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Ive J

Last seen: 7 giorni fa Attivo dal 2013

Computational biologist.

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Right measure for logistic regression of imbalance data and dealing with Complete Separation
It's probably a bit late for your original problem, but since it's an important question and MATLAB still lacks such important f...

8 mesi fa | 0

Inviato

bfilereader: Efficient processing of big delimited files in MATLAB

Risposto
How to get the sum of squares in GLM model summary ?
You can get SST, SSE and SSR: mdl = fitglm(rand(100, 2), randi([0 1], 100, 1), 'dist', 'binomial', 'link', 'logit'); mdl.SSE...

10 mesi fa | 0

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Domanda

tall array within a parfor?
Consider the following scenario: ds = datastore(...); dst = tall(ds); parfor ... % warning here: dst is a broadca...

10 mesi fa | 1 risposta | 0

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Sort cell numbers ?
If by sort, you mean sort within each element of cell array: G = {[-83;-84] [-65] [-50;-47] [-33;-30] [-26;-22] [-16;-15] [-6; ...

10 mesi fa | 0

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Using movmean to calculate mean of first and last element in array

10 mesi fa | 0

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exportgraphics dynamic file name
% A = {'name1', ...} for k = 1:16 %rest of the code c = colorbar; c.Label.String = A{k}; ...

10 mesi fa | 1

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stepwiseglm model seems to be missing parameters?
It does include both. You should mind the model formula in MATLAB (AKA Wilkinson Notation): x1*x2 is x1 + x2 + x1:x2. See also...

10 mesi fa | 0

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Create a double identity matrix matlab
Maybe not the best way, but works: % taken from doc kron n = 12; I = speye(n, n); E = sparse(2:n, 1:n-1, 1, n, n); K = fu...

11 mesi fa | 0

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Vector dimesions are different before encoding json and after decoding json
How about this? mystr.f1 = 1:4; mystr.f2 = (1:4).'; js = jsonencode(mystr); newstr = jsondecode(js) fnames = fieldnames...

11 mesi fa | 0

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How do I match an annotations.json file with their respective images from an image folder?
Try this js = jsondecode(fileread("annotations.json.txt")) % file extension was changed only for upload % get info of first ...

11 mesi fa | 0

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How to add to Matlab a path with a @Folder

11 mesi fa | 2

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Can MATLAB save the Profiler results table (Function Name, Calls, etc.) to a text file or a spreadsheet?
info = load("info.mat").info; infotab = struct2table(info.FunctionTable); infotabMain = infotab(:, ["FunctionName", "NumCalls"...

11 mesi fa | 0

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Risposto
Estimate p-values of fitted parameters using armax from sysid toolbox
armax returns parameters and their uncertainties; then you can calculate the p-values. load iddata9 z9 na = 4; nc = 1; sys ...

11 mesi fa | 0

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Risposto
Optimization of manipulating an array
a = [1, 0, 5, 0, 6, 0, 12, 0]; b = a; a_adj_mean = movmean(a(1:2:end), 2); zero_idx = a == 0; b(zero_idx(1:end - 1)) = a_a...

11 mesi fa | 0

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Risposto
calculate the number of times each codon appears in a .mat file
Maybe this example would help: % create a random DNA seq dna_codes = ['A', 'T', 'G', 'C']; dna_str = string(dna_codes(randi(n...

11 mesi fa | 0

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jsonecode doesn't support complex doubles
Here says: "JSON has no standard way to represent complex numbers, so there is no way to test for them in JSON Schema." Here a...

11 mesi fa | 0

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Increase width of x axis
You need to set gca and not gcf: set(gca, 'Position', ...)

11 mesi fa | 0

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Combine hundred of mat files into one mat file (same quantity of row and column)
You can load all together: files = ["bearing1_1_1.mat", "bearing1_1_2.mat"]; % add all files here, use dir or ls ds = fileData...

11 mesi fa | 0

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retrieve data from a website with multiple pages

11 mesi fa | 0

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Find the position of elements of an array in another array and measure the euclidean distance between two array elements.
X = [11 12 13 21 22 23]; A = [11 22 21 13 12 23]; B = [11 13 21 23 22 12]; [~, Q] = ismember(X, B) [~, P] = ismember(X, A)...

11 mesi fa | 0

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Risposto
Create timeseries of a 3d scattered plot
If you want to create an animation (GIF for instance) or a movie (e.g. AVI), you can: % see: https://mathworks.com/matlabcentra...

12 mesi fa | 0

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How to execute for-loop iterations in parallel
You don't need even a loop (parfor aside) for this (and I guess you don't even need ind2sub depending on your true purpose here)...

12 mesi fa | 0

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Fixed Effects Design Matrix Must be of full column rank with multiple categorical predictors
The error is self-explanatory, and the reason is full dummy variable scheme you're using (why?). See here https://mathworks.com/...

12 mesi fa | 0

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Why does my graph get sent to the end of the html when I publish it?
I cannot reproduce this behavior.

12 mesi fa | 0

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Why do I receive Vectors must be the same length error in this code?
Error is very obvious: y and t1 don't have the same length. Try this t1 = linspace(1, max(y), length(y)); plot(t1, y)

circa un anno fa | 0

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Can I use my CPU and GPU simultaneously for Numerical Simulation?
Technically, yes you can (given that you've installed CUDA) combine both. However, whether or not you get anything useful out of...

circa un anno fa | 0

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Make a 2D plot with one arbitrary axis
You can start with something like this bpoints = [6.88, 7.84]; color = summer(numel(bpoints) + 1); % or whatever colors you li...

circa un anno fa | 0

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Risposto
How to compare two different excel sheets specific columns for like values