# Constantino Carlos Reyes-Aldasoro

### City, University of London

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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**Content Feed**

I need to find the phase of the images.

Hello The image that you show could be that of a phase, but it is hard to judge from what you are showing. In any case, here is...

4 días ago | 0

unshow unnecessary intervalls in a histogramm

Hello: What you need to do is rather simple if you capture the values of your histogram, instead of using hist to display dir...

4 días ago | 0

Mean computaion in matlab

If your data is in a matrix of dimensions [samples x 3], e.g. data=[lon1 lat1 value1; lon2 lat2 value2; lon3 lat3 value3; ...

4 días ago | 0

| accepted

convolution of 2 signals

You are confusing functions. conv is used to obtain the convolution, subplot is used to divide a figure and then plot inside eac...

13 días ago | 0

Compute convolution y[n]=x[n]*h[n]: x[n]={2,0,1,-1,3}; h[n]={1,2,0,1}

What exactly is your question?

13 días ago | 0

How can I extract the GLCM features from each nucleus of mircroscope blood smear image?

One way to do this would be to crop each region, once you have found each object, you can use regionprops to determine the extre...

27 días ago | 0

How to Loop to plot histogram and line plot?

The following is not clear and most probably your error: for i=4:8;k=1:2 subplot(1,2,k) plot(Temp(:,3),Temp(:...

alrededor de 2 meses ago | 0

fprintf or fwrite non ASCII characters

Have you tried using TeX formatting? I.e. \alpha \sigma \mu https://uk.mathworks.com/help/matlab/creating_plots/greek-letters...

alrededor de 2 meses ago | 0

Labelling of x axis

There are 2 ways to solve this: First is to plot in the actual hours instead of the points of the matrix that is holding th...

alrededor de 2 meses ago | 0

| accepted

how to change the plot background?

Most probably the first figure you are showing is and RGB (type "whos" and look for the dimensions it should be rows x columns x...

3 meses ago | 0

Plotting Several 2D Spatial Cross-section Data in 3D (GPR Data)

In terms of functions you can use mesh, surf, isosurface, isocaps and others. But what is more important is what you are trying ...

3 meses ago | 0

How to make a bar graph using user input values

Several errors, First, clear your figure every time you play otherwise they will overlap (use clf). Second, you are always...

3 meses ago | 0

| accepted

how to change the type of binarize threshold

I agree with the previous comments, the first T is not a table. So two comments 1) do not use T for a value first and then fo...

3 meses ago | 1

| accepted

¿Porque no corre mi código? No aparece nada

Hola, Primero unas recomendaciones: 1) te recomiendo escribir en ingles porque en espan~ol es mas dificil tener ayuda 2) te r...

3 meses ago | 0

title according to the file name

Perhaps you want to add values to the titles of your figures, try something like this for k=1:9 subplot(3,3,k) title(...

3 meses ago | 1

| accepted

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 ...

6 meses ago | 0

How can I get rid of the gap on the x-axis?

How about axis tight would that work?

6 meses ago | 0

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 ...

6 meses ago | 0

| accepted

Help with an ECG signal

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

6 meses ago | 1

| accepted

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...

6 meses ago | 1

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...

6 meses ago | 0

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 ...

7 meses ago | 0

| accepted

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 ...

8 meses ago | 1

| accepted

Create boxplots from multistructure cell

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

8 meses ago | 0

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...

8 meses ago | 0

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...

8 meses ago | 0

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...

8 meses ago | 0

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...

8 meses ago | 0

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...

8 meses ago | 0

| accepted