Constantino Carlos Reyes-Aldasoro

Last seen: 19 days ago

City, University of London

128 total contributions since 2016

Senior Lecturer in Biomedical Image Analysis at City, University of London. Huge Matlab fan, wrote the book "Biomedical Image Analysis Recipes in MATLAB: For Life Scientists and Engineers" published by Wiley-Blackwell.

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Answered
Plot {(x,y,z)| x²+y²<1, 0<z<x+2}
It depends on what you want. One way to code this would be to define your space, i.e. the range of each of each variable, say x ...

19 days ago | 0

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How can I get rid of the gap on the x-axis?
How about axis tight would that work?

27 days ago | 0

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How to put separate titles above multiple pcolor subplots
The issue is that you are setting the axis to off with this set(gca,'visible','off'); Your problem will be solved if you use ...

27 days ago | 0

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Help with an ECG signal
Please read the following live script, it describes several of the issues you raised: https://uk.mathworks.com/matlabcentral/...

1 month ago | 0

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How can I turn the following matrix into an image?
Well, an image of 16 rows, 16 columns would have 256 pixels. That would be the first consideration, after running your code you...

1 month ago | 1

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How to make '.' Markers transparent in a Scatter plot?
Hello Just tested this in R2019a and it works as for you, I have not yet upgraded to 2020. Just an idea, try to grab the hand...

1 month ago | 0

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How create desired number of images in the folder
Hello First of all, if you have folders you better define these: baseDir = pwd; that is the base folder or directory, then ...

2 months ago | 0

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Answered
Find matching rows based on specific column values
This is rather easy if you know how to address matrices properly. Take your matrix: >> a=[1 2 5 4 5 7 1 2 9 6 3 2 4 5 1 7 ...

3 months ago | 0

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Answered
Create boxplots from multistructure cell
Have you considered using 3D boxplots? Have a look here: https://uk.mathworks.com/matlabcentral/fileexchange/68006-boxplot3d...

3 months ago | 0

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What are the code that i should use ??
This sounds like homework. If you want some help you would need to make some effort and start your own code and ask questions if...

3 months ago | 0

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How can I import Matlab data to XML file ?
Have a look here https://uk.mathworks.com/help/matlab/import_export/exporting-to-xml-documents.html https://uk.mathworks.com...

3 months ago | 0

Answered
How can i synthesis an ECG signal using Matlab
Please visit the following functions in Matlab File Exchange: https://uk.mathworks.com/matlabcentral/fileexchange/68246-visua...

3 months ago | 0

Answered
how to fuzzify the pixel intensity of an image
I think that what you are referring to as "fuzzifying" is better described as randomness or adding noise. What you can do is sim...

3 months ago | 0

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RGB and LAB values
RGB, LAB, HSV and many others are colour spaces, that is how to create colours that resemble what natural colours are, see for i...

3 months ago | 0

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Answered
Plotting 1000 signals into one graph
First of all: for (i=1,i<=1000, i++), This is not Matlab, looks like java, in Matlab it would be for i=1:1000 ...

4 months ago | 1

Answered
Filling a Vector with Find Function
This line does not look like Matlab syntax, it looks more like a python loop x [x, find(Call == Win(i,j))]; I would suggest th...

4 months ago | 0

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Answered
How to subplot figures reopened from .fig files correctly when they containing images?
What you have to do is to grab each element by its handles, to grab the handles of a figure you use >> h0=gcf; then you can ac...

5 months ago | 0

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Conv() not working
Could it be that you tried with uppercase C as in Conv and not with lower case as in conv? >> conv([1 1],[2 2]) ans = ...

5 months ago | 1

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I want to generate spherical from three given arrays, please help me out.
We would need a better explanation of exactly what you want, but I think that the main issues are: 1) you are using sph2cart ins...

6 months ago | 0

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a MATLAB function that calculates area of segmented thermal image
Hello This may be possible but cannot help without looking at the image and the area to be segmented.

6 months ago | 0

Answered
How to include a vertical scale besides of a polar plot ?
This is easy, but you need to use handles if you want the figure to look like the one you show. And also, you have to think of t...

7 months ago | 0

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Answered
How to create empty XYZ image matrix
In addition to the above, you can also consider zeros emptyMatrix = zeros(x,y,z); And then you can add values into that ma...

7 months ago | 0

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growing bubbles with a predetermined radius in a given volume?
There is too little information to answer this question properly. Do you mean non-overlapping bubbles? and that they contact eac...

7 months ago | 0

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How to split a 3d matrix into sub-3d matrices?
There is not enough information to be certain about your question, but by addressing your matrices you can create submatrices li...

7 months ago | 0

Answered
Image shows with imshowpair, but not with imshow
You have two options, use subplots subplot(121) imagesc(midAirImage) subplot(122) imagesc( bwImage) Alternatively you can...

7 months ago | 0

Submitted

Cell Migration in Scratch Wound Assays
Analyse and measure migration in Scratch Wound Assays

8 months ago | 1 download |

Answered
Methods for analysis of plots in image processing
This seems rather simple. First, project your data to a single dimension, say your image is called data_2D, data_1D = sum(dat...

8 months ago | 0

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Answered
how to remove spot from an image.?
You should look for the extreme values of the intensities. The dark regions of the image are not as dark as the circle, so find ...

8 months ago | 0

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Multiple contour plots with one colorbar
Hello I think you have asked a similar question, or at least the answer is similar and it is to use the handles of each element...

9 months ago | 0

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Answered
Segmentatio of ecg signal
Hello As mentioned previously, it is not possible to answer without more knowledge of the case itself. But I can point you to t...

10 months ago | 0