Answered
Combinations and Matrices?
There just happens to be a very obfuscated way to do this: M = dec2bin(0:2^20-1) - '0'; size(M)

3 years ago | 0

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How does the classification learner app implement k-fold cross validation?
I am most definitely not an expert in this app, but I built a simple model using the default settings, and then exported the fun...

3 years ago | 0

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fit tool with errors in x and y
I am late to seeing this question, but FYI there is a submission to the File Exchange that does linear, univariate Deming regres...

3 years ago | 0

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Issues plotting simple bar graph.
The error message is quite clear. Your X values are not unique. Let's look at a simpler example: x = [1 2 2]; y = [3 5 7]; ...

3 years ago | 0

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Strategy on how to save data from multiple runs of an experiment where variables changes
There's probably no single best answer here. But if the overall scale of the data is not too large, storing everything in one ta...

3 years ago | 0

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Pie chart with arrows without text coincidence on each other
This is a case where you need to ask yourself, "What is the information I really need to convey to my audience, and what is the ...

3 years ago | 1

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How to transpose every cell in a table?
% If data are in a cell array c = {rand(1,7),rand(1,27)} ctrans = cellfun(@transpose,c,'UniformOutput',false) % If data...

3 years ago | 1

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Answered
what is the meaning of this error? how to stop this error?
One reason for getting that error is having text in a line before the function definition. So if your function file looks like t...

3 years ago | 0

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How to give variable name to a Mat file?
Your code is looking for a variable named X1. The file X1.mat that you load does not contain a variable named X1, it is just nam...

3 years ago | 0

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Append multiple values in one variable
Assuming the image are all the same size, 512x512, then I would "stack" them in the 3rd dimension, then convert everything to a ...

3 years ago | 0

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Use cvpartition to generate a set of random 3 numbers 100 or 1000 times
I don't think cvpartition does what you intend, and I am quite sure that you don't understand its output. Rather than explain cv...

3 years ago | 0

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Most efficient way of looking up values in an array.
One simple step that could speed up your code a lot would be to preallocate memory for your output array. Put myIntegers = zero...

3 years ago | 0

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matlab some polyfit problem
It is admittedly confusing, and I have fallen into this trap myself. The reason for the difference is described in the documenta...

3 years ago | 0

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How to calculate the correlation matrix of two jpg images of the same size?
The result is what I would expect. Imagine this smaller example, with two images of 9 random pixels: rng default N = 3; img...

3 years ago | 0

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Finding the predictors of a neural network
Suppose each of your 70 predictors is a binary variable. That means that there are 2^70 possible combinations of predictors. F...

3 years ago | 0

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Find column number for every row in matrix
Here is one way: M = [-1 4 1; 1 -1 -1; -5 4 -1]; [r,c] = find(M>0); [~,j] = unique(r); ...

3 years ago | 0

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How do I crop a matrix within desired numerical limits?
I am unclear what you mean by "crop" here. I can think of two possibilities: Remove rows of your matrix that have values outsid...

3 years ago | 0

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How do I fix "Index in position 2 exceeds array bounds. Index must not exceed 1." as error?
Notice that when you used import data, it came is as a structure. So, you would need to access data.data. data = importdata('C...

3 years ago | 1

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Convert a table in a pdf to a MATLAB cell structure
I can strongly recommend using Tabula to first extract the table from the PDF file. Then use a MATLAB function (e.g. readtable) ...

3 years ago | 0

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How do I fix "Index in position 2 exceeds array bounds. Index must not exceed 1." as error?
It would be easier for us to help you debug this if you upload the data. You can use the paper clip icon in the INSERT section o...

3 years ago | 1

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What algorithms can perform multiple output regression?
The mvregress function in the Statistics and Machine Learning Toolbox will perform linear regressions with multiple dependent va...

3 years ago | 0

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How to I validate a string to ensure it contains a valid Date .
Here is one way: MyStr = '23max2023'; % Invalid string will give an empty array isMyDateFormat = regexp(MyStr, '\d{2}(jan|feb|...

3 years ago | 0

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How can I get the P value of the two-tail Student's test when I know the T value and Degree of Freedom?
Sorry for the delayed response. I did not get a notification that you had replied. Your second method is the correct one (assum...

3 years ago | 0

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Replace option in fitrensemble
I'm confused. It sounds like you saying that you don't want a given predictor to occur at different branching points. For examp...

3 years ago | 0

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how squeeze function works for irregularSineWaves dataset????
The squeeze function removes dimensions of an array that have size 1.

3 years ago | 0

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sqlwrite does not preserve row order
Even if you store the data in a particular order (which you should not try to do), there is no guarantee that any given SELECT s...

3 years ago | 0

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How to draw estimated kernel densities of two series in one figure?
Here are two different methods N = 50; x1 = randn(N,1); x2 = randn(N,1) + 1; [f1,xi1] = ksdensity(x1); [f2,xi2] = ksdensi...

3 years ago | 0

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How to use Webwrite to call REST APIs successfully, eg OpenAI API
I did not carefully look at your code, but there was recently discussion at this question, which reached a successful conclusion...

3 years ago | 0

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How can I enhance scatter3() visibility with a heatmap?
I think it is possible that histogram2 or swarmchart3 might be useful to you. I also recommend taking a look at the MATLAB Plot...

3 years ago | 0

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fitclinear appears to use sgd solver even when sparsa is specified
This is interesting. I'd be surprised that MATLAB makes that transition when you have explicitly specified the Solver .. but I a...

3 years ago | 0