Community Profile DGM

Last seen: Today Active since 2015

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.

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I have created an algorithm for a median RGB image filter, however, it doesn't seem to be working.
I don't know why you're using a weighting array that doesn't exist, but since you say this is a median filter, I'm going to assu...

18 hours ago | 0

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How to divide a sequence into 8 groups?
I am going to assume that your "data" is a long character vector with no delimiters. v = char(randi([48 57],1,64)) % example ve...

19 hours ago | 0

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Why am i getting two different MSE, while using formula and syntax immse?
The reason is that the two images are integer-class. The difference and square may result in data truncation. moving_img = imr...

21 hours ago | 1

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Hide RGB image in gray scale image using LSB Replacement
Here. You either need a much larger host image, or you need to reduce the payload size. The payload can be reduced by reducing...

23 hours ago | 0

how to make my graph in center without moving it or dragging it to the center
There's no need for all this code repetition. The cases should not be nested. Create the unmodified vectors, create the modifie...

1 day ago | 0

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Frosty Filter: To create effect like frosted glass
There isn't really a tool made for this within IPT or base MATLAB. You can certainly roll your own, or you could write a small ...

3 days ago | 1

plotting x y cartesian coordinates
This isn't the core of the problem, but the way you wrote the x and y vectors causes them to be stored as 4x3 matrices. When yo...

3 days ago | 0

Is applying a binary operator (+,-,*,/) to char arrays supported by MATLAB or just a "trick"
MATLAB is a weakly-typed language; consequently, implicit type conversions tend to happen all the time. I don't know where (or ...

3 days ago | 0

How to go back to the input in a if?
This is a start %M=Righe della matrice A m = 4; %N=Colonne della matrice A nrange = [3 13]; % pull parameters out for fle...

3 days ago | 0

How to detect percentage of a color range inside an Image?
Something like this: A = imread('coloredChips.png'); % i just grabbed a picture that had some greens imshow(A) minvalue =...

4 days ago | 0

Mean filter with kernel size
This is a routine uni project. There are a lot of existing examples on the forum. Assuming the filter kernel is rectangular ...

4 days ago | 0

Highest value number in a repeating array of ascending numbers
If those simple rules can be depended upon, then A = [1;2;3;1;2;3;4;5;1;2;3;4;5;6;1;2]; seqpeaks = A(circshift(A==1,-1))

4 days ago | 2

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To save an image using imwrite
You'll need to decide whether you want to scale the data. Toward that end, you'll probably need to decide whether these images ...

4 days ago | 1

"Index in position 2 is invalid. Array indices must be positive integers or logical values" when performing a for loop
MATLAB uses 1-based indexing, so UI(j,0) isn't a valid index. You can just use 1 for the first column. The loop isn't really...

4 days ago | 0

Plot from a result obtained in local functions
Just get the vector returned by each of the local functions when you call them. Then you can plot them. Pmax_1 = max_press1(W1...

4 days ago | 0

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Plot has wrong x-values
The values are not wrong. There are just few values, so the lines connecting the points make the appearance of nonzero data whe...

4 days ago | 0

Cell Array Reshape Operation
There are probably other ways, but... % a patterned test array A = repmat({(1:16).', (17:32).'; (33:48).', (49:64).'},5,5) ...

5 days ago | 1

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corners of rectangle by center point
You mean basic addition and subtraction? c = [-9.9366 1.6890 1.3800]; w = [0 1.7 0.3]; v = c + w/2.*[0 -1 -1; 0 1 -1; 0 1 1...

5 days ago | 0

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Why does this algorithm yield an 'incorrect' result?
This is a consequence of accumulating the small errors inherent to floating-point representations of numbers. A = 0.2; S = 0; ...

5 days ago | 1

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Elementwise indexing of a vector by a multidimentional array
I have no idea what's ideal for gpuArray, but this is how it would be done with linear indexing. T = 11:20; % a vector A = ran...

5 days ago | 0

How do I change the color distribution in contourf?
This probably isn't exactly what you want, but I think that an inpainting+marker approach would be visually misleading. In this...

5 days ago | 0

Height of a figure spontaneously changes.
It's seems like the figure properties aren't updated immediately. You're reading the properties before they're ready and then t...

6 days ago | 1

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bin2gary: Conversion to char from logical is not possible
The output of dec2bin() is a character array. If you want to do logical operations on it, you have to convert it first. x = ...

7 days ago | 1

I have 2d images in JPEG format created by matlab program and I want to convert them into .STL files using matlab code
Well, here's a half-baked answer, but anyone is free to do better. I just grabbed this mesh tool from the FEX and gutted it to ...

7 days ago | 1

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find out char in cell array
If all you're trying to do is get a logical indicator of which char arrays in a cell array start with a particular character, yo...

8 days ago | 0

how can i use my function directly on a array without having x and y?
You don't need to specify x and y when calling imagesc(). If you handle the input arguments like this: A = imread('cameraman...

9 days ago | 1

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Match real X, Y, Z, positions with calculated positions
This is a generalized example of finding and evaluating distances. I'm assuming here that simple euclidean distance is an appro...

10 days ago | 0

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How do i change color in a 3d animated plot over time?
Use hold and only draw one segment at a time. Note that for N points, there are N-1 segments, hence the length of the color tab...

10 days ago | 0

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