提问

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...

4 years 前 | 2 个回答 | 0

2

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提问

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...

5 years 前 | 1 个回答 | 0

1

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提问

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...

5 years 前 | 1 个回答 | 0

1

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提问

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...

5 years 前 | 1 个回答 | 0

1

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提问

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 ...

5 years 前 | 1 个回答 | 0

1

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提问

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...

5 years 前 | 1 个回答 | 0

1

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提问

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 ...

5 years 前 | 1 个回答 | 0

1

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提问

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...

5 years 前 | 1 个回答 | 0

1

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提问

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

5 years 前 | 1 个回答 | 0

1

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提问

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...

5 years 前 | 1 个回答 | 0

1

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提问

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);...

5 years 前 | 1 个回答 | 0

1

个回答

提问

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...

5 years 前 | 3 个回答 | 0

3

个回答

提问

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...

5 years 前 | 1 个回答 | 0

1

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提问

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 ...

5 years 前 | 1 个回答 | 0

1

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提问

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...

5 years 前 | 1 个回答 | 0

1

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提问

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...

6 years 前 | 1 个回答 | 0

1

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提问

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...

6 years 前 | 1 个回答 | 0

1

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提问

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...

6 years 前 | 1 个回答 | 0

1

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提问

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

6 years 前 | 1 个回答 | 0

1

个回答

已回答
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; ...

7 years 前 | 0

提问

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...

7 years 前 | 3 个回答 | 0

3

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已回答
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...

7 years 前 | 0

提问

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...

7 years 前 | 1 个回答 | 0

1

个回答

提问

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...

7 years 前 | 1 个回答 | 0

1

个回答

提问

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...

7 years 前 | 1 个回答 | 0

1

个回答

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

7 years 前 | 0

提问

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>> >>

7 years 前 | 1 个回答 | 0

1

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提问

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...

7 years 前 | 1 个回答 | 0

1

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提问

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,...

7 years 前 | 1 个回答 | 0

1

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提问

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); ...

7 years 前 | 2 个回答 | 0

2

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