# Ricardo Duarte

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**Content Feed**

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Finding a specific pattern in data

Hello all, I would like to create a routine to identity if a specifi pattern exists in may data. So far I did this: data=some...

5 months ago | 1 answer | 0

### 1

answerQuestion

How to know the size of a matrix inside a for loop

Hello, I would like to know the size of a group of matrices in a for loop. I tried this size(strcat('MediaOfDay_',sprintf('...

5 months ago | 1 answer | 0

### 1

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How to select specific files from a list

Dear all, I have a list of wav files like this: DATA_063901 DATA_064201 DATA_064501 DATA_064801 DATA_065101 . . . DATA...

6 months ago | 1 answer | 0

### 1

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How to draw a rectangle around the area that shows an energy variation

Hello all, I have several wav files and I want to draw a rectangle around the area here a specific energy variation happend. Le...

6 months ago | 3 answers | 0

### 3

answersQuestion

Remove noise from an audio file

Hello all, I would like to remove noise from an audio file containing a biological vocalization. How can I remove only noise w...

6 months ago | 1 answer | 0

### 1

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xticklabel in the midle of the spectrogram

Hello all, I have several .wav files with 3minutes each that I used to compute a spectrogram. Now I want to put the name of ea...

6 months ago | 1 answer | 0

### 1

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How can I extract data (CData) from a figure

Hello, I want to extract data from a .fig. In reality I want the XData, YData and CData Thank you in advance.

9 months ago | 1 answer | 0

### 1

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Calculate and plot a cdf or pdf functions for 3D matrices?

Hello all, I would like to know how I can calculate the cumulative distribution function (cdf) or probability distribution func...

10 months ago | 1 answer | 0

### 1

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How to read all variables in netcdf file

Dear all, I have a netcdf file with 705 variables inside. The names of the variables in the netcdf are something like this: 2...

10 months ago | 1 answer | 0

### 1

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Plot CDF or PDF to compare matrices

Hello everyone, I'm looking for some recomendation regarding the best way to plot my data. I have several a matricis (size 307...

10 months ago | 2 answers | 0

### 2

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How to see if a .WAV file is saturated?

Hello everyone, I have a .wav file that I want to see if its signal is saturated or not. In case it is saturated I would like ...

11 months ago | 1 answer | 0

### 1

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Calculate distance resulting from an histogram and a specific point

Dear all, I have two matrices that represent longitude and latitude. With those matrices I calculated an histogram and now I w...

1 year ago | 1 answer | 0

### 1

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Choose the ideal number of bins in hist3

Dear all, I want to plot a hist3 plot but i'm not sure which is the ideal number of bins that I would need to define. I have ...

1 year ago | 1 answer | 0

### 1

answerQuestion

Data points in an imaginary grid cell

Dear all, I have a list of data points in two dimensions that correspond to the coordinates (longitude and latitude) of my vess...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to import and read several large csv in matlab

Dear all, I have a huge amont of large csv files (about 170Mb each). I need to open them and use the information in two of the...

2 years ago | 1 answer | 0

### 1

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How to convert R code in Matlab

Dear all, I have a extense R code which I would like to convert it to Matlab. Is there any way to do this, a sort of automatic...

2 years ago | 1 answer | 0

### 1

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How to align the center of mass of two density functions?

Dear all, I have two density functions which I would like to align their x-axis. I was thinking to align then using the baryce...

2 years ago | 1 answer | 0

### 1

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How to calculate probabilities using Bayesian theorem

Dear all, I would like to calculate the probability of A, given B (p(a|b)) which can be done through the Bayesian theorem: p(a|...

2 years ago | 1 answer | 0

### 1

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Plotting a %of time vs %of area graph

Dear all, I strugglIeling with this problem for a while already. I have the matrix A(1000x1000x120) which represents noise leve...

2 years ago | 1 answer | 0

### 1

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How to create a %of time vs %of area plot

Dear all, I have the matrix A(1000x1000x120) which represents noise levels arranged as (longitude x latitude x time). I want n...

2 years ago | 1 answer | 0

### 1

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Misalignment plot with several axes

Dear all, I have the following code that gives me a group of subplots. for k = 1:N CellSELpercentil{...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to generate a signal

Dear all, I want to generate a signal similar to the one in the following picture (black line only). How can I do that. I...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to obtain the channel impulse response through sound pressure levels

Dear all, I would like to obtain the channel impulse response through the sound pressure level. How can I do that? Is there a...

2 years ago | 0 answers | 0

### 0

answersQuestion

Meaning of a code line

Dear all, I have an old piece of code that I'm trying to understand. The line that is confusing me is: eval( [ '!copy ' fi...

2 years ago | 1 answer | 0

### 1

answerQuestion

Replace value that are associated to a location by nan

Dear all, I have a question that I hope you can help me. I have a map of sound pressure levels (spl) in which I patched a whi...

2 years ago | 1 answer | 0

### 1

answerQuestion

Changing the coordinate system from WGS84 to matlab coordinate system

Dear all, I have a ".nc" file (attached) containing the dolphin dispersion in one specific area which was imported from ARCGIS ...

2 years ago | 0 answers | 0

### 0

answersQuestion

How to change the colorbar limits in a previously saved fig file

Hello, I have a figure containing a colorbar that I saved in a .fig format. Now I need to open it and change the limits of the...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to increase the performance of a cycle for in its use in large matrices?

Dear all, I have four matrices NewZ(1x20), Longitude(1000x1), Latitude(1000x1) and depthgrid(1000x1000). Note that depthgrid re...

2 years ago | 1 answer | 0

### 1

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How to assign a specific values to the nearest X,Y point

Dear all, I have two vectors X and Y which represents the vertices of a delauny triangulation. Additionally I have two other v...

2 years ago | 1 answer | 0

### 1

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Interpolation of layers to obtain a layer in the orthogonal plan

Dear all, I have three variables S1, S2 and S3 with the size (1000x1000) all that represent the sound levels in three differen...

2 years ago | 1 answer | 0