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how to select multiple rows from a large matrix and leave 1 row every time
A = rand(20, 100); keepRowsIdx = setdiff(1:size(A, 1), 4:4:size(A, 1)); Columns 1 through 10 1 2 3 5 ...

4 years 前 | 0

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You must pass X as a floating-point matrix.
Your TestSet must have the same structure as your Training set. You can try this result = predict(SVMmodel, Labels(:, 1:9));

4 years 前 | 0

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How to create a new parameter in one table based on multiple observations in a second table?
Let's call you first able tabc and the latter tabd. What you bascially need is to first select patients with true events, and th...

4 years 前 | 1

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Replace some values of a vector with values from another vector of the same size
You've missed the fact that k is of logical class: A = [0 0 -3 -8 -10 0 0] B = [-12 -12 -4 -4 -4 -12 -12] k = (A < B) C = A ...

4 years 前 | 0

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Problems with creating a dynamic struct with num2str
First of all you cannot choose a digit as filed name due to the same reason you cannot choose it as a variable name. for i = 1:...

4 years 前 | 1

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Change significance value in ttest2
I found a question asked here saying that trying ranksum should give the same p value as ttest2 ... No, it doesn't say that. ...

4 years 前 | 0

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Summation of specific range of matrix
n = size(Q_all, 1)/56; Q_aus = (0); for i = 1:44 Q_aus(i, 1) = sum(sum(Q_all(56*i-55:56*i,:),2)); end

4 years 前 | 0

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How to create two independent Normal distribution ?
You basically can generate multiple independent normal random variables form a multivariate normal dist. You just need to define...

4 years 前 | 1

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Comparing data in a matrix/table
One way would be to use groupsummary: tab = a1 a2 a3 a4 ________ ________ __ __ ...

4 years 前 | 1

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Rename 10000 Text files
files = {'tab1.txt', 'tab2.txt'}; target = replace(files, 'tab', ''); cellfun(@(x, y)movefile(x, y), files, target)

4 years 前 | 0

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help with regexp on txt file
str = '16/12/2020 18:30:59.443 Ico 3 Vco 1e7 Ico -3.2e+8 Vco 1.12e-7 Ico -3200 Vco 2.345e14'; regexp(str, '(?<=(Vco|Ico)...

4 years 前 | 1

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Changing color of a certain cell in a matrix after breaking a for-loop
You could overlay red rectangles on those cells passing the predefined cutoff (if you wanna stick with the summer colormap). ...

4 years 前 | 0

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Writing Matlab Table to File
First of all, you are using fprintf incorrectly, and thankfully all MATLAB errors are quite intuitive. This one tells you, you'v...

4 years 前 | 0

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Why I get 1×0 empty double row vector?
xq1 (and therefore X1) simply may don't contain min(oh1) since you are discretizing [0, max(oh1)]. What you can do is to find th...

4 years 前 | 0

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EMBL RESTful API post request error
You are almost there, except that MATLAB doesn't have a dictionary data type as Python3 has, so you should construct a struct in...

4 years 前 | 2

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Error using plot Vectors must be the same length.
The error is quite clear, 0:200 size doesn't match that of K. numel(0:200) is 201 while numel(K) is 199. It's better to replace ...

4 years 前 | 0

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Move multiple rows without swapping
H = randi([0 1], 6, 10) H = 0 1 0 1 1 0 0 0 1 0 1 1 1 0 1 ...

4 years 前 | 0

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How to get the mean of a graph ?
If you have the figure file (*.fig) the easiest way is just to open it and from Tools menu select Data statistics.

4 years 前 | 0

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take a part from name
If the structure of your string always conforms to the above leading/trailing underlines, you can use regexp: str = 'CC5_ts1_CC...

4 years 前 | 0

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Fancy Correlation Plots in MATLAB
Maybe something like this can work for you (after more polishing) % sample correlation matrix r = normalize(randn(10, 10), 'ra...

4 years 前 | 1

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Scatter with different colors based on id column
What abou this? scatter(positionX, positionY, sz, ID, 'filled') % example scatter(rand(10, 1), rand(10, 1), 200, randi(5, 1...

4 years 前 | 0

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How to correctly set up a particular Paired ANOVA test?
You can use ranova, but as you've realized it does not do multiple comparisons for you. You can do the post-hoc test with pairwi...

4 years 前 | 0

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Program should continue running the remaining script
return is quite intuitive and it does what it's suppoed to do: Returns control to invoking script or function. If you wanna cont...

4 years 前 | 2

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how to open multiple .txt files?
If all the files have the same structure/data format, you can use datastore to merge them: fileNames = {'t1.txt', 't2.txt', 't3...

4 years 前 | 0

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Compare two tables arrays of different sizes
% create two tables [t1, t2] = deal(table("0" + (1:5)', "blah" + (1:5)',... repmat(1:3, 5, 1), 'VariableNames', {'v1', 'v2...

4 years 前 | 0

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Matlab plugin and Rstudio packages
There are some equivalent R functions in MATLAB (e.g. here). But there is no tool that can automatically and perfectly convert a...

4 years 前 | 0

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How could I change the axis for a boxplot that is automatically produced from ANOVA test?
You can set XTickLabel property of the generated boxplot. mydata = randn(20, 3); anova1(mydata); set(gca, 'XTickLabel', {'A',...

4 years 前 | 1

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dot product between two different size of matrix
X = sum(bsxfun(@times, A, B), 2);

4 years 前 | 2

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Calculate confidence interval of data set
I'm not sure if you want to calculate CI or something like reference range. Regardless, as you can see on quantile help page, it...

4 years 前 | 0

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How can I make one vector out of two vectors with different lengths?
A = [1 1 1 1] B = [0 0 1 0 1 0] C = [B, A];

4 years 前 | 1