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the cyclist


Last seen: Today
4,259 total contributions since 2011

Data scientist at Cohen Veterans Bioscience; 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.)

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Answered
Repeated Measures ANOVA Matlab
If you have the Statistics and Machine Learning Toolbox, you can use the anovan function. In particular it looks like this examp...

7 hours ago | 0

Answered
How do I calculate percentage or frequency and display it on a bar plot?
Because you have the typo rate=(frequency/total):100; instead of rate=(frequency/total)*100;

22 hours ago | 0

Answered
Symbols instead of line with plot
It looks like it might be because k_ is only a single value, the last one of the loop. Maybe you wanted k_(i) = k; in the lo...

22 hours ago | 0

Answered
Help Using readmatrix or readcell
According to the documentation, there is no two-output syntax for the readmatrix command. You'll need to get a deeper understand...

1 day ago | 0

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Answered
How to process multiple Excel files using the same Matlab code for each
If you can make a cell array of the filenames, eg. filenames = {'this file.csv','that file.csv','oh this file too.csv'} then y...

1 day ago | 0

Answered
Index exceed number of array elements(1)
In your function, the input is a character array, but you convert it to a string. The expression Testdate(7:10) would have pul...

1 day ago | 0

Answered
How can I set the y tick interval (to powers of 10) on a log scale?
Like this? N = 500; x = sort(1e3*rand(N,1)); y = sort(1e6*rand(N,1)); figure loglog(x,y) set(gca,'XLim',[1e1 1e4],'XTick...

4 days ago | 0

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Answered
Is it possible to set the size of the gap between grouped bars in a bar graph?
Another option would be to abandon using grouped bars in a single call to bar(), and instead plot the two sets of bars with two ...

4 days ago | 0

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Answered
Is it possible to set the size of the gap between grouped bars in a bar graph?
This question and the answer from MATLAB staff suggest that it is not possible using the built-in bar function. However, there ...

4 days ago | 0

Answered
How to plot a line over a specific interval?
Can you upload the data? Specifically, it is unclear to me what sort of data type g is. Instead of plotting x, you'll want to d...

4 days ago | 0

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Answered
create a variable and specify its column
The specifics will depend on what format the variable day is. Here, I assume it is a datetime. % Create the table day = dateti...

5 days ago | 1

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Answered
sort boxplot based on 25-75th percentiles
Yes, it is possible. The algorithm would be something like Find the percentiles on the data, using the prctile command, before ...

6 days ago | 0

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Answered
Index in position 1 exceeds array bounds (must not exceed 26)
You haven't provided enough info to run your code, which would make debugging much easier. You also didn't tell us which line gi...

7 days ago | 0

Answered
trying to use logical matrix to get remove some elements from matrix instead of getting a same matrix im getting a column matrix
Assuming you want zeros in the other locations: a=[1,2,3;12,21,2;2,1,2] b=(a>1) c = zeros(size(a)); c(b)=a(b) c = ...

8 days ago | 1

Answered
How to check what part of an array isn't scalar?
Just to clarify, are you saying that you have a categorical array, you are trying to apply the unique command to that array, and...

8 days ago | 0

Answered
My output did not display in command windows when using script
The syntax you used, fprintf(fid,...) is explicitly for writing to files. Use fprintf(...) % without "fid" argument to write...

8 days ago | 1

Answered
(Array indices must be positive integers or logical values.) any help plz
The specific reason you get that error is that sx is complex number. sx is complex because s is complex. s is complex because ...

8 days ago | 1

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Answered
How to change the plot title and file name when saving it to a for loop
Part of the problem is that you are mixing character arrays and strings. The following works (after you set your own outputdir):...

8 days ago | 1

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Answered
For loop to calculate distance between a 5d dimensional data point and another matrix
The distance from the i-th point of T to the j-th centroid is sqrt(sum((T(:,i) - centroids(:,j)).^2)); % Check my formula here,...

10 days ago | 0

Answered
I have a variable with a string that I would like to use as a filename, how do I input that string into a function rather than the variable name?
I think I see the problem. Did you notice that the output of the inputdlg command is a cell array? You need the contents of that...

11 days ago | 0

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Answered
array and logicals; deleting columns
Here is one way. arr = [1 2 3; 4 5 6; 7 8 9]; logic = [false true false]; new = arr(:,not(logic))

12 days ago | 0

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Answered
Indexing problem. I want to insert a vector into another vector with a loop.
Here is one way. A = [5 4 3]; B = [1 -1 -1 1 0 0 0 0 0 0 0 0 0 0]; for nb = 0:numel(B)-4 output = [A circshift(B,nb)...

12 days ago | 0

Answered
how to specify y axis?
Try this: clear clc clf x=1:1:24 yyaxis right y =[0,0,0,0,0,2.879097736,22.91004173,45.42868867,58.31916249,64,65,66,65,6...

12 days ago | 0

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Answered
how to specify y axis?
set(gca,'YTick',[0 500 1000],'YTickLabel',[0 500 1000])

12 days ago | 1

Answered
Error Using fprintf Invalid file identifier. Use fopen to generate a valid file identifier.
Is this good enough? I = rand(2); if ~isnan(I) I if abs(I)>2 fprintf("Violated Bell Inequality"); end else f...

12 days ago | 0

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Answered
Using a Variable between different functions
You can pass them out of the first function: function [coin, I, evAlice, evBob] = CHSH_(sigma_x,sigma_z) and into the second o...

12 days ago | 0

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Answered
I have a variable with a string that I would like to use as a filename, how do I input that string into a function rather than the variable name?
I don't have dxf_open, but the following -- which is effectively the same as what you posted -- works for me: answer = 'test'; ...

12 days ago | 0

Answered
joining one column from a table to another while matching all other columns
(Your code won't produce the tables a and b.) I believe the outerjoin command does what you want: a = table({'k','l','m','b','...

12 days ago | 0

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Answered
Difference between rng('shuffle') and NO rng for estimating with MLE
If you start a fresh instance of MATLAB, and generate a sequence of pseudorandom numbers, it will always be the same sequence. (...

13 days ago | 1

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Answered
TAKING [X1 X2 …] and [Y1 Y2 …] and reshaping them into [Y1 X1 Y2 X2 …]
xy = reshape([y;x],1,[]);

14 days ago | 0

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