# the cyclist

Obsessive runner. Flâneur. 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.)

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**Content Feed**

Issue using Mann-Kendall Test

You have NaT values in your timetable. When I removed them with FM1(isnat(FM1.Var2),:) = []; the code ran to completion.

en dag ago | 0

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Is there a way to overlay one mask onto another?

I don't really do image processing, but I think this straightforwardly answers your question, using only base MATLAB commands. T...

en dag ago | 0

Plotting different figures by means of for loop

I believe this does what you are trying to do: % Create some fake data [Use your real data instead] m = 5; C = cell(3,4); C ...

3 dagar ago | 0

matlab not plotting graph

You are using a matrix division operation rather than an elementwise division. So you need, h = [2,4,6,8,10]; x = 10.1; y = 2...

3 dagar ago | 0

Numerical function invalid expression

You need the explicit multiplication sign 2*x: h=@(x)exp(2*x).*tan(x)./x.^3 You might also want to put in some parentheses ins...

4 dagar ago | 1

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Find indices in 2D Matrix

Is this what you mean? (I made the matrices smaller, just to show the result.) A = rand(5,2)>.3; B = rand(5,2); newmatrix =...

7 dagar ago | 0

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Efficient way to multiply a vector of size (Nx,1) with a matrix of size (Nx+1,Nx+1)

If you permute gamma to be a vector along the dimension 3, then you can multiply it by identy, and the result will be a 33x33x32...

8 dagar ago | 1

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Meaning of box plot notches

The value 1.57 is not something that "MATLAB chose", but rather is directly out of the original research paper that introduced t...

11 dagar ago | 0

Regression/ Ordinary Least squares on a custom equation

It's definitely an interesting modeling problem. Here is a plot of your data, where I used errorbar to plot the mean and error o...

11 dagar ago | 0

Element wise cell division

Your code is producing the correct result. You could also have used the cellfun() function to do this operation in one line: A ...

12 dagar ago | 2

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how do I find at which sample on the x-axis I have maximum value of y-axis?

If you use the two-output syntax for the max() function, the second output is the index of the maximum: clear all clc set(0,'...

14 dagar ago | 0

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How to plot successive rows of a table when value is true

This line of code for ii=1:ra-1 is looping over all rows except for the last one, so it never "sees" the last row. Therefore, ...

15 dagar ago | 0

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How to create bar graph with portions (multi-dimensional)?

This example from the documentation shows exactly how to do it. y = [2 2 3; 2 5 6; 2 8 9; 2 11 12]; ba...

16 dagar ago | 0

How to obtain confidence level and coefficient of determination?

tsreg is not a MathWorks function. Are you using this code from the File Exchange? Obviously, the author of that code has not p...

29 dagar ago | 0

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Inverse of a cell array

Do you mean you want the reciprocal of each element of each matrix? (That is not what the inverse of a matrix means.) If so, th...

ungefär en månad ago | 1

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How to rearrenge function with inputs given?

Option 1 You could do something that is GUI-driven, where the user enters values into textboxes that you have labeled as accel...

ungefär en månad ago | 0

could anyone help me how to generate some of the similar values using rng

Here is a new answer, based on the comments on the other answers. numberTotal = 8; % You can change this to 1000 numberRepeat...

ungefär en månad ago | 0

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could anyone help me how to generate some of the similar values using rng

In response to the comment in my other answer, here is a pretty simple way to do it: numberRep = 3; % You can change this to 80...

ungefär en månad ago | 0

could anyone help me how to generate some of the similar values using rng

Is this what you mean? rng default % for reproducibility, if desired [repmat(rand(),1,3) rand(1,2)]

ungefär en månad ago | 0

New variables after computing Principal Components Analysis

Yes, the output score is the observed values of the variables in the principal coordinate axes. I wrote a detailed answer to th...

ungefär en månad ago | 0

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How do I integrate the triple integral square root of 4-x^2-y^2-z^2 from 0,1,0,1,0,1?

f = @(x,y,z) sqrt(4 - x.^2 - y.^2 - z.^2); q = integral3(f,0,1,0,1,0,1)

ungefär en månad ago | 0

Gaussian Curve Plotting Issues

Can you be more specific what you mean by "the current gaussian curve is very wrong"? Do you mean with the lines connecting all ...

ungefär en månad ago | 0

I need to calculate invers of a non square large symbolic matrix

Non-square matrices do not have inverses. You can calculate the pseudoinverse using pinv.

ungefär en månad ago | 0

Implementation of connected components analysis using matlab

Did you think to google "matlab connected components"? Literally the first hit is this MATLAB function. I hope that helps.

ungefär en månad ago | 0

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Problem by using str2double with csv file

The issue is that your input file uses commas as the decimal separator, rather than a period ("decimal point"). This means that ...

ungefär en månad ago | 0

Having issues producing bar chart

I assume you got error from this line: xlabel(Animal ID''s') You have mismatched single quotes, i.e. "unbalanced delimiters", ...

ungefär 2 månader ago | 0

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How to sort a cell array based on the first row?

Out of curiosity, is there some reason you are using a cell array rather than a numeric array to store these numeric data? % Or...

ungefär 2 månader ago | 0

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How can a 4 element array index pull stored string values?

Can you upload examples of your variables fourElementVector and HexData, in a MAT file? This would be helpful. But it seems fro...

ungefär 2 månader ago | 1

How to select all rows of a given column in a cell array

Your syntax: T{1}{:,4} would work if the contents of T{1} were also a cell array, since you would use the curly brackets to ac...

ungefär 2 månader ago | 1

| accepted

Defining a fitline only up to a specific x-tick

It should be straightforward, but it is not possible to deduce from your code how to do it. In particular, since none of your va...

ungefär 2 månader ago | 1

| accepted