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the cyclist


3.645 total contributions since 2011

Data scientist at Cohen Veterans Bioscience; Obsessive runner. Professional Interests: Predictive modeling, statistics.

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Answered
the command after "if" not work after awhile
My best guess here is that you are running up against the limitations of floating point computation. For example, try putting th...

2 Tage ago | 2

| accepted

Answered
How do I get a bar chart in the newest version but with the colors from an older version?
There are utilities (e.g. "Digital Color Meter" on a Mac) where you can hover your cursor over a pixel on the screen, and it wil...

3 Tage ago | 0

Answered
How a matlab function or toolbox works?
A cursory look at the software engineering career postings on the Mathworks site suggests that current development is in C, C++,...

3 Tage ago | 2

Answered
Random Test Dataset With More Values Of One Type
One simple approach would be: split your dataset into the y=0 set and the y = 1 set do the 80/20 training/test split on the y=...

3 Tage ago | 1

Answered
is there any way to use both Spearman and Euclidean distance using knnsearch ?
No, they cannot both be used within a single call to knnsearch. I don't really see how "merging" would really be that helpful. ...

4 Tage ago | 1

| accepted

Answered
How can I separate complex numbers from the other in a matrix?
% Example data z = [1 1+2*i 3 4+5*i] mask = imag(z)==0; The variable mask is a logical variable that is TRUE at the locatio...

16 Tage ago | 2

Answered
Finding the locations of non-similar value cells
I'm not certain I understand exactly what you want, but this is my best guess: % Define input arrays CA = {[-10 2],[6;6]}; CB...

25 Tage ago | 0

Answered
NIST Randomness test execution
The answer from Peter Perkins here is old, but I believe it is still accurate.

28 Tage ago | 0

| accepted

Answered
For every matrix row find rows within the same matrix that have more than one common element in same index below the row
Here is a start at a solution for you. A = [ 1 2 3 1 4 5 3 4 5 1 2 4 1 2 5 2 4 5]; for i = 1:size(A,1)-1 r{i} = f...

28 Tage ago | 0

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Answered
Serious mistake installing Matlab
Does this documentation page about uninstalling MATLAB help?

etwa ein Monat ago | 0

Answered
How to write cell arrays in Excel?
I use cellwrite from the File Exchange.

etwa ein Monat ago | 0

Answered
I would like to call a row element from a matrix however, the row is written inside another matrix
If T is the temperature matrix, then it sounds like maybe you want to do T(A(1)) Or use a loop to access more rows of T? for ...

etwa ein Monat ago | 1

Answered
ismember 0×0 empty logical array to logic
Making a huge guess here, but are you sure you don't mean ~ismember(ID,A) rather than ~ismember(A,ID) Then, assuming ID is a...

etwa ein Monat ago | 0

Answered
I have a csv file, which contains some 0 and some non-zero values. How to get the index of the non-zero values in the csv file?
data = csvread('Book4.csv'); idx = find(data);

etwa ein Monat ago | 1

| accepted

Answered
replace random data with dataset
My best guess at your error is that your randomly generated data consists of two [1 x numP] row vectors, but when you read your ...

etwa ein Monat ago | 0

Answered
How to find a polynomial of degree 2 that fits the given data with minimal approximation error? and then sketch discrete points and the graph of the polynomial
You could use the polyfit and plot commands (and of course a few more fundamental calculations like subtraction) to do this.

etwa 2 Monate ago | 0

Answered
draw circle through two given points in plot
In general, there are an infinite number of circles that pass through two given points. If you don't care which one, then one p...

etwa 2 Monate ago | 1

Answered
Reading file with variable name
for n = 1:16 filename = sprintf('PPT%d.TXT',n) end That loop creates the filenames you need, with the '%d' in the sprintf...

etwa 2 Monate ago | 1

Answered
Why the result of GMM(Gaussian mixture model) is not the same for twice calculation?
There is a random component to the fitting algorithm. The results will not be exactly the same each time, because the pseudorand...

etwa 2 Monate ago | 0

| accepted

Answered
Creating new dataset corresponding to certain name within a variable column
Here is one possible way. (It assumes your table's variable name is tbl.) outcome = tbl(ismember(tbl.bottle,'C-a'),:);

2 Monate ago | 0

Answered
Boxplot and Dimensions Arrays
If you define your original arrays as column vectors, instead of row vectors, your code will work. Try this instead: %msf for s...

2 Monate ago | 0

| accepted

Answered
Removing vertical line from the script window
From the Command Window: MATLAB --> Preferences --> Editor/Debugger --> Display Increase the right-hand text limit.

2 Monate ago | 0

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Answered
Center of two points (positive and nenegative values)
I believe your calculation is correct for negative values of v. The problem is that the point may not lie between the two input ...

2 Monate ago | 0

| accepted

Answered
how to test if multiple distributions are statistically different from each other?
What is reported in that table are the parameters of lognormal distributions. Because the parameters are different, those distri...

2 Monate ago | 0

Answered
Missing factor using rule of three?
Try (0.004*4*pi)/(2*pi) The reason your syntax does not work is that it will divide by 2, and then multiply by pi. See order ...

2 Monate ago | 1

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Answered
How can I average the first 14 columns, the second 14 columns, and so on and so forth?
Assuming you actually want to average over columns (see my question above), I believe out = movmean(M,[0 13],2); out = out(:,1...

3 Monate ago | 1

Answered
delete rows from matrix if some of its elements equal all elements in another rows another different dimension matrix?
Here is one way: Sw = [2 3 6 25 11 3 6 7 8 9 3 6 25 8 9 3 6 25 11 11 3 4 5 6 25 4 ...

3 Monate ago | 0

Answered
Can copula PDF value exceed 1?
Yes, a probability distribution function can have values greater than 1. Remember that the PDF is not the probability at that l...

3 Monate ago | 0

| accepted

Answered
What happen with confusion matrix ?
It looks like you have 55 observations. 51 of them were classified correctly (along the diagonal, indicated in green). But 4 of ...

3 Monate ago | 0

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Answered
Vectorized Search of substrings in Cell Array
Discovered a much cleaner way: contains(t,'bc');

3 Monate ago | 0

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