# 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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**Content Feed**

Merging multiple graphs in the same tiled layout

If I understand what you mean, you just need to use the hold function (just after nexttile) to retain plots, rather than replaci...

2 days ago | 0

.csv using readtable doesn't make difference between the value 1 and 01

% Detect the automatic import options opts = detectImportOptions("23_Time Cards_Practice 1.CSV"); % Change of import type of...

2 days ago | 1

Plot legend has too many entries

This line yieldline_steel = plot(x1,y1,x,y_steel) plots two objects, the first of which is just a single point.

3 days ago | 0

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How can I modify a list of existing variables programmatically?

You've seen @Walter Roberson's answer, and it is spot-on. That being said, what you want to do is possible, using the appropriat...

3 days ago | 1

Get exact curve parameters in the fit function

The four decimal places are just the default display value. You can change that with the format command. For example, use format...

4 days ago | 1

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If statement not working for trig quad check

I did not look in detail, but I'd be willing to bet that the problem lies in making comparisons between floating-point numbers, ...

5 days ago | 0

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Mathematical functions across variables

If you just want to know their sum A(1,1) + B(2,1) If you want to add A(1,1) to the value stored in B(2,1) B(2,1) = A(1,1) + ...

5 days ago | 0

Plot ECDF and histogramm of distribution

Do you mean you want to avoid drawing the additional horizontal red lines? I think you'll need to do something "manually", beca...

7 days ago | 0

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Are "fitrnet" and "fitnet" using backpropagation?

I am not an expert, but my read of the documentation is that all the algorithms used by fitnet, at least, will use backpropagati...

8 days ago | 1

How to update leap seconds

The file leapseconds.m calls a built-in file to get the list of leap seconds, but you can edit that file to add additional ones....

8 days ago | 0

Random number generate in an interval

A normal distribution, by definition, has support from negative infinity to positive infinity. You cannot have both a normal dis...

10 days ago | 0

I can not solve the errors

The direct cause of the error you are seeing is that in the line that gives the error, you are trying to matrix-multiply a 1x3 v...

12 days ago | 0

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Error Code: Unable to perform assignment because the left and right sides have a different number of elements

My best guess is that while your t and v have the same number of elements (which would allow plotting them against each other), ...

12 days ago | 0

Sorting columns by header names

% Make up a data table N = 3; Column_B_data1 = rand(N,1); Column_A_data1 = rand(N,1); Column_C_data2 = rand(N,1); Column_D_...

17 days ago | 1

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Horzcat Error in 3x3 matrix with multiplication of Matrices

There is nothing inherently wrong with the matrix you specified (as you can see from the code below). You'll need to share more...

23 days ago | 0

Need help in using trapz to integrate a definite function

trapz is probably not the best way to do this. You could use integral instead c=3*10^8; % speed of light in vaccum h=6.626*10....

24 days ago | 1

Need help in using trapz to integrate a definite function

Did you read the documentation for the trapz function? It expects either two or three inputs, not the four you provided. I am g...

24 days ago | 0

Break title into multiple lines?

You can create a multiline tile using either a cell array or a string array. Each element in the array corresponds to a separate...

26 days ago | 105

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Dark Mode editor for MATLAB

UPDATE April 2022 - Please see this Answer for more details on dark mode: https://www.mathworks.com/matlabcentral/answers/167119...

27 days ago | 18

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Fitting 3-d plot

Use meshgrid to make a grid out of your x and y vectors: x = 1:8; y = 1:11; z = rand(11,8); [xx,yy] = meshgrid(x,y); su...

28 days ago | 0

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Slider (legacy) with no room to slide?

I believe this does what you want, for N=1. I frankly have not fully grokked how this works, but figured I'd post the solution ...

29 days ago | 0

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Numbers prediction using advanced matlab code

The fact that you do not reproduce the same output every time is probably because the algorithm you are using has some random co...

29 days ago | 0

Is there a way to use a for loop to loop through structure fields?

Yes, you can. (Here, I just check the size, instead of calling a function.) mystruct.field1 = rand(2,3,5,7); mystruct.field2 =...

1 month ago | 1

How to obtain an array of the indices from the original array when using nchoosek

I have to admit I am not absolutely certain about what you want as input and output. Here is my best guess: A = [7, 8, 9]; C =...

1 month ago | 1

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How do I fit two function in a same data at a time depending on the range ?

Here is a solution in which I fit the non-linear function (of the form you prescribe) to the data. (For fun, I added some stati...

1 month ago | 0

How do I fit two function in a same data at a time depending on the range ?

If the data are truly smooth, as what you posted (and does not have statistical fluctuation), then you just need to find the fir...

1 month ago | 0

transform bar chart with separate bars (for each value of y) to bar chart with overlapping bars

load matrix M = matrix(:,2:end); [sortedM,sortingIndex] = sort(M,2); cm = [[1,0,0]; [0,0,1]; [0,1,0]; [1,0,0.52]]; fi...

1 month ago | 0

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How to incorporate likelihood component in posterior estimation?

I am not experienced using these models, but based on the workflow described in this documentation, I think you just need to use...

1 month ago | 0

In the operation of filtfilt, does the filtering process occur in the row direction or the column direction?

Per the documentation page filtfilt ... "The function operates along the first array dimension of x unless x is a row vector. I...

1 month ago | 0

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3D plot origin shifting

By default, the axes will go from smaller to larger number, starting from the point "nearest" you, moving "away". It seems like ...

1 month ago | 0