# the cyclist

### Alden Scientific

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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**Feeds**

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

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"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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"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

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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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

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

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

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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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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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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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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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

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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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

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

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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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

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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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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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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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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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

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

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

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

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

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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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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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

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