Manny Kins

Last seen: etwa 3 Jahre vor | Aktiv seit 2018

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Filling a region of a grayscale image with a colour corresponding to colorbar
Hi all, I have a task in which I want to draw around certain areas of an image and fill those areas with a semi-transparent colo...

fast 4 Jahre vor | 1 Antwort | 0

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Mapping two sets of co-ordinates with two different colours onto blank white screen
Hi, I have a blank Screen with dimensions: Screen = 255*ones(1024,1280,3); Where 1024 and 1280 are the height and width and 3 ...

fast 4 Jahre vor | 1 Antwort | 0

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Frage

Finding intensity of region inside a circle from image
Hi all, I have this image below of a circular bead (also attached): I would like to calculate the average intensity of all p...

fast 4 Jahre vor | 1 Antwort | 0

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Finding the full width half maximum (FWHM) of a rounded part of peak instead of sharp peaks
Hi, I have this plot where I want to find the FWHM around the main "bulge" of the plot (around the red line I have crudely dra...

fast 4 Jahre vor | 1 Antwort | 0

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Plotting colourful line over gray image whilst retaining colourbar information
Hi, I would like to plot a colourful trajectory on top of a grayscale image whilst retaining the colour information of the traje...

etwa 4 Jahre vor | 1 Antwort | 0

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Frage

Curve fitting with loglog data
I am having some issues fitting a curve using polyfit to log data. I think I am making a silly mistake during the fit plotting a...

etwa 4 Jahre vor | 1 Antwort | 0

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Removing data from a structure that is less than a certain threshold
I am running a code to find the positions and trajectories of microparticles. I get a lot of noise as my particle concentration ...

mehr als 6 Jahre vor | 2 Antworten | 0

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Frage

Finding length of a struct, excluding NaN values
I have a struct with the following layout: T X Y [0,1] [0, 1] [0,5] [0] [2] [2] NaN NaN NaN NaN NaN NaN N...

mehr als 6 Jahre vor | 1 Antwort | 0

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Frage

Help optimising code that creates linked particle trajectories from single particle positions in each frame
The code below takes particle positions that I have found in each frame of a video and compares nearest neighbours to build part...

mehr als 6 Jahre vor | 1 Antwort | 0

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Frage

What are the thought processes that go on when you are trying to solve a MATLAB problem?
I am (fairly) new to MATLAB, just started using it more heavily these past few months (before then I just used it to make basic ...

mehr als 6 Jahre vor | 1 Antwort | 0

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Frage

Removing NaNs from a struct
I have a struct with the following layout: T X Y [0,1] [0, 1] [0,5] [0] [2] [2] NaN NaN NaN NaN NaN NaN N...

mehr als 6 Jahre vor | 3 Antworten | 0

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Making a video showing trajectories of particles
I have some X, Y and T (time) co-ordinates for my particles (attached) and I want to plot and make a video of all of my particle...

mehr als 6 Jahre vor | 2 Antworten | 0

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Frage

Removing unique numbers whilst comparing two structures
I have two structs, one called AllPositions_CA with X and Y fields containing this type of layout: X ...

mehr als 6 Jahre vor | 1 Antwort | 0

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Finding circles in clusters
I have this image of spherical particles with varying shades. I wanted to find a way to find the centers of all of them (es...

mehr als 6 Jahre vor | 1 Antwort | 0

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Frage

Finding arrays above threshold value
I have a struct AT.AX AX has the following values: 1x370 double 1x1007 double 1x3957 double 1x6309 double 1x1648 double ...

mehr als 6 Jahre vor | 2 Antworten | 0

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Frage

How do I remove NaN values from a matrix and retain matrix shape?
Say for example I have the following array X = [1 3 4; 5 6 8; NaN NaN NaN] X = 1 3 4 5 6 8 ...

mehr als 6 Jahre vor | 2 Antworten | 0

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