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Why do I receive license manager error 10?
A search of this forum should have turned up this official link: https://www.mathworks.com/matlabcentral/answers/93260-why-do-i...

más de 2 años hace | 0

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Defining boundaries of a curve
"what I'm trying to do is akin to density-based clustering" You might like to learn about dbscan help dbscan Wikipedia descri...

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Show boundingbox and label around segmented image
If C is your labeled image, untested code: props = regionprops(C, 'BoundingBox'); hold on; % Display all bounding boxes over ...

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How to plot these results?
Go here for plot options: https://www.mathworks.com/products/matlab/plot-gallery.html Pick one you like and adapt the sample c...

más de 2 años hace | 0

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How to resize imtool window?
Rather than keep resizing the imtool window as the user zooms in or out, why not just maximize the window at the very beginning ...

más de 2 años hace | 0

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bwlabel changes the number of pixels in blobs
Your image is not a binary image. It's an RGB image. bwlabel returns a labeled image as a double, not a binary image as you sh...

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how "atestinput" could be recogrnised in matlb and how it is calculated in testing of image clasification؟
MATLAB will automatically create/define variables using the class of the first thing assigned to them. By the way, I would not ...

más de 2 años hace | 0

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images issues on Ubuntu
Do what it says in the FAQ: https://matlab.fandom.com/wiki/FAQ#After_installation,_MATLAB_crashes_or_gives_an_error_message_whe...

más de 2 años hace | 0

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How do I zero out a frequency of an audio signal?
Did you try something like spectrum = fft(signal); spectrum(kt-200 : kt+200) = 0; denoisedSignal = ifft(spectrum); if kt is ...

más de 2 años hace | 0

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I get the error:index in position 1 is invalid. array indices must be positive integers or logical values
It's thoroughly discussed in the FAQ: https://matlab.fandom.com/wiki/FAQ#%22Subscript_indices_must_either_be_real_positive_inte...

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Fatal Startup Error on R2022b
Do exactly what it says in the FAQ: https://matlab.fandom.com/wiki/FAQ#After_installation,_MATLAB_crashes_or_gives_an_error_mes...

más de 2 años hace | 0

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Not Enough Input Arguements (Line 9)
You need to call your function's file importfile.m, not data.m. Then you need to call it like this: importfile('c:\mydata\what...

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Hello good... I would like to know how I can skip the comments header of a text file with data for a graph please :c
@Lya Lopez, You can use readmatrix with the NumHeaderLines option: data = readmatrix(filename, 'NumHeaderLines', 3); % Skip fir...

más de 2 años hace | 0

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How can I delete data from my table if two centroids from regionprops are the same?
Chances are low that you will ever have the same centroid location exactly, out to 16 decimal places. I suggest you use ismembe...

más de 2 años hace | 0

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Hello everyone How could I get a video of the following animation?
Use writeVideo. See attached examples where I change a plot/graph/surface plot and make a movie out of the individual frames. ...

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bwconncomp reports only one connected component when there are obviously many hundreds
There is just one connected, semi-porous blob as you can see from the screenshot below: s = load('imt2.mat') imt2 = s.imt2; p...

más de 2 años hace | 1

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How would I plot and connect two points properly?
Instead of those two plot calls, do it this way. x=1; y=3; a=2; b=1; plot([x, a], [y, b], 'm-d', 'LineWidth', 2, 'MarkerSiz...

más de 2 años hace | 1

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Plotting functions using subplot
% f(x) = 3 sin2 (x) + cos(x/2), x ∈ [−3, 6.5] % g(x, y) = x 4 − 8y 2 + x + 4, x, y ∈ [−5, 5] % r(φ) = 2 + cos(5φ), φ ∈ [0, 2...

más de 2 años hace | 0

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Determining Signal to Noise Ratio
You need to smooth the data somehow, like with movmean, movmedian, or sgolayfilt. Then once you have the "noise free signal, yo...

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How to code NESTED CYCLES
Check them in advance: if isempty(b) % What to do return; end if isempty(f) % What to do return; end fo...

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Problem with 'InsertShape'?
There is probably extra points in the outlines, "Points". If you had attached your data, we could have helped you.

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what item do I need?
Learn how to use App Designer: https://www.mathworks.com/products/matlab/app-designer.html

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Blue Channel Not Separating from Image
Your image is a gray scale image; it is NOT a RGB true color image. There is no blue channel. You can make your code more robu...

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Energy (uniformity) of an image
Depends on what you mean by energy. Pixel values are, for a reflective image like taken with a regular video camera, already in...

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How to zoom in to a particular point of an image?
Try changing the axis limit by calling xlim and ylim to be the ranges you want. help xlim

más de 2 años hace | 1

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dilate a shell while keeping openings
Not sure what the "problem" is. You didn't say. Yes, dilation will make gaps closer, of course. Do you not want the gaps to g...

casi 3 años hace | 0

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Is there something similar to polyval for circle fitting?
What's wrong with downloaded functions? I'm attaching one I use, along with a paper for more general purpose one.

casi 3 años hace | 0

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find what is the bounding box that encircles the whole objects as one unit?
No looping and using min() and max() needed. Just use bwconvhull and regionprops. Something like (untested): % Read the image...

casi 3 años hace | 0

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How do I determine the thickness of the ice at the leading edge of the airfoil from the image?
Subtract the first image from the icy image using imabsdiff. Then call bwareaopen to throw out blobs too small to consider. Th...

casi 3 años hace | 0

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collect all same coins in each figure
This is just what my tutorial does. See my Image Segmentation Tutorial in my File Exchange: Image Analyst's File Exchange It'...

casi 3 años hace | 0