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Speed up Some Code
% generate and collect all the P's first nJ = numel(J); P = cell(1,nJ); for ii = 1:nJ P{ii} = randperm(k,J(ii))+1; end ...

fast 2 Jahre vor | 0

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how to aviod the two loops
[X,Y] = meshgrid(x,y); A = [X(:),Y(:)];

fast 2 Jahre vor | 0

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how to use "range" in uislider
s = uislider(fig,"Limits",[1 50]); <https://www.mathworks.com/help/matlab/ref/matlab.ui.control.slider-properties.html>

fast 2 Jahre vor | 1

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str2num is returning and empty matrix: []
You don't need to use cell2mat; just use curly braces to get the contents of a cell in a cell array. For example: datetempDat ...

fast 2 Jahre vor | 0

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str2num is returning and empty matrix: []
There may be a character you don't see, at the beginning of the file, which is included by importdata at the beginning of the fi...

fast 2 Jahre vor | 0

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How do i extract a column from an array
This stores the 3rd column of the array A as Col1 (and displays Col1 in the command window): Col1 = A(:,3) Is that what you wa...

fast 2 Jahre vor | 0

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graph multiple excel or csv files
% get info about the (4) files S = dir('*.xlsx'); % construct full path file names filenames = fullfile({S.folder},{S.name}...

fast 2 Jahre vor | 0

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Different Output value of Functions
Implementation 1 has x*y^2 in the third term; Implementation 2 has x1*x2^3 in term3. f_value = (1.5- x+ x*y)^2 + (2.25 - x + x*...

fast 2 Jahre vor | 0

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Placing transparent rectangles on top of a plot
It's hard to say for sure what the problem is without the data, but one problem might be that the axes Y-Limits are outside wher...

fast 2 Jahre vor | 1

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How do I use only one legend entry for sets of xlines?
One way is to explicitly state which line objects to put in the legend, in the call to legend. For example: subplot(3,1...

fast 2 Jahre vor | 1

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Plot two areas of logarithmic plots
load('data_x.mat') figure; plot(x1,y,'b','Linewidth',1); hold on; plot(x2,y,'r','Linewidth',1); set(gca,'xscale','log','...

fast 2 Jahre vor | 0

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Variable Browser Tab Issue
It looks like the Variable Browser for that particular variable became undocked. See the following answer for how to dock it aga...

fast 2 Jahre vor | 0

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Need help in MATLAB tiled layouts (nested)
Something like this? t=tiledlayout(2,2); [X,Y,Z] = peaks(20); % Tile 1 t1=tiledlayout(t,1,2); nexttile(t1) surf(X,Y,Z) ne...

fast 2 Jahre vor | 1

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how to create array datetime
load matlab_A A hh = floor(A(:,4)/100); mm = mod(A(:,4),100); ss = zeros(size(A,1),1); B = [A(:,[1 2 3]) hh mm ss]; D ...

fast 2 Jahre vor | 1

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Overlaying three functions on a single plot
To avoid the error, use element-wise multiplication (.*), because * is for matrix multiplication. https://www.mathworks.com/hel...

fast 2 Jahre vor | 0

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>> qardl(data, ppp, qqq, tau) Unrecognized function or variable 'data'.
To run this function, you'd need to supply the inputs data, ppp, qqq, and tau. These are described in the comments at the top of...

fast 2 Jahre vor | 0

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Why does the tiledlayout keep the whitespace between tiles although TileSpacing is 'tight'
I guess the "tiled" part of "tiledlayout" implies that all contained axes are the same size and that the amount of space between...

fast 2 Jahre vor | 0

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Crashing on size(img)
You have a variable called "size". If this is a script, do clear size and then run the script again. If this is a ...

fast 2 Jahre vor | 1

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Sort Table Variable with Cell Arrays
t = table(t1,t2); [~,idx] = sort(t1(3:end)); t = t([1; 2; 2+idx],:);

etwa 2 Jahre vor | 0

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Why is my code seemingly ignoring some of the for loop commands?
d is computed anew on each iteration of the for loop; thus after it's done the result you see is the last d that was computed, e...

etwa 2 Jahre vor | 1

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Error due to not enough input arguments in ' C_c = cold.m_dot_c*Cold.c_p_c; %W/K '
The function find_UA expects two inputs. If you provide fewer than two inputs (e.g., by clicking the green Run button in the MAT...

etwa 2 Jahre vor | 0

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How can I display a line in 3D with a colour gradient?
n = 10; x = linspace(1, 2, n); y = cos(x); z = y.^2; points = [x' y' z'] surf(points(:,[1 1]),points(:,[2 2]),points(:,[3...

etwa 2 Jahre vor | 2

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Timer function to refresh the data
Make timerObj an app property so that the functions within your app can access it. properties (Access = private) timerObj ...

etwa 2 Jahre vor | 0

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using bar3(z) to plot in unusual data visualization
red_data = [ 5 5 20 35 15]; blue_data = [30 25 20 15 5]; green_data = [30 25 35 5 5]; Nr = numel(red_data); Nb = nu...

etwa 2 Jahre vor | 0

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Removing empty cells from cell array with multiple rows while preserving the rows
C = { ... 'Right knee','Head','Elbow/forearm',[]; ... 'Hand/wrist',[],'Pelvis',[]; ... [],[],'Ankle/foot',[]; ......

etwa 2 Jahre vor | 0

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How code with for loop to get an array?
You can make I a 3D array of size Nx-by-Nx-by-numel(F). clc;close all;clear all; lambda = 532; k = 2*pi/lambda; z=[1.037000...

etwa 2 Jahre vor | 0

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Why is this dot notation used?
.' is transpose, and ' is complex conjugate transpose, so when x is real, x.' and x' are the same. Example, real x: x = magic(...

etwa 2 Jahre vor | 0

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Input folders or files contain non-standard file extensions.
The error is happening on this line: ads = audioDatastore(output_dir, ... 'IncludeSubfolders',true, ... 'LabelSource'...

etwa 2 Jahre vor | 0

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Pass variable name through variable of a custome save function made error
In saveModel, the variable model is a string variable containing the name of the struct variable you want to save, right? The p...

etwa 2 Jahre vor | 0

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How to use my Line and Collum in Excell as X and Y for my graphic?
xlim(x([1 end]))

etwa 2 Jahre vor | 0

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