Recent questions tagged MATLAB

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matlab - Fun depending on order of subs and values in accumarray

In accumarray() the first note about 'subs', first appeared in the MATLAB R14sp3 docs, says: Note If the ... using the same subs and val. 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 - Powers of a matrix

I have a square matrix A (nxn). I would like to create a series of k powers of this matrix into an nxnxk multidimensional ... :,j)=A^(j-1); 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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matlab - Python 2.7: Area opening and closing binary image in Python not so accurate

I am using Python 2.7 and I used following Python and Matlab function for removing noises and fill holes in this ... in Python not in Matlab. ) 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 - EEG bandpass filter in mat lab

I'm trying to filter theta range (3-8 Hz) from a 10 min long EEG signal with sampling rate of 500Hz. This is my ... plot(f,z); xlim([0 150]); 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 - Curve fitting with y points on repeated x positions (Galaxy Spiral arms)

I currently have a MATLAB program which takes RGB images of traced spiral arms from galaxies and selects the biggest ... type of curve at all? 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 - Problem concatenating a matrix of numbers with a vector of strings (column labels) using cell2mat

I'm a Mac user (10.6.8) using MATLAB to process calculation results. I output large tables of numbers to ... my original cell array of labels? 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 double comparison

I am trying to compare an array of doubles to a scalar double for equality, but equality is never recognized under ... of all 0s is obtained. 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 wrap an already existing function with a new function of the same name

Is it possible to create a wrapper around a function that has the exact same name as the original function? ... on displaying very large array? 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 divide a matrix into equals parts?

Let's say I have a 100x100 matrix, I want to divide it into equal parts of 10x10. The problem is that the ... parts. Or am I missing something? See Question&Answers more detail:os...

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

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612 views

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matlab - Factorization of an integer

While answering another, I stumbled over the question how I actually could find all factors of an integer number ... a vector length < 11. 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 determine if an output of a function-call is unused?

Say I have a function foo that can return three values given an input: function [a,b,c] = foo( ... discarded from within the function itself? 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 - Show the intersection of two curves

If I have two plots defined by two different equations: x = 0:0.01:30; y1 = x .^2 + 2; y2 ... programatically (as in the following plot)? 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 - Interweaving vectors

I would like to interweave two vectors in MATLAB. In fact, I'd actually just like to add a zero between each ... or both of the above questions. See Question&Answers more detail:os...

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

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656 views

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matlab - How can I detect the maximum-sized rectangle that I can draw onto the mask?

I'm making an image processing project and I have stuck in one the project's steps. Here is the situation; This ... both of them in my project. See Question&Answers more detail:os...

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

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512 views

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matlab - Function for 'does matrix contain value X?'

Is there a built in MATLAB function to find out if a matrix contains a certain value? (ala PHP's in_array()) See Question&Answers more detail:os...

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

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974 views

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matlab - How to plot a hyper plane in 3D for the SVM results?

I just wondering how to plot a hyperplane of the SVM results. For example, here we are using two ... Matlab implementation would be handy. See Question&Answers more detail:os...

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

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671 views

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matlab - Looking for an Image Comparison/Pattern Recognition Library

The end goal would be to see if contains . the compare needs to support minor distortion, scaling, color differences, ... , c++, python, etc. See Question&Answers more detail:os...

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

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809 views

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matlab - Dynamic Legend (Updates in every recursion)

I got a for i=1:15. Inside I generate a variable d=1:0.01:10, which is the x'x axis and based ... iteration and the values of pitch,yaw. See Question&Answers more detail:os...

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

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779 views

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matlab - Waterfall plot python?

Is there a python module that will do a waterfall plot like MATLAB does? I googled 'numpy waterfall', 'scipy ... , but did not find anything. See Question&Answers more detail:os...

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

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513 views

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matlab - What is a function handle and how is it useful?

Can somebody explain to me the meaning of the @ (function handle) operator and why to use 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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734 views

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matlab - Filter matrix rows depending on values in a second matrix

Given a 2x3 matrix x and a 4x2 matrix y, I'd like to use each row of y to index into x. If the value in x is ... This results in: y = 2 1 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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532 views

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matlab - Difference between append and x = [x, element]

I've create an array X as X = [1 2 3 4 5] and I want to insert 0 at the end of it. Is there ... I can notice the difference. Thanks in advance! See Question&Answers more detail:os...

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

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860 views

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matlab - Rounding to n significant digits

I'm trying to write code in MATLAB that will round number to certain (as I ask) significant digits. I'm not sure how to do it. Any suggestions? See Question&Answers more detail:os...

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

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717 views

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matlab - Create an xy plot with two y axis

I have the following code. I'm trying to create an xy plot wth two y axis. However I only get one line down the ... plot(x,exp,x,ko,x,rst); See Question&Answers more detail:os...

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

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724 views

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matlab - Extract arbitrarily rotated plane of data from 3D array as 2D array

I have a 3D matrix of data in matlab, but I want to extract an arbitrarily rotated slice of data from ... seem to exactly match mine. Thanks See Question&Answers more detail:os...

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

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708 views

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matlab - How to compute inverse of a matrix accurately?

I'm trying to compute an inverse of a matrix P, but if I multiply inv(P)*P, the MATLAB does not return the ... What can I do in this situation? See Question&Answers more detail:os...

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

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583 views

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matlab - Efficient colon operator for multiple start and end points

Suppose I have the following two variables: start_idx = [1 4 7]; end_idx = [2 6 15]; I want to ... Function block. Thank you very much! See Question&Answers more detail:os...

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

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595 views

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matlab - Calculating distance of all the points in a region with each other

I have a region with about 144 points. What i want to achieve is to measure the distance of a point ... storing the coordinates of the points. See Question&Answers more detail:os...

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

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