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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...
9 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...
1 year 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...
5 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...
5 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...
6 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?
11 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