elements, where n are the number of rows of session. Cheers, David

ungefär 8 år ago | 1

Answered
Import and find a specific number from a text file
Try use regexp: file='c:\Users\David J. Mack\Desktop\test.txt'; numFormat1 = {'[ ]{1,7}(\-?\d+\.\d{3})'}; %e.g. %12.3f ...

ungefär 8 år ago | 0

Answered
how to plot auto correlation and cross correlation function in a single figure?
The negative autocorrelation is the same as the positive as you use the same signal for the correlation. So if you want to pret...

ungefär 8 år ago | 0

Answered
3D plot of an equation with 3 variables
Hey Amruth, have a look at |<https://www.mathworks.com/help/matlab/ref/surf.html surf>|. Use the surf(x,y,z,c) syntax. Gre...

ungefär 8 år ago | 0

Answered
Creating an arbitrary number of displaced Gaussian
Hey Jason, <https://www.mathworks.com/help/matlab/ref/bsxfun.html BSXFUN> is your friend (and your enemy w.r.t. readability): ...

ungefär 8 år ago | 0

Answered
interp1 - rant
If its only about the 1x1xN array not working, simply use <https://www.mathworks.com/help/matlab/ref/squeeze.html squeeze>. E.g....

ungefär 8 år ago | 1

Answered
How can I label my EEG-data plotting in gui?
Is your data all in the same |axes| or in separate |subplot| s? In the first case use the |text| function and set its |'Unit'| p...

ungefär 8 år ago | 0

Answered
Counting Plotted Coordinates in image
If you have your 2xN dot matrix |dots| which presumably contain the x (row 1) and y (row 2) coordinates, then N is the number of...

ungefär 8 år ago | 0

Answered
No dublicates in for loop.
Hey Kian, I am not sure if I really understood your problem, but maybe the following solution helps: %Assuming NumeriskD...

ungefär 8 år ago | 0

| accepted

Answered
I have a datafile contains data sets (size 200* 15) .how can I apply on all the data a lowpass butterworth filter of 2-order with cutoff fre 10 HZ
Hey Rahul, use <http://www.mathworks.com/help/matlab/ref/filter.html FILTER> with the coefficients created with <http://www.m...

ungefär 8 år ago | 0

| accepted

Answered
How to get Ones along the diagonal
The built-in function <http://www.mathworks.com/help/matlab/ref/diag.html DIAG> is your friend: X = diag(ones(5,1)) Gree...

ungefär 8 år ago | 2

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