DGM
Hi, I'm nobody.
I don't belong here, but I have nothing better to do.
Matlab used to be part of my work.
Now it's part of my hobbies.
That's pretty sad, really.
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Content Feed
making repetitive code less clunky
You could simplify this with a loop if you wanted, though I'm sure there are other ways. Bear in mind what I mentioned in my co...
11 hours ago | 0
| accepted
each columun of a 2D matrix multiply with a 3D array
This is something, but I bet there are other ways too. This is about 10x faster on my hardware/version, but only about 2-3x fa...
3 days ago | 0
| accepted
Copy-pasting variables (values) to edior in 2021b
Just don't rely on some sort of automagic formatting of pasted content. If you want to save an array variable as a literal cons...
3 days ago | 0
To save each of sub-indices (luminance, contrast and structure) in SSIM
Unless you need something special, you should be able to do this with standard syntax for ssim(). Mind you, the SSIM is the mea...
3 days ago | 0
please give me answer what is wrong
Use elementwise division. x = 0:0.1:103; y = ((28*log(x) - 2*x - 12*x.^2.*log(x) - 4*x.^3.*log(x) - 12*x.*log(x) - 2*x.^2 - (2...
4 days ago | 0
| accepted
How to turn text into numbers
Well I'm sure there are more robust ways, but if all the file ever has is those two lines in that specific order with that speci...
5 days ago | 0
| accepted
How to close open contours
The contours are open because that's what describes the data. To close the contours misrepresents the behavior of the data at t...
6 days ago | 0
| accepted
Problme with Text analysis
I'm terrible with regex, but this might get you somewhere. Replaces everything but lowercase alpha and underscores. A = {'9.ba...
6 days ago | 0
I am missing the test signal "WashingMachine-16-8-mono-200secs.mp3" from the denoise example.
That should be included with the audio toolbox after R2019a. The files should be in $MLROOT/toolbox/audio/samples/ where $MLRO...
7 days ago | 0
Segment Image and Save as New Picture
You can't have an image of "just the dog", in the sense that the image must be a rectangular array. The background must be some...
7 days ago | 0
what is a(n) MATlab code that can help me calculate the volume of a cylinde then increase that result by 20% to get a result of 18m.
h0 = 15; dV = 0.2; hf = h0*(1+dV); fprintf('Oh my god, it''s %.2f meters tall! Aieee!',hf)
7 days ago | 0
| accepted
How to normalize signal to have mean=0 and amplitude 0 to 1
If you have a dataset where the mean is zero and the amplitude is within the interval [0 1], then the entire dataset is zero-val...
7 days ago | 0
Remake this without a loop
What's wrong with just using the test you're already doing? In the case you've given, the vector is unnecessary. A(A >= 1.5) =...
8 days ago | 1
Adding a row vector into the diagonal of another vector with m, n dimensions using for loop.
Actually, using a loop was pretty dang simple, now that I tried it. A = randi(9,5,10); b = 11:20; diagonalthing(A,b) dia...
9 days ago | 0
| accepted
How to get the centerline of a binary region
There's this. A = imread('arc.png')>128; B = bwmorph(A,'skel',inf); % skeletonize B = imfill(B,'holes'); % get rid of any...
9 days ago | 1
| accepted
how to remove [0,0,0] cell from an array
Consider: C = {rand(2,3) rand(3,3) rand(4,3) [0 0 0] rand(5,3)}.' iszerotuple = cell2mat(cellfun(@(x) isequal(x,[0 0 0]),C,'un...
9 days ago | 0
| accepted
grazing goat problem, how much of the area can the goat graze ?
Your answer is reasonable. As a point of verification: rf = 1; rg = 0.8; % intersection point locations % could also use ...
9 days ago | 0
How are the indices computed in gray2ind(...)?
Here's an example for a uint8 image: A = imread('cameraman.tif'); maplength = 32; [B bmap] = gray2ind(A,maplength); % as...
9 days ago | 0
| accepted
make a matrix out of list
It's not really clear if you want the contents of the file to be read into an array, or whether you just want a numeric (or othe...
10 days ago | 0
| accepted
Adding noise to image and removing it with average filter
The line mentioned in the error is certainly nonsensical, but afaik it shouldn't actually throw an error (at least in R2009b - R...
10 days ago | 1
Why isn't my matrix being filled?
When you define a function, you need to describe its input arguments and output arguments. This function definition has no in...
10 days ago | 0
Menu command list of colors converted to integers
I know this is part of the other question, but to clarify, the menu() command simply returns the index of the selected element w...
10 days ago | 0
Convert nested text cell array
I'm sure there's a simpler way, but idk. This will convert to a table. Note that the table columns are cell vectors. This i...
10 days ago | 0
| accepted
Loop iteration not working
Consider: x = 1:10 This expression by itself results in x being stored as a vector for y = 1:10 y end y In a loop sta...
10 days ago | 0
| accepted
No output from a for and elseif loop
That should be readlines(). P is a cell array of numeric vectors, so address it accordingly. Any assignment to J overwrites th...
11 days ago | 0
| accepted
Turning an entire script into a function
Try something like this. function [playerwon] = Battleship3(boardsize,numofguess,numships) % playerwon = Battleship3({boards...
11 days ago | 0
Taking a string input and transferring it to a integer
Meh. numbands = 4; colornames = {'black','brown','red','orange','yellow','green','blue','violet','gray','white','gold','silv...
11 days ago | 1
| accepted
Cropping images around the center of an image with a particular size
I don't know how you're getting that huge size. EDIT: I know why. I'll mention that at the end. The code will return a 225x22...
11 days ago | 0
| accepted
Remove a "plane" from my 3d plot
You could try to clip off the excess points with NaN and be left with a gap in the surface at the joint, or you could just avoid...
12 days ago | 2
| accepted
Error in array bounds
% ... % this loop has been simplified to the point that it works % for sx = 0.01:5 % s = [sx, 0, 0; % 0, sx, 0...
13 days ago | 0
