Question

Get coordinates of points from an image
Hello, I would like to know how to obtain the coordinates of p number of random points from an image: how to call an image ( d...

environ 5 ans il y a | 2 réponses | 0

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Question

Subtraction matrix for all values
column 1 - column 2; column 1 - column 3; column 1 - column 4...(rest of subtractions)..olumn 4 - column 4. How would I appr...

environ 5 ans il y a | 1 réponse | 0

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Question

Not sure how to solve equations using newton-Raphson method
Can anyone help me solve these two equation using newton-raphson method 5/2*cos(x(1))+3*cos(x(1)+x(2))-5 5/2*sin(x(1))+3*sin(x...

environ 5 ans il y a | 1 réponse | 0

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Question

Does anyone have any resources for modelling a distribution network and charging an electric vehicle from it
I want to do a project that solves an optimisation task for Electric Vechile charging from the Low-Voltage power network. Howeve...

plus de 5 ans il y a | 1 réponse | 0

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Question

Filenames in MATLAB - directory
Hello, So currently, what I'm doing it's prompting out window to select folder, I then was thinking of using a foor loop that ...

plus de 5 ans il y a | 1 réponse | 0

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Question

Export_fig - Ghostscript program not found
Hi, I downloaded the export_fig zip from https://github.com/altmany/export_fig named 'export_fig-master'. I unzipped the fil...

plus de 5 ans il y a | 1 réponse | 0

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Question

for loop with a spread
Hi guys, I wanted to get an idea on how I should approach a problem. Say for example I have a 100x48 matrix and I want to get ...

plus de 5 ans il y a | 1 réponse | 0

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Question

How to display images from nifti file format in Matlab?
I have a COVID-19 CT segmentation dataset where all images are in .nii file format. Each image file has mulitple slices (512*51...

plus de 5 ans il y a | 1 réponse | 0

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Question

is it a normal display of the command window on MATLAB for window? and how to fix if it needs attention?

plus de 5 ans il y a | 1 réponse | 0

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Question

String scalar or character vector must have valid interpreter syntax.
I want to add: ylabel('$\mid H(f) \mid$ (kg{s^{-1}}/kg{s^{-1}})', 'interpreter', 'latex'); Where I want the first part ins...

plus de 5 ans il y a | 1 réponse | 0

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Question

reinforcement learning toolbox ---fail to train stores saved agents in a MAT-file in the folder
%% Train Agent doTraining = false; if doTraining % Train the agent trainingStats = train(agent,env,trainOpts);...

plus de 5 ans il y a | 1 réponse | 0

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Question

String scalar or character vector must have valid interpreter syntax.
I want to add: ylabel('$\midH(f)\mid$ (deg/m)', 'interpreter', 'latex') error: String scalar or character vector must have va...

presque 6 ans il y a | 3 réponses | 0

3

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Question

Cannot plot iterations.
I'm trying to plot iterations but it doesn't seem to be working. The figure pops up but no points do. This is confusing because...

presque 6 ans il y a | 1 réponse | 0

1

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Question

How to find settling time?
Hello I want to be able to find the time taken (number of frames) for each of the peaks to reach the new stabilising value in ...

presque 6 ans il y a | 1 réponse | 0

1

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Question

How to locate significant points in a graph?
Hi So I've plotted a graph of two variables from a 118000x2 matrix: Frames and Conductivity. I've attached a picture of the gra...

presque 6 ans il y a | 1 réponse | 0

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Question

4d plotting with slices
Hello :) I have 4d data (x y z coordinates and and V). I am hoping to represent the data similar to the slice function approa...

plus de 6 ans il y a | 1 réponse | 0

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Question

Plot 4d data
hi :) how can one import an excel sheet with x, y, z and V columns as a 3d matrix? I am trying to plot the V values over a co or...

plus de 6 ans il y a | 1 réponse | 0

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Question

Trouble with MATLAB Triple Integral
I'm attempting to evaluate this integral (and equation) where 'a' and 'x' are just inputs, and x' is (x,y,z). also: x will hav...

plus de 6 ans il y a | 1 réponse | 0

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Question

Beginner MATLAB question (I just started using matlab a week ago)
Please help give the function to solve this. Thank you

presque 7 ans il y a | 1 réponse | 0

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Réponse apportée
Dummy Variable ased on categorical vars in table
Thanks!! Now I tried Data.DV = zeros(27,1) for x = 1:27 if strcmp(Data(x).BS, 'Total assets') Data.DV(x) =1; ...

environ 7 ans il y a | 0

Question

Dummy Variable ased on categorical vars in table
hi everyone! I'm tying to create a dummy variable in a table based on two categorical variables. My table contains numerical a...

environ 7 ans il y a | 3 réponses | 0

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Réponse apportée
Needed frequency analysis of 3D Plot obtained from Manometry of Human colon using wavelet analysis.
One approach for this problem would be split the data into two components, i.e. sensor position as a function of time and amplit...

plus de 7 ans il y a | 0

Question

I have code which calculates the electric potential due a single charge. The results are concentric circles (Correct results) but don't match the theoretical data
Here is the code clear all; close all; clc; Nx = 11; %% Dimension of x axis Ny = 11; %% Dimension of x axis eps0 = 8.85e-12...

plus de 7 ans il y a | 1 réponse | 0

1

réponse

Question

Lock scroll position when continuous uitable updates
Hi, I have a uitable that has a live data subscription that is being refreshed every x seconds. However, if you are scrollin...

presque 8 ans il y a | 1 réponse | 0

1

réponse

Question

Nested Tables and UI Tables. Using GUIDE UI figure.
Hi, I want to have an interactive figure with a ui table in it. However, I want to display the table such that: * Outer table...

presque 8 ans il y a | 1 réponse | 0

1

réponse

Réponse apportée
Wavelet Webinar, example mistake!!!
This topic has been addressed here: https://www.mathworks.com/matlabcentral/fileexchange/59924-wavelet-tech-talks-matlab-cod...

presque 8 ans il y a | 0

Question

how can I remove the background this image , I do thresholding but I can't remove the background( I want only the dark object and determine their location) ?
<< <</matlabcentral/answers/uploaded_files/107126/bio1.jpg>> >>

presque 8 ans il y a | 1 réponse | 0

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Question

Subscript Indices must either be real positive intergers or logicals - not sure where i'm going wrong.
I am trying to call the RK4 function below in order to find the second initial value for my main function. However it gets stuck...

presque 8 ans il y a | 1 réponse | 0

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Question

What is a simple code for the chapman cycle involving only hydrogen and oxygen.This code should produce a curve but it only produces straight lines?
function Chapman_cycle y0= [2e17 1e-6 5e12]; tspan=[0 100]; %tspan=[0,1.0e-5,1.0e-3,0.1,0.5,1,2,4,6,8,10,20,30,40,50,...

presque 8 ans il y a | 1 réponse | 0

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Question

Hello can someone show me a simple code to show the earths orbit around the sun using ordinary differential equations.
function Earthsorbit e=2; y0=[1 2*pi 0 -pi]; tspan=[0, 10]; options = odeset('RelTol',1e-4,'AbsTol',1e-4); ...

environ 8 ans il y a | 2 réponses | 0

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