Recent questions tagged MATLAB

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matlab - parfor doesn't consider information about vectors which are used in it

This is a part of my code in Matlab. I tried to make it parallel but there is an error: The variable gax in a ... = ggx(jo,m); end end end See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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901 views

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matlab - Finding number of all nested cells in a complex cell

I have a nested cell which represents a tree-structure: CellArray={1,1,1,{1,1,1,{1,1,{1,{1 1 1 1 ... I am looking for more precisely: Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matlab - Implementing imclose(IM, SE) in opencv

I want to detect the background of the following image whose foreground is always lots of black dots: img. ... background using opencv method? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matlab - Running a GUI requires opening the .fig file in GUIDE

I am trying to run a MATLAB GUI I have created. If I open the .fig file using GUIDE and press the ... reference field of non-structure array. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matlab - Using regionprops in Python

I am trying to analyze greyscale TIFF stacks, in which a given frame will look like this. I filter it ( ... for Matlab's bwconncomp function. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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555 views

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matlab - To categorize jet colormap by pixels of some colors

Data I want to categorize it by counting the following pixels through HSV (Hue-Saturation-Lightness) dark blue blue ... and/or papers for it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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548 views

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matlab - Object detecting using thresholding

I'm working on a program in matlab to detect an object in a sequence of images. The object I'm trying to ... % get rid of small unwanted pixels See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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606 views

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matlab - How to count number of 1 and 0 in the matrix?

I have an image of which I cut out only one column. After that I made it to be logical so there are ... distinct block. Anyone please help me. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matlab - Building an array while looping

I have a for loop that loops over one array... for i=1:length(myArray) In this loop, I want to do check ... into them in one shot. Many thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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matlab - Matrix with sliding window elements

I have time series, and I applying some user defined function to every W elements in time series. Right now I am just ... 10], [10, 14, 22]] See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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758 views

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matlab - Performance of `eval` compared to `str2func` to evalulate a function from a string

eval and str2func are both able to evaluate a function represented by a string, f.e. f='a^x+exp(b)+sin(c* ... 2] (as mentioned in the comments). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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851 views

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matlab - How to Build a Distance Matrix without a Loop (Vectorization)?

I have many points and I want to build distance matrix i.e. distance of every point with all of other points but I ... (i,j) = dist; end end See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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657 views

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matlab - Suppress function output

I have a short function which uses textscan to read data into a variable. My problem is that I always get this: ... just want to load my file. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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663 views

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matlab - Using a colon for indexing in matrices of unknown dimensions

When indexing matrices in MATLAB, can I specify only the first or last n dimensions, and have all others ... all the others dimensions"? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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720 views

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matlab - Second subplot disappearing

I have a weird (and probably simple to solve) problem. I tried to plot (using panel) two plots: a1 = subplot ... . Where is the problem? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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matlab - How to use parallel 'for' loop in Octave or Scilab?

I have two for loops running in my Matlab code. The inner loop is parallelized using Matlabpool in 12 processors ... searched for it in google. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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701 views

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matlab - Find elements meeting any of a number of criteria

I am trying to find the indices of elements in a vector that correspond to another vector, preferably without ... be found contiguously in JiSet See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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728 views

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matlab - how to read an integer array in MEX-function

I am passing an integer array of uint8 type from MATLAB to a MEX-function. How do I read these values? ... but mxGetPr returns double type. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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752 views

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matlab - How do I get the two last dimensions of an N-D array as a 2D array?

I have a 3D array in MATLAB, with size(myArray) = [100 100 50]. Now, I'd like to get a specific ... preferably to the third dimension as well. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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771 views

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matlab - Create a 3D matrix

How can I define a 3D matrix in MATLAB? For example a matrix of size (8 x 4 x 20) or add a 3rd dimension to an existing 2D matrix? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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783 views

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matlab - MCR libmwi18n.so file missing

I've just installed the Matlab MCR, and I tried to run a piece of code: ./run_test.sh /usr/local/MATLAB/ ... "${exe_dir}"/test $args fi exit See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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971 views

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matlab - Set data tips programmatically?

I need to be able to set data tips programmatically from a list of array of x axis values. For ... this programmatically through matlab script? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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795 views

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matlab - How to add 5% percent Gaussian noise to image

let define that: The "percent noise" number represents the percent ratio of the standard deviation of the white Gaussian ... .05*var(I(:))) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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764 views

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matlab - Why should the size of the kernel be odd?

When using the mean filter in image processing, why should the size of the kernel be odd? It Always takes a ... anyone explain it with reasons? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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795 views

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matlab - Image overlay with matrix

I have an image (png) that I want to put underneath a heatmap(so to speak) made from a and a 2D matrix of ... some other way to make this work? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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785 views

1 answer

matlab - Covariance Matrix of an Ellipse

I've been trying to solve a problem. I'm surprised I haven't been able to find anything really useful ... 2 covariance matrix of that ellipse? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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658 views

1 answer

matlab - How to save a structure array to a text file

In MATLAB how do I save a structure array to a text file so that it displays everything the structure array shows in the command window? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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809 views

1 answer

matlab - Change row vector to column vector

How can I change this into a column, at the moment all 750 entries are on one row? p = normal(1:750)-1; I have tried ... 750)-1; p = p(1:rows)'; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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