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**Content Feed**

Question

How do i count same consecutive occurrences

Consider I have an array of occurrences A=[1,1,1,1,1,2,2,2,2,3,3,3,3,2,2,2,1,1,1,1] I want to find out how many 2 ar...

4 years ago | 3 answers | 1

### 3

answersQuestion

Select the same number of samples from each class.

Say I have a table with 2 columns, one column stores the value the other the class of the value. The classes are imbalanced. I w...

4 years ago | 1 answer | 0

### 1

answerQuestion

Read a nested json file.

I have a nested json file with lines of this type: {"results":{"whatever_name":{"id":77},"another_name":{"id":89},"another_...

4 years ago | 1 answer | 0

### 1

answerQuestion

how to concatenate tables stored in a structure

I have a structure where tables with same variable names are stored. I want to concatenate all these tables in one big table. ...

4 years ago | 3 answers | 0

### 3

answersQuestion

nearestNeighbour Undefined function or variable 'nearestNeighbor'

I want to use this method nearestNeighbour but Mathlab cannot find it. i can complete the name of the method by hitting tab whe...

6 years ago | 1 answer | 0

### 1

answerQuestion

How to plot over a home blueprint?

Hello researchers, I stumbled upon a visualization problem. Let say i want to plot the indoor navigation coordinates over my...

6 years ago | 0 answers | 0

### 0

answersQuestion

Interpolating data based on the time segments.

Hello everybody, I have a time series with the average sample 1 second but samples some time delay more or less than that. I...

7 years ago | 1 answer | 0

### 1

answerQuestion

How can be a buffered signal reconstructed?

I have a signal which i buffered with 2/3 overlap. Now i want to rebuild the buffered signal, but i don't know how to do it. T...

8 years ago | 1 answer | 0

### 1

answerQuestion

what is called half width at full height amplitude ratio.

I' doing some signal processing, and noticed that when i find a peak i can use the ratio of peak width at full height and the am...

8 years ago | 0 answers | 0

### 0

answersQuestion

How to read part of folder

I have my data saved into folders based on time of creation. the structure is like this: folder: 05_dec._2014_08-15-03.33...

8 years ago | 2 answers | 0

### 2

answersQuestion

Cannot read video Matlab 2014b Linux!

I am trying to read a h264 video in Matlab Ubuntu 14.10 using VideoReader, and i get an error. "Could not read file due to ...

8 years ago | 2 answers | 0

### 2

answersQuestion

Findpeaks from signal processing toolbox does not work.

I'm stuck into this problem. I need to use the findpeaks from <http://nl.mathworks.com/help/signal/ref/findpeaks.html Signal Pro...

8 years ago | 1 answer | 0

### 1

answerQuestion

How to append points to kml file

Hi, i'm trying to append points to a kml file but it seems impossible to do so. do you know a way to do that in a simple way in...

8 years ago | 0 answers | 1

### 0

answersQuestion

Iterate through matrix until no more possible calculations.

I have an array that shortens up every time i do an iteration. But how do i know when there are no more possible calculations t...

8 years ago | 1 answer | 0

### 1

answerQuestion

how to remove rows from an array containig elements from another array

Suppose i have a matrix of a=[1,2; 1,3; 1,4; 2,12; 2,15; 5,7; 5,8; 6,98; 6...

8 years ago | 1 answer | 0

### 1

answerQuestion

How to create an array out of a matrix based on criteria.

Suppose i have a matrix of a=[1,2; 1,3; 1,4; 2,12; 2,15; 5,7; 5,8; 6,98; ...

8 years ago | 1 answer | 0

### 1

answerQuestion

Clustering GPS points based on distance between points?

Hello everyone! Can some one of you how can i cluster GPS points. Let say i have a ploted on a map some GPS points and i wan...

8 years ago | 2 answers | 0

### 2

answersQuestion

Have to spit gps distance into equal segments

I have gps readings with 1Hz sampling also accelerometer readings with 93Hz sampling. using the pos2dist i got the distance bet...

8 years ago | 0 answers | 0

### 0

answersQuestion

how remove tow of three consecutive same values in a vector

I have two vectors like this a=[1,2,3,1,1,1,2,3,2,3,1,1,1,1,2,3,3,3,2,2,1], where * _b_ * is id of * _a_ * b=[1,2,3...

9 years ago | 2 answers | 0

### 2

answersQuestion

Cell array, getting the columns that have non empty cells in the middle of the column

Hi every body. I have a cell array m|x|n , this array is created using a buffer function with an overlap. So i have a 1 dimensi...

9 years ago | 0 answers | 0

### 0

answersQuestion

how to get all the windows inside a time interval

I have framed my data and overlaped, i want to include all the windows that fall into a time interval. right now i can only get ...

9 years ago | 0 answers | 0

### 0

answersQuestion

Is it possible to get the innside part envelope of the signal

I have a signal with a lot of peaks. what i want to achieve is to get the envelope of inner part of the signal, the one of tha...

9 years ago | 0 answers | 0

### 0

answersQuestion

how to plot a 2D graph on top of a 3D surf

i have a PSD spectrogram and want to plot on top of that a time series graph. In the link is what i want to achieve:<https://do...

9 years ago | 1 answer | 0

### 1

answerQuestion

How to plot a time series on top of a spectrogram surf

I'm stacked in this situation when i need to plot smth like this photo:<<https://docs.google.com/file/d/0B61s6H8F7eyNVXFCNFVseFF...

9 years ago | 0 answers | 0

### 0

answersQuestion

how to extract features from wavelet transform

i have some time series data and extracted features from that, mean, standard deviation, variance, ZCR etc. now i want to get f...

9 years ago | 1 answer | 0

### 1

answerQuestion

how to get the most repeated element of a cell array?

i have an cell array like this {[];[];[];[];[];[];[];[];'rj';'rj';'rj';'rj';'rj';'rj';'rj';'rj';'rj';'rj';'rj';'rj';'rj';'rj...

10 years ago | 3 answers | 0

### 3

answersQuestion

showing video and sensor graph simultaneously

Hi! i have some sensor data and also the video footage of that particular action. is there a way in matlab to show the video a...

10 years ago | 1 answer | 0

### 1

answerQuestion

renaming variable on workspace with string from cell of catalogue

i enter to a promt the name of my variable. that name is stored in a cell of catalogue. I want to use that name to rename my m...

10 years ago | 1 answer | 0

### 1

answerQuestion

trying to find peaks on a time series

i'm trying to find peaks on some time series data but when i write [pks,locs]=findpeaks(x) i get the position of peak on...

10 years ago | 2 answers | 0

### 2

answersQuestion

remove frame of timeseries data when criteria is not met.

I have some time series data, and i framed for further proccessing. I need to skip those frames that does not meet pas the thre...

10 years ago | 0 answers | 0