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Ive J


Last seen: 2 jours ago |  Active since 2013

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Computational biologist.

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bfilereader
bfilereader: Efficient processing of big delimited files in MATLAB

environ un mois ago | 2 downloads |

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Answered
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...

environ 2 mois ago | 0

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Question


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

environ 2 mois ago | 1 answer | 0

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Answered
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; ...

2 mois ago | 0

Answered
Using movmean to calculate mean of first and last element in array
What about this? a = [1 5 8 10]; ma = movmean([a, a(1)], [0 1], 'Endpoints', 'discard')

2 mois ago | 0

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

2 mois ago | 1

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Answered
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...

2 mois ago | 0

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Answered
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...

3 mois ago | 0

Answered
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...

3 mois ago | 0

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Answered
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 ...

3 mois ago | 0

Answered
How to add to Matlab a path with a @Folder
See here www.mathworks.com/matlabcentral/answers/1659190-why-addpath-is-not-working?

3 mois ago | 2

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Answered
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"...

3 mois ago | 0

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Answered
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 ...

3 mois ago | 0

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Answered
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...

3 mois ago | 0

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Answered
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...

3 mois ago | 0

Answered
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...

3 mois ago | 0

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

3 mois ago | 0

Answered
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...

3 mois ago | 0

Answered
retrieve data from a website with multiple pages
My answer doesn't totally solve your problem, but addresses your main questions (hopefully!). Before parsing the HTML itself, w...

3 mois ago | 0

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Answered
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)...

3 mois ago | 0

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Answered
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...

4 mois ago | 0

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Answered
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)...

4 mois ago | 0

Answered
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/...

4 mois ago | 0

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

4 mois ago | 0

Answered
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)

4 mois ago | 0

Answered
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...

4 mois ago | 0

Answered
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...

4 mois ago | 0

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Answered
How to compare two different excel sheets specific columns for like values
xlsread is deprecated, avoid it. fullTab = readtable('File1.xlsx'); denseTab = readtable('File2.xlsx'); [idxFull, idxDens...

4 mois ago | 0

Answered
How to extract a subset of a field from a structure while keeping respective information from the other fields?
field components doesn't have the same size as others. Maybe it's better if you provide part of your struct at least. Anyways, y...

4 mois ago | 2

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Answered
Read file whose name has a pattern that is part of another file name pattern
Try this files = {dir("*daily.nc").name}.' {'data1.4xdaily.nc'} {'data12.daily.nc' } {'data2.4xdaily.nc'} {'...

4 mois ago | 0

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