Recent questions tagged MATLAB

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matlab - How I obtain bars with function bar3 and different widths for each bar?

I have the code: values = [1.0 0.6 0.1; 0.0 1.0 0.3; 0.9 0.4 1.0]; h = bar3(values); ... ii_mac.html. blah http://www.sdtools.com/help/mac.gif See Question&Answers more detail:os...

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

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867 views

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matlab - Rounding to a power of 10

I have a variable, tauMax, that I want to round up to the nearest power of ten(1, 10, 100, 1000...). I ... )); I'd really appreciate any help! See Question&Answers more detail:os...

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

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922 views

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matlab - Greek letters in axes labels are not working

I'm trying to use Greek letters in my xlabel of a plot. Every solution on the internet says that Matlab will accept ... a, 'abc1.png','png'); See Question&Answers more detail:os...

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

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782 views

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matlab - combinations totaling to sum

How would one go about generating a matrix with all the possible combinations of number totaling to a sum with ... to go about that. Regards See Question&Answers more detail:os...

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

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528 views

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matlab - Is it possible return cell array that contains one instance in several cells?

I write some mex function and have to return huge array of strings. I do this as following: mxArray * array = ... to release it? Thank you. See Question&Answers more detail:os...

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

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807 views

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matlab - comparing two image using histogram

I want to find the histogram of two images and find the similarity using Euclidean distance. I'm trying to ... ; %display the result to console See Question&Answers more detail:os...

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

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888 views

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matlab - How to generate a unit vector pointing in a random direction with isotropic distribution of direction?

I need to create a method to generate a unit vector in three dimensions that points in a random direction using ... isotropic part. Any ideas? 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 - How to customize App Designer figures in more ways than officially documented?

A recently published article in UndocumentedMatlab, mentions that App Designer figures are actually web pages using the ... available to us? See Question&Answers more detail:os...

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

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692 views

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matlab - How can I load part of a .mat file that is too big in memory for my machine?

I have a big .mat file that I want to process, but it is too big to fit in a single load. I thought ... one of them to the workspace? 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 - How to merge two figure files into a single file

This should be a problem with a trivial solution, but still I wasn't able to find one. Say that I have 2 matlab ... a very common task, I'd say. See Question&Answers more detail:os...

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

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542 views

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matlab - 3D Correspondences from fundamental matrix

In MATLAB I have calculated the Fundamental matrix (of two images) using the normalized Eight point algorithm ... pseudocode would be fantastic. See Question&Answers more detail:os...

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

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702 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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799 views

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matlab - Can we use addOptional and addParameter together?

inputParser provides addOptional and addParameter. The doc (https://www.mathworks.com/help/matlab/ref/inputparser-class ... Did I miss anything? See Question&Answers more detail:os...

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

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567 views

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matlab - How to perform RCNN object detection on custom dataset?

I'm trying to perform object detection with RCNN on my own dataset following the tutorial on Matlab webpage. Based ... of vehicle in an image? See Question&Answers more detail:os...

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

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800 views

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matlab - How to display labels above a histogram bin?

I have an array a(30,2) where the first column is a unique sample number and the second column is a value ... a) that fall into each bin? See Question&Answers more detail:os...

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

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985 views

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matlab - Curve fitting without toolbox

Without the curve fit toolbox how do you fit a function to data in MATLAB? In particular, how do you fit a ... where it is not an integer? 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 - Computing object statistics from the second central moments

I'm currently working on writing a version of the MATLAB RegionProps function for GNU Octave. I have most of it ... astray? Thank you very much. See Question&Answers more detail:os...

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

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1.1k views

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matlab - Operands to the || and && operators must be convertible to logical scalar values

I have a simple problem that I'm looking for a fast implementation in Matlab. I have an array of values, ... want to keep the code vectorized. See Question&Answers more detail:os...

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

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861 views

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matlab - Layering multiple images in 3D-space

Suppose we have a matrix I of size 49x49x5, corresponding to 5 images of size 49x49 stacked along the third ... clearer what I am after: See Question&Answers more detail:os...

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

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605 views

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matlab - Turning a binary matrix into a vector of the last nonzero index in a fast, vectorized fashion

Suppose, in MATLAB, that I have a matrix, A, whose elements are either 0 or 1. How do I get a vector of ... debugging time even if it is fast. See Question&Answers more detail:os...

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

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739 views

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matlab - issues of saving a large scale matrix to mat file

I was trying to save a matrix into a mat file, but the Matlab returns the following messages: Warning: Variable ... .3 listmatrix or sth else? See Question&Answers more detail:os...

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

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819 views

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matlab - arrayfun when each row of the array is an input

My situation is that I would like to map a scalar array A by a function with handle fun sending a row ... more efficient way jump to mind? See Question&Answers more detail:os...

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

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662 views

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matlab - SVD speed in CPU and GPU

I'm testing svd in Matlab R2014a and it seems that there is no CPU vs GPU speedup. I'm using a GTX 460 ... . Elapsed time is 21.546260 seconds. 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 modify an array in function?

MATLAB is a pass by value language. I have a recursive function that processes pixel's neighbors. It is ... recursive function modify an 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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769 views

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matlab - How can I display a 2D binary matrix as a black & white plot?

I have a 2D binary matrix that I want to display as a black and white plot. For example, let's ... that generalizes to different sized matrices. See Question&Answers more detail:os...

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

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655 views

1 answer

matlab - Increase the performance by removing CLEAR ALL

In Matlab 2014b, when I use CLEAR ALL at the beginning of the script I get the following warning, For improved ... when using a single 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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637 views

1 answer

matlab - Iterating an empty matrix using a for loop

I always assumed that iterating an empty vector using a for loop was the same as not having the loop at all. ... sense, or is this a bug? See Question&Answers more detail:os...

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

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598 views

1 answer

matlab - Normalization of an image

I applied some operations on a grayscale image and now I am getting new values but the problem is the intensity ... me what the problem is? See Question&Answers more detail:os...

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

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