# 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**

Output argument not assigned on some execution paths

The problem occurs in these two cases: if N_Start_Freq<0 sprintf('%s','raise up f') return end if N_Stop_Freq>fs/2...

ongeveer 5 uur ago | 0

for loop with three variables in 3d matrix

Try RH_ = 50 + 50*rand(100,4,3) % example data RH_excess_days = squeeze(sum(RH_ > 99,1))/24

ongeveer 7 uur ago | 0

Customizing the color channels for fusing two images in

This is a basic image blending operation. As such, I am going to elect to do this with MIMT tools instead of native MATLAB/IPT....

ongeveer 7 uur ago | 0

| accepted

understanding an if statement

This isn't very clear usage and looks like invalid syntax at first glance. It would help to know what the surrounding code look...

ongeveer 8 uur ago | 0

I am trying to the row number of '3/8' in a column of text data (52x1) n

Tube_data = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/780803/Copper%20Tubes.xls'); Column_1 = T...

ongeveer 24 uur ago | 0

when i run the program, the line (202 column 1) is misplaced or improperly nested, why ?

That if/else structure is messed up and preventing ML from finding the end of the prior function scope. % "elseif" instead of...

ongeveer 24 uur ago | 0

adding 2D array to 3D array

An example: A = randi(100,3,1,4) B = A(:,:,[1 1:end]) Alternatively, you can do the concatenation just using cat() C = cat(3...

1 dag ago | 0

| accepted

adjust brightness of image

Consider the following examples. Note the changes to the image, the changes to the transfer function shape and endpoint locatio...

1 dag ago | 1

| accepted

I am trying to use imshow to take data in a .txt file and print out the image made from the data.

I'm going to guess that this is the same homework assignment. If not, similar operations should apply. The example only shows ...

2 dagen ago | 1

| accepted

Create image from pixels using two vectors and their grayscale value

I'm pretty sure there are other ways to do this, but here's one way. % build example image and position data A = imread('coi...

2 dagen ago | 1

| accepted

Mean squared error and NMSE

The title is about NMSE, but there's no mention of it. I'll refer to both. How to back calculate the reference from an estim...

2 dagen ago | 0

rgb2gray by 5*5 vicinity marix

Errors aside, this doesn't even look complete. [filename, pathname]=uigetfile('*.*','Select the image file'); Address=strcat(p...

2 dagen ago | 0

Insert and write row with condition

I'm sure there are other ways, but here's one example. % create test array nb = 4; sb = 4; A = [rand(nb*sb,2)*1000 rand(nb*s...

2 dagen ago | 1

| accepted

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...

3 dagen 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...

5 dagen 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...

5 dagen 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...

5 dagen 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...

6 dagen 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...

7 dagen 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...

9 dagen ago | 0

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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...

9 dagen 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...

9 dagen 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...

9 dagen 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)

9 dagen ago | 0

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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...

10 dagen 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) =...

11 dagen 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...

11 dagen 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...

11 dagen 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...

11 dagen 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 ...

12 dagen ago | 0