the cyclist
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4,341 total contributions since 2011Data 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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My is my matrix can't multiply with this vector
Your variables tranposeA and y have sizes 2x4 and 1x4, respectively. It is unclear to me whether you wanted a matrix multiplica...
1 day ago | 0
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How to assemble 3D array from four vectors
Here is one way: G = reshape([FF; MF; FM; MM],2,2,6)
2 days ago | 0
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how to graph using loop?
Put the command hold on on the line after figure. See the documentation for the hold command for details.
2 days ago | 0
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How to arrange indices of a real array ?
Rankig = [ 0.6229 , 0.6516 , 0.2036 , 0.0997 , 0.5986 , 0.5897 , 0.7667 , 0.4887]; [~,Indexes] = sort(Rankig); [~,Indexes2...
3 days ago | 0
How to arrange indices of a real array ?
You are just interpreting the output incorrectly. [B, Indexes] ans = 0.7667 0.6516 0.6229 0.5986 0.5897 ...
3 days ago | 0
Finding unique slices of a multidimensional array
% Define a 3-d array of pretend data, that has a couple duplicate slices % (Use your data instead) rng default A = rand(2,2,4...
4 days ago | 1
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Cell returns different number of rows in a loop - How to align this?
Something like this should help: % Define the old and new phases info phases_old = {'eta';'mu'}; phases_new = {'eta';'mu';'mu...
5 days ago | 0
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How to calculate the slope of select data points across entire dataset?
Here is a straightforward method. I commented the code, so I hope you can follow the algorithm I didn't see how you wanted to c...
14 days ago | 0
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Why do i get tstat Inf after a linear regression?
The root cause is that your model is "perfect". The model is effectively y = b1 + b2*x1 + b3*x2 + b4*x1*x2 which means you hav...
17 days ago | 0
Hold on function doesn't work
The problem with your code is not with the hold command. The problem is the syntax to plot the line. You plotted a 1x200 vector ...
25 days ago | 0
Very confused about MLE
Let's step back to the big conceptual picture. The mle function is estimating the most likely parameters for a distribution of s...
1 month ago | 2
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how to plot only one datapoint at a time with a 1 second delay from a dataset
Here is one way: TestPoints=[1 4 6;2 1 4;3 2 3;4 1 5;5 3 4;6 1 6;7 2 6;8 2 6]; figure for nr = 1:size(TestPoints,1) pl...
1 month ago | 0
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how to make intervals in a bar graph
Here is one way: w = 42.5 : 5.0 : 62.5; n = [4 12 13 6 5]; bar(w,n,'BarWidth',1) FYI, if you have the underlying ind...
1 month ago | 0
How to get a random vector whose elements arrangement is the same as that of my desired vector
Do you want something like this, which adds some random "noise" around the elements of u? u = [3 1 5 105 155 50]; m = 10; n...
2 months ago | 0
Error using plot Not enough input arguments.
If you take a look at the documentation for the plot function, you will see that it cannot take cell arrays as input. I'm not e...
2 months ago | 0
shuffle indexes when sorting matrix
One way that springs to mind is to add a small, random "jitter" to the values in the image. The jitter magnitude should be small...
2 months ago | 1
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How to suppress this error?
Two thoughts: First: Are you certain you have the correct warning? After you run your code that gives the warning, what is the ...
2 months ago | 0
Dot indexing is not supported for variables of this type???
Complete guess here. Are you simply trying to multiply the two variables? If so, then E(i).*tx(rr-1) Just using a dot, by itse...
2 months ago | 0
How to interpret entries in documentation's left pane
In that left-hand pane, the following pages are at the same "level of the documentation hierarchy": Get Started with MATLAB Com...
2 months ago | 1
Probability of Combinations Occurring
By "unique combinations", I assume you mean unique rows. Here is one way: % Example dataset. (Use your data instead.) x = [7 ...
2 months ago | 0
multiplying scalar by matrix
In the exponentials, you missed an important set of parentheses, ensuring that you divide by the whole expression (lambda .* k ...
2 months ago | 0
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How can i create a for loop that modifies a column in an existing matrix?
I would use the histcounts command to do this task: A = [1,1,3,4,5,1]; dicevalue = [1,2,3,4,5,6]'; throwCounts = histcounts...
2 months ago | 0
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Question about writing a function.
In the future, you might want to separate two such different questions as two different posts here. For your first question, wh...
2 months ago | 0
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How to same size of plot and histogram
I think that using h1= histogram(data2p,'Normalization','pdf'); h2= histogram(data3p,'Normalization','pdf'); and of course r...
2 months ago | 1
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draw a boxplot from a probability density function
Here is a very kludgy way to do it. You can generate a small "sample" dataset that has the same summary statistics as your PDF, ...
2 months ago | 0
Delete overlaping intervals in matrix
I expect there is a more elegant approach, but here is a straightforward way: M = [100 200 5; 150 210 7; 205 300 9;...
2 months ago | 0
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Delete overlaping intervals in matrix
I believe this does what you want: M = [100 200; 150 210; 190 300; 300 400; 410 600; 500 700]; keepRow = M(2:end,1) >= M(1:end...
2 months ago | 1
I want to use the Python libraries in MATLAB
Have you seen this documentation on calling python modules from MATLAB?
2 months ago | 0
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