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Alden Scientific

Last seen: en dag ago Active since 2011

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Head of Modeling and Statistics at Alden Scientific. Obsessive runner. Professional Interests: Predictive modeling, statistics. (I don't respond to email via author page, but will usually look at a question if you send me a link to it.)

Programming Languages:
Python, R, MATLAB, SQL
Spoken Languages:
English
Pronouns:
He/him

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Answered
Accessing Fit Coefficients from Curve Fitting
data_fit is a cfit object. You can apply post-processsing steps to this object, as described in this documentation. It sounds l...

9 dagar ago | 0

| accepted

Answered
"Try the New Desktop" icon persists even after uninstalling the add-on (New Desktop for MATLAB (Beta))
That icon is not related to your use of the beta release from the FEX. The New Desktop is always an option now (presumably until...

10 dagar ago | 1

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Answered
"Arrays have incompatible sizes for this operation" error
It's difficult to know for sure, but I'm guessing those are the variables as they exist in the workspace, outside the function. ...

15 dagar ago | 0

Answered
I run the code below and expect to get a uniform histogram. It's not. I don't understand why not.
It's because of your choice of 100 bins is tuned to the periodicity of your function in a way that makes it the counts chaotic n...

20 dagar ago | 2

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Answered
Why I am not getting the same result for an integral of a piecewise function?
You have two mistakes in this code. First, you got the signs wrong on the check. It should be check1 = aux1 - (aux2 + aux3) Se...

20 dagar ago | 1

Answered
How to save entire MATLAB workspace as a JSON file?
There is no built-in way to do this in MATLAB, and it strikes me as quite difficult to do in a way that is general enough to man...

20 dagar ago | 1

Answered
Prevent Windows Update from shutting down Matlab session
When you say "stop my simulations from shutting down", do you mean "Have MATLAB pause the Windows update?" As a Mac user, I don...

21 dagar ago | 0

Answered
how aggregate duraration and sum it in timetable
Here is one way: load("matlab_tt2") TT2.timeOfDay = timeofday(TT2.datt); equalDurationSum = groupsummary(TT2,"timeOfDay",...

22 dagar ago | 0

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Answered
how to remove variables of a table with a zeros in it
% Example data x = ["a";"b";"c"]; y = [4;5;6]; z = [0;7;8]; tbl = table(x,y,z); % Find variables with a zero hasZero = a...

23 dagar ago | 0

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Answered
Plotting error bars on grouped bar
You need the XEndPonits property of the bars. % Sample data data = [1.5, 2.3, 3.2; 2.0, 2.8, 3.5; 1.8, 2.5, 3.0]; errors = [0...

25 dagar ago | 1

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Answered
fitPosterior warning: Why does fitPosterior output a warning when the transformation is a step function?
I would say that a warning could be warranted because perfect separability could be an indication of over-fitting, and that the ...

26 dagar ago | 0

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Answered
i need to plus all numbers in my Array of 3x3 then divide that number by its area using save ,for loop, function
You can sum all the elements of an array using the sum function. For example A = magic(3) S = sum(A,"all") You can save to fi...

26 dagar ago | 0

Answered
How can I make x and y axis dates with contour?
That limitation is a shame. One awkward solution is to convert the datetime values to datenums (which are purely numeric), and ...

28 dagar ago | 0

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Answered
using PCA to filter outliers in MATLAB
There is a built-in MATLAB function, rmoutliers, for detecting and removing outliers. I frankly did not read all your code, but...

28 dagar ago | 1

Answered
Detection of storms from precipitation data
I think this does what you want. It is easy to make minor indexing mistakes, so you should double-check: % Load data load("VE_...

ungefär en månad ago | 0

Answered
How to calculate Bootstrap confidence interval
As you may have noticed already, the data have a huge variance around that fit: x = [6 10 14 20 26 34 38]'; y = [122 107 119 1...

ungefär en månad ago | 0

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Answered
don't understand output of fitlme, intercept substituted for first line.
The output is not substituting 'Intercept' for a level of your coefficient. It looks like your variable voc_registers is catego...

ungefär en månad ago | 0

Answered
Does the curvefit toolbox return the equation for the best fit line (or curve)?
Yes, you can get the coefficients of the best-fit equation. @Torsten's comment illustrates where you can see them in the UI, and...

ungefär en månad ago | 0

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Answered
what is the best way to learn deep learning for medical imaging?
If you are talking specifically about using MATLAB, then I suggest you start with the Deep Learning Tutorials and Examples with ...

ungefär en månad ago | 0

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Answered
anyone can help me explain the meaning of the following code?
I ran your code here. It seems pretty obvious what it does, right? You might want to do the free online MATLAB Onramp tutorial,...

ungefär en månad ago | 0

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Answered
Set scale of boxplots
% Make some pretend data rng default x = 1.e-5*rand(1000,16); % Boxplot boxplot(x) % Fix the y-axis scale ylim([0 1.e-...

ungefär 2 månader ago | 0

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Answered
matrix, where each element is a column vector
ETATT=cell(11,7); % initial matrix Etat=zeros(1001,1); % column vector, contained in each element of the ETATT matrix % Fill...

ungefär 2 månader ago | 0

Answered
How to apply individual color to each bar on a bar chart plot
The documentation for the bar command has a section on how to control individual bar colors.

ungefär 2 månader ago | 1

Answered
Why does my fit to a PDF generated using a histogram not add up to 1 or give me correct expected value?
I can't run your code to completion, because fofaveless is not defined, so I can't calculate the variable continuous. But, it l...

ungefär 2 månader ago | 0

Answered
How to spline 163 data points into 100 data points?
I expect you want to use the spline method in the interp1 function. It may be possible to give more specific help if you upload ...

ungefär 2 månader ago | 0

Answered
1-Way Repeated ANOVA
I don't have any experience with this type of modeling, but it looks like you should be able to use fitrm followed by ranova on ...

ungefär 2 månader ago | 0

Answered
How to cycle through elements in an array in Matlab
You can utilize the same idea. Just offset by one inside outside mod(): A = [2 3 5 7]; % Illustrate the mod() cycle with off...

2 månader ago | 2

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Answered
Why does this code give error?
It's because randi(1,Nb) generates an Nb*Nb array. You need randi(1,Nb,1) as below clear;clc; fc = 3e8; Nb = 1000; %% ...

2 månader ago | 0

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Answered
plot legend shows wrong linespec
The syntax you are using created a plot with 402 "lines". The first 401 are red, and the last one is blue. load('data') % I di...

2 månader ago | 1

Answered
want to use output matrix obtained for every iteration of a for loop in another for loop.
Here are two possibilities: % Save into cell arrays nsmall = 4; mcell = cell(nsmall,1); for k = 1:nsmall mcell{k} = ran...

2 månader ago | 0

| accepted

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