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How to combine multiple sheet in an excel file in to a single sheey
Follow this example: file = "test.xlsx"; % replace your file name names = sheetnames(file); data = table; for i = 1:numel(...

3 years 前 | 0

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Any efficient way to identify a set of 1s in a big array?
Try this a = [1 1 1 -1 0 0 0 0 1 1 -1 0 0 1 1 1 1 -1 0 0]; astart = [1, 9, 14]; astop = [3, 10, 17]; dda = diff([0, 0, dif...

3 years 前 | 0

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I have 45x484 matrix but when I calculate coeff pca function, I am getting coeff with 484x44 matrix which causes errors in biplot. Why is the rows and columns switch places?
Well you should find the answer in your problem not MATLAB pca function. You have 45 observations with 484 variables, so degree ...

3 years 前 | 1

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Extracting specific data from multiple excel files and create a single matrix from those
You can use readmatrix (assuming all values are numeric, otherwise use readtable) or fileDatastore to read those files. Somethin...

3 years 前 | 1

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Printing a MATLAB table on the console which contains both characters and ints
One simple way is to convert them to categorical, but if you're doing something with that variable, extra care should be taken. ...

3 years 前 | 0

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Intersect table with Id scattered
If both tables don't share same key ids, you can simply join them as: tOne = table(["x1", "x2", "x3"].', (1:3).', 'VariableName...

3 years 前 | 0

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Access data from table and assign to variables
This might work tab = table({'Car'; 'Bike'; 'Cycle'}, [50; 20; 5], [2; 1; 0],... 'VariableNames', {'Vehicle', 'speed', 'fu...

3 years 前 | 0

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Is it possible to use non-image data as inputs for the Deep Network Designer App?
Technically yes you can, I assume something like this would work: dlData = reshape(data', [1, 1, size(data, 2), size(data, 1)])...

3 years 前 | 0

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Find places before or after zeros in vector
a = [0 0 0 1 1 1 0 0 1 1 1 0 1 1 1 0 1 1 0]; before = [0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0]; after = [0 0 0 0 0 1...

3 years 前 | 1

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How many computers can I associate with my educational license?
From Pricing and Licensing under educational license: The products can be activated on up to four different computers, provide...

3 years 前 | 0

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How to save local variables (which are within a called function)
I don't know what's the use of doing this. But given what you need, you can do something like this: function dydt = vdp1(t,y) ...

3 years 前 | 0

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how to extract "F-statistic vs. constant model" value for fitnlm programmatically
I don't know if MATLAB has another helper function to fetch F-test stat., but you can extract it with information available in f...

3 years 前 | 0

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Replacing certain values in table with NaN based on different conditions
For table, you need to directly access the variable names/column indices. so, T(extremevalues) = NaN; won't work. This may hel...

3 years 前 | 0

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Why do I get correlation result NaN?
Unless you have a good reason to impute your missing data, you can remove missing values from both vectors. nanidx = isnan(A) |...

3 years 前 | 2

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cdfplot and ecdf differences
They're the same (see cdfplot doc), the empirical CDF values are supposed to be used in stairs and not plot (smoothed) rng('def...

3 years 前 | 1

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Why do I get NaN?
First, Height is already double, so A = 2; str2double(A) Secondly, first element of Height is NaN. Remove it prior to the ana...

3 years 前 | 0

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why does fitlme with a random effect gives the same results to fitlme without the random effect
This shows the model fits well with only fixed effect and there is no variance left for random effects. Also, your observations ...

3 years 前 | 0

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how to prompt user to try again instead of letting MATLAB display "Index in position 1 exceeds array bounds" error message.
a= [1 2 3; 4 5 6; 7 8 9]; askAgain = true; while askAgain position = input ('input a number: '); if posit...

3 years 前 | 0

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Errorbar on Box and Whisker Plot
If you want error bars on the same box plots, you can use something like this: tab = table(randi([1, 50], 20, 1), repmat([1; 2]...

3 years 前 | 0

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How to extract the data from webread output?
It's always better to first check the RESTful API documentations. In your case, you can get those values either by applying rege...

3 years 前 | 1

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why Normal Distribution with Histogram not matching?
This is because histogram shows frequency of your sample, while PDF plots the density. Of course you can change the way histogra...

3 years 前 | 0

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how many times is a value repeated in a table
You can play with groupSummary which offers lots of options: tab = table(repmat([20; 50; 100], 20, 1), string((1:60).'), 'Varia...

3 years 前 | 0

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How to plot box plots of data of different sizes on the same figure?
You just need to define a grouping array: x1 = randn(128, 1); x2 = randn(100, 1); X = [x1; x2]; grp = [ones(size(x1)); 2.*o...

3 years 前 | 0

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want to order and group files
You can try regexp or pattern: dcm = "00022.dcm"; bmp = ["2015220700022_Frame20.bmp", "2015220700023_Frame20.bmp", "2015220700...

3 years 前 | 0

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Regression with tall array (Using datastore, CSV) - Error
Well, your data is tall table, and that's what MATLAB complains about: since your first argument is a table, MATLAB thinks y is ...

3 years 前 | 0

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Is there a way to get a confidence/probability score on fitrsvm or other regression techniques like fitrensemble using the 'predict' function?
You already answered yourself! % MATLAB doc for fitrsvm load carsmall X = [Horsepower,Weight]; Y = MPG; Mdl = fitrsvm(X,Y)...

3 years 前 | 0

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How to adjust size of the legend in large figures?
Try NumColumns property: plot(randn(400, 40), randn(400, 40), '.-') legObj = legend(gca, 'NumColumns', 2);

3 years 前 | 0

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Subsets of uncorrelated features
Let R be the pairwise correlation matrix: N = 10; R = rand(N); R(logical(eye(N))) = 1; for i = 1:size(R, 1) - 1 for...

3 years 前 | 1

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How can I assign different colors to different bins of a single "bar/barh object"?
Well, you just needed to go through the doc for bar. y = [75 91 105 123.5 131 150 179 203 226 249 281.5]; h = bar(y, 'FaceColo...

3 years 前 | 2

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how to draw classification response of machine learning model ? (Ex. Logistic Regression Response)
You can plot predicted probabilities from a logisitc regression model: y = randi([0, 1], 1000, 1); x = randn(1000, 1); mdl ...

3 years 前 | 0