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the cyclist


3.661 total contributions since 2011

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

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Answered
Finding maximum value and corresponding variable
P = rand(10,40,10); % Some pretend data [P_max,linear_index_max] = max(P(:)); % Find max and index, for linearized matrix [mc,...

ongeveer 19 uur ago | 0

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Answered
How can I display a bar chart ?
Use the bar function.

6 dagen ago | 1

Answered
Plot and interp using Spline method
It's presumably because you have not chosen your query points to be very close together. Do you get something closer to what you...

7 dagen ago | 0

Answered
how can i get activation key
If you are looking to purchase MATLAB products, you could start at the MATLAB store.

8 dagen ago | 0

Answered
How can I add an expiration date and time to my script or P-code file?
One way that you could do it would be to put a line in your *.m file code that checks the date [using, for example, the now() fu...

10 dagen ago | 0

Answered
list names in an array
I'm pretty sure there is a better, simpler way to do this, but I believe this does what you want: s = dir; fileList = cellfun(...

11 dagen ago | 1

Answered
I need some help with arrayfun
I believe that groupsummary is for data stored in tables only. You can do what you want with [sortedResponses,~,idx] = unique(...

12 dagen ago | 0

Answered
How to do feature selection by maximizing Rsquared for linear regression model ?
I believe you just need to redefine the critfun function from the one in the example: function dev = critfun(X,Y) model = fitg...

14 dagen ago | 0

Answered
How do I optionally disable code for a missing toolbox?
All credit to Walter, but I believe you'll want to do this test: license('test','Distrib_Computing_Toolbox')

14 dagen ago | 0

Answered
Why the script of function is always stored in two files ".m" and ".m~"?
It is an auto-saved backup file. See this page for details.

22 dagen ago | 2

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Answered
How to plot???
I suggest you take a look at the MATLAB Plot Gallery to find something similar, and use that as a starting point. It looks like ...

24 dagen ago | 0

Answered
how to calculate integral pdf ?
The probability is the integral of the PDF over a range. You can approximate that integral as a sum: pdf = @(x) 2*x; x1 = 0;...

25 dagen ago | 0

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Answered
Error: Cannot set support to 'positive' with non-positive data.
You've checked that your data are non-negative, not they're positive. I'm guessing that you have zeros, and the positive-support...

25 dagen ago | 1

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Answered
Do I need to reference matlab in an academic paper?
The most common thing I have seen is to state the software and version used (e.g. MATLAB ver. R2018b), within the Methods sectio...

28 dagen ago | 0

Answered
Excluding date from date and time
You should be able to use the timeofday function. The resulting output will be a duration array.

29 dagen ago | 0

Answered
Error in Mosaicing (line 44) new_img(i,k) = N(i,k-Index+1);%%to stich the 2nd image after index. Index exceeds matrix dimensions. what does this mean?
It means that when MATLAB tries to do the operation new_img(i,k) = N(i,k-Index+1); that either new_img is a smaller array tha...

29 dagen ago | 0

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...

ongeveer een maand ago | 2

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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...

ongeveer een maand 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++,...

ongeveer een maand 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=...

ongeveer een maand 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. ...

ongeveer een maand ago | 1

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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...

ongeveer 2 maanden ago | 2

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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...

ongeveer 2 maanden ago | 0

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

ongeveer 2 maanden ago | 0

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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...

ongeveer 2 maanden ago | 0

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

2 maanden ago | 0

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

2 maanden 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 ...

2 maanden 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...

2 maanden 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);

2 maanden ago | 1

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