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Luuk van Oosten


Last seen: meer dan 3 jaar ago |  Active since 2014

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Professional Interests: Mass Spectrometry, Peptides & Proteins, High-throughput screening, Data mining.

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Answered
Error while using extractFeatures function
Hello, Could be multiple reasons why you get this error. Did you check this? It lists a couple of causes and solutions to your...

bijna 5 jaar ago | 0

Answered
Plot data arrays from loaded data structure file
Hello Shane Palmer, You are not the first one to encounter this problem. For approaches to solve your problem, have a look her...

ongeveer 5 jaar ago | 0

| accepted

Answered
I am using findpeaks (data,locations) func to find time period of trigonometric function. Values(max,location) for only one peak are getting stored, hence time period is coming out to be zero. please help.
Dear Abhijeet, I am not sure what you mean with "hence time period is coming out to be zero", but I do believe I can be of som...

meer dan 5 jaar ago | 1

| accepted

Answered
How to plot as lines instead of dots
Dear shdotcom, Looks like you could use surf and mesh for that job. If you need it to plot it exactly as your example, keep ...

meer dan 5 jaar ago | 0

Answered
How to resampling a signal (not interp1) which has a non-uniform sample frequency?
Sounds like a perfect job for msresample, so you can make two signals with the same sample rate to your liking. Use something li...

meer dan 5 jaar ago | 1

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Answered
Plot ECG and ABP together
You mean using two different y-axis for each signal like this?

meer dan 5 jaar ago | 0

Answered
How can I extract data from a table and put it into a new one?
Beste Tessa, You almost wrote it yourself already, if I understand your problem correctly....? You already wrote in pseudocode ...

meer dan 5 jaar ago | 0

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Answered
Mapping between the probe set ID and the corresponding gene symbol
Dear Swarnambiga A, Hope this is not too late (and what you are looking for, I'm more into proteins...), but I'll give it a ...

meer dan 5 jaar ago | 1

| accepted

Answered
how to do ecg classifications
Dear Khouloud Daboussi, If you now have a big table with all your features (DWT, variance, mean, etc) and the myocardial inf...

meer dan 5 jaar ago | 0

| accepted

Answered
Change the Marker size and color in the legend of a scatter plot
To set the properties of your legend see here.

meer dan 5 jaar ago | 0

Answered
fastest way of amino acid composition feature extruction using matab? my codes are working fine but need a simplify it further
Although your question is poorly formulated, and I agree with Image Analyst about the formatting of your code.... Here is my a...

bijna 6 jaar ago | 0

Answered
How to remove a baseline without using sgolayfilt
As far as I know, sgolayfilt does not subtract the background signal (what I think you mean when you refer to 'same baseline'), ...

ongeveer 7 jaar ago | 0

Answered
how to split dna sequence into three letters each
Dear Aarsha mv, I assume you want to get the codons from your piece of DNA, but correct me if I am wrong. Let us take th...

meer dan 7 jaar ago | 1

Answered
Can I use nwalign to align one sequence to the reverse-complement of a second sequence?
Dear Dan Allison, Wouldn't it be easier if you use the <https://www.mathworks.com/help/bioinfo/ref/oligoprop.html oligoprop ...

meer dan 7 jaar ago | 1

Answered
Is it possible to seqlinkage with a maximum parsimony or minimum evolution method?
Dear Anton Huegel, I am not really familiar with constructing phylogenetic trees in MATLAB, but I believe you could use the ...

meer dan 7 jaar ago | 1

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Answered
Explicitly set BP/Pixel in Biological Sequence Viewer?
Dear David Roe, I am not really sure what you mean by 'the same scale', but I assume for now multiple aligned sequences... if...

bijna 8 jaar ago | 0

Answered
Hello everybody, Iam Ram kumar. May i know how to calculate phi and psi angles with x,y,z co-ordinates from PDB files.. is there any formula to do ..?
Dear Ram Kumar, You could use <https://www.mathworks.com/help/bioinfo/ref/ramachandran.html Ramachandran>. If you do somethi...

bijna 8 jaar ago | 3

Answered
getgenbank function not working
Dear Aiden, This problem is probably due to some recent changes in the web protocol from the NCBI (see <https://www.ncbi.nlm...

bijna 8 jaar ago | 1

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Answered
Train SVM through classification Learner
Dear Tahira Batool, The classificationLearner app is not able to import multiple variables from the workspace and work with ...

ongeveer 8 jaar ago | 2

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Answered
How Matlab Classification Learner calculate a model accuracy
Dear Alessandro, Reproducible results can be obtained if one uses a <http://nl.mathworks.com/help/matlab/math/creating-and-c...

ongeveer 8 jaar ago | 1

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Answered
I am new to programming. I need to build a decision tree to classify setosa (class =1 ) against combined virginca and versicolor (class = 2) in matlab
Dear Kunal, I think you will find all you need <https://www.mathworks.com/help/stats/examples/classification.html#zmw57dd0e3...

ongeveer 8 jaar ago | 0

Answered
Estmated time required for my following program
Dear Taher, How long such a programm will take to run depends on many things (both you hardware & your software). But... you...

ongeveer 8 jaar ago | 1

Answered
How to pre-process Next Generation Sequencing data using MATLAB?
Dear Ehsan, The page you refer to is a good start to get familiar with processing NGS data, but there are (a lot more!!) fun...

ongeveer 8 jaar ago | 0

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Answered
Compare sequence alignments of datasets
Dear Raffael, This is possible in MATLAB. I suggest you have a look at <http://www.mathworks.com/help/bioinfo/sequence-alignm...

ongeveer 8 jaar ago | 0

Answered
I Have this scoring matrix, I want to change just the first column and row from zeros to 0, -2, -4, -6, -8 and so on. I don't know how to change it. any help please ??
Just to be sure: is the following what you are trying to do (just implemented for the first column though)? for i = 1:lengt...

ongeveer 8 jaar ago | 0

Answered
"Attempt to reference field of non-structure array" error when using Makemid Command
I'm not really sure, because your question does not give much specific information about your situation (such as the actual name...

ongeveer 8 jaar ago | 0

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Answered
Can any1 please explain me what does X= 0.01 : 0.01 : 2; and li=30/72 meant in ECG signal generation using Fourier series work done by R.KARTHIK sir. Iam new in MATLAB.Its very urgent.
X= 0.01:0.01:2; means X-values vary from 0.01 to 2 with a step size of 0.01. So you end up with X being 200 values equall...

ongeveer 8 jaar ago | 1

Answered
IN NEED OF MATLAB CODE FOR ENVELOPE ANALYSIS.
Maybe have a look <https://www.mathworks.com/matlabcentral/fileexchange/?utf8=%25E2%259C%2593&term=envelope here>, could be a go...

ongeveer 8 jaar ago | 0

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Answered
base line correction of a non uniformly spaced spectral data points
Dear Abdul Kalam, You could resample your non-uniform spaced spectral data to obtain uniform spaced spectral data. I am ...

ongeveer 8 jaar ago | 1

| accepted

Answered
I am getting an error instruction when I rerun the Signal processing toolbox function 'resample' with a new vesion of Matlab 2016a that I have just installed? How do I ensure the toolbox in in the call pathway?
I think you will find your answer somewhere around <https://www.mathworks.com/matlabcentral/answers/5200-undefined-function-or-m...

ongeveer 8 jaar ago | 0

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