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Question

Application of multistage decimator filter to signal

Dear all We had a piece of code to decimate data (decimation ratio (dec_factor) > 13) that read: Hfd=fdesign.decimator(dec_fa...

8 months ago | 2 answers | 0

### 2

answersQuestion

Concatenating a signal given its segments' limits

Hello there: I have this vector (a small sample) : ww = 10 15 16 22 33 44 45 50 51 6...

11 months ago | 1 answer | 0

### 1

answerQuestion

Simulink program memory usage when converted to Android

Hi there We have a Simulink model to process time series sampled at fs= 4Hz. Is working fine in Simulink. We would like to e...

2 years ago | 0 answers | 0

### 0

answersQuestion

Converting Neural Network Model file from Python to Matlab

Dear all We have developed a CNN model in Python and would like to convert the model to Matlab. We have exported the Python mo...

3 years ago | 1 answer | 0

### 1

answerQuestion

How to count the number of different strings in a string list?

Dear All I would need some help on this: I have the following string list: AAA ABB CDE ABB CCR AAA FDR I would need to...

4 years ago | 1 answer | 0

### 1

answerQuestion

How to assign NaN to consecutive elements of a vector, in intervals defined by a matrix

Hello there! supose we have a vector x=1:12 and we have a controling matrix as this: z=[2 4; 6 8; 10 11] We want to assi...

4 years ago | 1 answer | 0

### 1

answerQuestion

Converting a matrix of strings to a txt file

Hi there! I have a mtarix of strings x_mtarix: x_matrix = 5×3 string array "A" "B" "C" "AA" "B...

4 years ago | 1 answer | 0

### 1

answerQuestion

Converting mat files to daq format

Hello There We would like to convert mat files, or indeed matlab variables in the workspace, to the daq format. what we are l...

4 years ago | 1 answer | 0

### 1

answerDetecting values in a vector that are different but very close to each other

Thakn you for your reply. Yes I want to keep the 4.1 since the next valu is 5 so, 5-4.1=0.9 which is over 0.1

5 years ago | 0

Question

Detecting values in a vector that are different but very close to each other

Hello there: I have a t vector (time, increasing values) like this: t=[ 1 1.1 2 3 3.1 4.1 5 6 7....

5 years ago | 3 answers | 0

### 3

answersQuestion

File disappeared from the current working matlab folder

Hi there I was testing a matlab function in the current working folder (not a matlab program folder) and suddenly the file was ...

5 years ago | 0 answers | 0

### 0

answersQuestion

How to delete items entries in a listbox in appdesigner

We have a listbox with multiple entries, and would want to be able to remove selected entries, for which we though we could use...

5 years ago | 0 answers | 0

### 0

answersUsing WindowButtonDownFcn in App Designer

Hi I cannot find the "WindowButtonDownFcn" upon on doing the callback, in my case, this is a callback for a listbox ui (inherit...

5 years ago | 0

Question

Real and Imaginary part of this function please

Hi there, I have this expression: syms R C w a real assume(R>0) assume(C>0) assume(w>0) assume(a>0) z=R/(1+(R*C)*(i*w)^a...

5 years ago | 1 answer | 0

### 1

answerQuestion

Error using load: Cannot read file: inconsistent error message

I have saved mat files using the '-v7.3' like save('my_big_fat_file, 'TT_abc', '-v7.3'); my_big_fat_file has has about 3 GBy...

5 years ago | 0 answers | 0

### 0

answersQuestion

Sorting a cell of strings using a certain character position

Dear all I have a variable called var= vart=[{'Ice011_L_3of3m.mat''}; {'Ice011_P_1of3m.mat'} ;{'Ice011_P_2of3m.mat'}] We woul...

5 years ago | 1 answer | 0

### 1

answergrouping first (left column) and last (right column) of consecutive sequence of a Nx2 matrix

Many thanks it worked perfectely!! Best Regards

6 years ago | 0

Question

grouping first (left column) and last (right column) of consecutive sequence of a Nx2 matrix

Hi there We have a Nx2 matrix with pieces of consecutive values that we want to obtain the extreme left and right limits: A=[...

6 years ago | 2 answers | 0

### 2

answersQuestion

load being 3x faster than importdata

We want to load big mat files (about 4gb) tried: tic; ee1=load('my_big_fat_file.mat'); t1=toc t1=81.3492 tic; ee2=im...

6 years ago | 1 answer | 0

### 1

answerQuestion

I have a two column matrix and want to eliminate the rows whose interval contain a certain value

Dear all I have a two column matrix such as: A=[12 44; 56 78; 81 100; 110 200; 210 300;450 500; 600 710] this matrix row...

6 years ago | 1 answer | 0

### 1

answerReading variables from a big matlab Table

Guillaume, thank you I have gone through all the steps you mentioned. Creating the tall data was time consuming t_tall=tall(...

6 years ago | 0

Question

Reading variables from a big matlab Table

Hello There we have about 45 big matlab Tables (average size 12 GByte each). Please note that thee are .mat files. We will be r...

6 years ago | 2 answers | 0

### 2

answersTell me this is not true: r2016b and CWT (continuos wavelet transform)

I know these things are quite subjective sometimes. But the concept of period (T) or frequency (F=1/T) of a periodic waveform i...

8 years ago | 0

Tell me this is not true: r2016b and CWT (continuos wavelet transform)

Dear Wayne Thank you for your reply, we always learn something from it. The wavelet area is quite demanding in many ways and th...

8 years ago | 0

Question

Tell me this is not true: r2016b and CWT (continuos wavelet transform)

I was checking out the mathworks site for the new version of the CWT function http://www.mathworks.com/help/wavelet/ref/cwt.ht...

8 years ago | 5 answers | 1

### 5

answersQuestion

assigning a color to the same value when ploting multiple matrices

Hello There I am using imagesc to plot data sets of 16 matrices sized 256x1000 samples .each (data for one patient) I am usin...

9 years ago | 1 answer | 0

### 1

answerQuestion

Applying a multistage filter to a signal, how?

Dear Readers Considering the filter explained in the mathworks documentation centre: Fpass = 0.11; Fstop = 0.12; Apass =...

10 years ago | 0 answers | 0

### 0

answersusing conofinf to plot the cone of influence in a imagesc(time, freq, coeffs)

Anybody please?

10 years ago | 0

Question

marginals and energy of the scalogram to match the signal

Hi there: I have been looking for some matlab code to compute the time and frequency marginals in the wavelet scalogram. Mor...

11 years ago | 0 answers | 0