Question


pulse train generator - wrong freq output
I am trying to get 50 Hz digital output from a USB-6211 using the code below. The TTL is supposed to activate a device which is ...

ongeveer 2 jaar ago | 0 answers | 0

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Question


Interpolate 2D matrix of x,y coordinates
I am trying to estimate the missing points of a matrix of 2D coordinates obtained from the video of a moving object. the coordi...

meer dan 2 jaar ago | 1 answer | 0

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answer

Question


how to generate a pulse train of known frequency and visualize/count the pulses (NI USB 6211 DAQ)
Hi everyone I am having trouble with some code to start a pulse generation from a device (NI USB-6211 DAQ) while counting it. ...

meer dan 2 jaar ago | 0 answers | 0

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answers

Question


ribbon plot with different variable arrays
I have some troubles plotting a data set using the ribbon plot function. My data are organized in 3 arrays: X=1621x10 double...

meer dan 2 jaar ago | 0 answers | 0

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Question


Scatterhist without normalized y axes on the marginal histograms. How ?
I am trying to plot some data using the scatterhist function. The plotting works perfectly if not for one thing: when plotting ...

meer dan 2 jaar ago | 1 answer | 0

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Answered
slicing a volume in desired direction
I am not sure what you want to achieve perhaps you could use the find function to determine vertices ranges, select them, and u...

ongeveer 3 jaar ago | 1

Answered
timer function is not executing the function i am providing ,please help me with this?
ritik does not seem to be a matlab function, could you post your code ?

ongeveer 3 jaar ago | 0

Answered
Findpeaks loop value not saving separately
not sure what you want to do but I try to guess. you can use the function "diff" between elements of different matrices (for co...

ongeveer 3 jaar ago | 0

| accepted

Answered
How to pull edit box string from uicontrol
as an alternative, instead of using an external function you could type edittest = uicontrol('Style', 'edit', 'Position', [2...

ongeveer 3 jaar ago | 0

Question


how to get value of uicontrol edit text without calling a function ?
I am trying to edit some data in real time by using a uicontrol edit box. the box prompt me each value taken from an array (wid...

ongeveer 3 jaar ago | 0 answers | 0

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answers

Question


how can I do PCA on a table ?
I have a 3000 x 18 table containing 18 variables (one per column) of both numerical and categorical type (6 categorical). I wou...

ongeveer 3 jaar ago | 1 answer | 0

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answer

Question


matrix with mixed data ?
I have some variables of mixed type (categorical and numerical) I would like to build a table or cell array (or a matrix in gen...

ongeveer 3 jaar ago | 1 answer | 0

1

answer

Answered
is there a way to obtain peak width after peak detection ?
I know that, thanks. what I wanted to know is whether one could get those values without doing the peak detection again but I ...

ongeveer 3 jaar ago | 0

Question


is there a way to obtain peak width after peak detection ?
I have used the function findpeaks to detect spikes in a signal however I have initially used the halfprominence as width-refer...

ongeveer 3 jaar ago | 3 answers | 0

3

answers

Question


measure time from fft spectrogram
trying to convert the time scale of a signal visualized on a spectrogram in sec/msec. the spectrogram has been calculated using...

ongeveer 3 jaar ago | 1 answer | 0

1

answer

Question


medfreq with delta-F threshold ?
I am using the medfreq function to extract fast freq changes (few ms) in a sinewave signal. The function seems to work pretty we...

ongeveer 3 jaar ago | 1 answer | 0

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Question


how to set RBW while using medfreq ?
Is there a mathematical/precise way to calculate an optimal rbw (resolution bandwidth) while using the command medfreq to calcul...

ongeveer 3 jaar ago | 0 answers | 0

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Question


simple formula to remove rows with repeated values in N x 2 matrix
I have a set of XY coordinates in a N x 2 matrix I would like to remove those pairs in which X values are the same I do not w...

ongeveer 3 jaar ago | 1 answer | 0

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answer

Question


measure event duration in spectrogram
How could one measure the duration of an event in seconds based on spectrogram data and related parameters (nfft, overlap, Fs) ?...

ongeveer 3 jaar ago | 0 answers | 0

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answers

Question


how to import gstreamer input in matlab
I am trying to stream a video over TCP in matlab. I have a raspberry pi streaming a video using Gstreamer (ver 1.0) and a laptop...

meer dan 3 jaar ago | 0 answers | 0

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Answered
Gstreamer 1.0 error for Matlab 2018b
Hi Prospero I am trying to import a video stream from gstreamer in matlab. Could you share the code on how to do that ?

meer dan 3 jaar ago | 0

Question


chirp generation in for loop
Perhaps someone could help. I would like to generate a sinewave function with frequency modulations at given time points (timest...

meer dan 3 jaar ago | 0 answers | 0

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answers

Question


How can I loop fread through the same data file multiple times ?
I have a large binary related to 1 hour recording from 16 electrodes (each of them part of a "pair"). The binary data has in the...

meer dan 3 jaar ago | 0 answers | 0

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Question


extract bands from spectrogram to measure frequency excursions
I would like to measure the length of frequency excursions from spectrogram chirp data. here is my spectrogram. [spec,f...

meer dan 3 jaar ago | 0 answers | 1

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Question


How to bin xcorr data ? (averaging time series of binary data into larger bins for cross-correlation analysis)
Hi, I have two arrays (time series) - z1 and z2 - related to recordings from 2 different channels. Their size is 1x59898. I am u...

bijna 4 jaar ago | 0 answers | 0

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Question


How to loop fopen/fread/fseek to analyze large binary files in shorter segments ?
I have a large bin file (10Gb) which contains binary data from 16 channels in a single array, plus one value for the time variab...

bijna 4 jaar ago | 1 answer | 0

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answer

Question


How to a log analog input data from during background continuous acquisition ?
I am trying to save data recorded during a background acquisition. In theory, following the online help, one could add a listene...

bijna 4 jaar ago | 0 answers | 0

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Question


how to split in subplot real time analog input monitoring (scope)
Hi, I have this script which I am trying to use to visualize data input from multiple analog channels (from 2 niDAQ USB 6211 dev...

bijna 4 jaar ago | 0 answers | 0

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Question


How to plot real-time with nidaq, using subplot to separate channels in different graphs
I am trying to visualize the input from 16 different analog ch using this script (obtained through the built-in APP "analog inpu...

bijna 4 jaar ago | 1 answer | 0

1

answer

Question


timescope tutorial - multiple inputs
Is there a tutorial with syntax and examples for using timescope with multiple channels (N = 16) and maybe a chance to have mult...

bijna 4 jaar ago | 0 answers | 0

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