Recent questions tagged MATLAB

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matlab - Understanding concept of Gaussian Mixture Models

I'm trying to understand GMM by reading the sources available online. I have achieved clustering using K-Means ... of clustering. Thank you See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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699 views

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matlab - how to replicate an array

I want to make a function like this >> matdup([1 2],3,4) %or any other input that user wish to enter ans= 1 2 ... at 6 m(i, j)= input Any idea? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matlab - How can I change the color of bars in bar graph?

I'd like to create a bar graph where I change the color of some bars. The code for my bar graph is the following ... have no idea how to do it. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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635 views

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matlab - How to correct "Function definitions are not permitted at the prompt or in scripts"

I want to write the code for this equation:T2(i)=T1(i)+2*[T1(i-1)+T1(i+1)] syms T1 T2 function [ ... in scripts" How can I solve this problem? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matlab - How to generate a non-linear colormap/colorbar?

I would like to show a non-uniform colorbar as in the first picture. I have tried the code below. 'mycamp4' is ... , v_2) Picture 1: Picture 2: See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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693 views

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matlab - Building a matrix by merging the same row vector multiple times

Is there a matlab function which allows me to do the following operation? x = [1 2 2 3]; and then based on x I want to ... ; 1 2 2 3; 1 2 2 3] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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888 views

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matlab - Load all the images from a directory

I have certain images in a directory and I want to load all those images to do some processing. I tried using the ... jpg...how can i do that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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918 views

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matlab - How to normalize / denormalize a vector to range [-1;1]

How can I normalize a vector to the range [-1;1] I would like to use function norm, because it ... denormalize that vector after normalization? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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591 views

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matlab - Align already captured rgb and depth images

I am trying to allign two images - one rgb and another depth using MATLAB. Please note that I have checked several ... matlab to do the same ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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622 views

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matlab - How to plot inequalities

I would like to plot the following inequalities: y < p2(1 - p1) and x < p1(1 - ( y / (1 - p1))). ... within [0,1]. I would appreciate any help! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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849 views

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matlab - Suppress exponential formatting in figure ticks

Tick labels for ticks bigger than about 10'000, get formatted to 1x10^4 for example. Whereas the exponential ... seen on the following figure. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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680 views

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matlab - What does operator "dot" (.) mean?

Given the code : A = [1 2 3; 3 2 1] B = A.^2 The output : B = 1 4 9 9 4 1 But if I do ... (.^) instead. What does the operator . do exactly ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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923 views

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matlab - Multiply a 3D matrix with a 2D matrix

Suppose I have an AxBxC matrix X and a BxD matrix Y. Is there a non-loop method by which I can multiply each of the C AxB matrices with Y? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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738 views

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matlab - How to deal with overflow and underflow?

I am new to Matlab and trying to figure out how can I deal with overflow and underflow arithmetic when the ... range) any help is appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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648 views

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matlab - Fast Algorithms for Finding Pairwise Euclidean Distance (Distance Matrix)

I know matlab has a built in pdist function that will calculate pairwise distances. However, my matrix is so ... help is greatly appreciated! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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569 views

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matlab - Difference of handle and values classes

I have some C++ background and want to use classes in Matlab. What is the difference between a handle and a ... when I pick a handle class. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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778 views

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matlab - Shading an area boundered by a curve

What would be the easiest way to lightly shade (or hatch; or anything to set it different from the rest) an area in a ... = x.^2.; plot(x,y); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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881 views

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matlab - Change color of 2D plot line depending on 3rd value

I have a data set that looks like this 140400 70.7850 1 140401 70.7923 2 140402 70.7993 3 140403 70 ... this? Without looping if possible. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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756 views

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matlab - How to set custom seed for pseudo-random number generator

I need to perform few tests where I use randn pseudo random number generator. How can I set the seed on my ... use it for seeding the generator? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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651 views

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matlab - How can I divide each row of a matrix by a fixed row?

Suppose I have a matrix like: 100 200 300 400 500 600 1 2 3 4 5 6 10 20 30 40 50 60 ... I wish ... I do it (without writing an explicit loop)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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772 views

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matlab - quiver3 arrow color corresponding to magnitude

I want the color of each arrow in a quiver3 plot from MATLAB to correspond to the magnitude of each ... color corresponding to their magnitude. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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755 views

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matlab - Absolute error of ODE45 and Runge-Kutta methods compared with analytical solution

I would appreciate if someone can help with the following issue. I have the following ODE: dr/dt = 4*exp(0. ... method, why does it looks nicer? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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742 views

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matlab - How to find the index of the n smallest elements in a vector

How can I get the indices of "n smallest elements" in a 1D array in MATLAB? The array is a row vector. I can ... 63.3865 50.1101 and so on... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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596 views

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matlab - Proper way to add noise to signal

In many areas I have found that while adding noise, we mention some specification like zero mean and variance. I need ... noise .* snr(I); end See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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474 views

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matlab - What is a spectrogram and how do I set its parameters?

I am trying to plot the spectrogram of my time domain signal given: N=5000; phi = (rand(1,N)-0.5)* ... . Any help will be greatly appreciated! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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593 views

1 answer

matlab - How to create an executable .exe file from a .m file

I was wondering if there is a way to create a '.exe' file from ' .m' file in MATLAB, such that it can be ... by a user using his own data files. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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688 views

1 answer

matlab - Matrix "Zigzag" Reordering

I have an NxM matrix in MATLAB that I would like to reorder in similar fashion to the way JPEG reorders its subblock pixels: ... 3 6 8 9 7 8 9 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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721 views

1 answer

matlab - How do I compare all elements of two arrays?

I have two big arrays with about 1000 rows and 1000 columns. I need to compare each element of these arrays and ... How can I do this faster? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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