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LO


Last seen: 26 days ago
46 total contributions since 2018

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Question


how can I trace a ROI with fixed size on multiple images ?
I am trying to register images from a stack. they are frames taken from a video in which an object is moving. I tried to use the...

2 months ago | 0 answers | 0

0

answers

Answered
How do you send a digital signal as an output to NI DAQ system?
See the properties of your daq by typing its device name in command line. See how the channels are called and which types you ha...

3 months ago | 0

Answered
Matlab crashes every time I copy a (even small) number of blocks to my Simulink model
Are you running Matlab with admin rights? I experienced similar issues when I wasn't. See if it works.

3 months ago | 0

Answered
Using APP designer to communicate with the GIGE camera
You can combine VideoReader function with image binarization and extract "blobs" of a desired frame at a time. From the blobs Ma...

3 months ago | 0

Answered
How to swap between X, Y and Z in 3D plot
the function permute rearranges the order of the axes. S = permute(S,[1 2 3]); S1 = S = permute(S,[3 1 2]); % swapped matrix

3 months ago | 0

Answered
how do you count points on a graph
use getpts https://de.mathworks.com/help/images/ref/getpts.html

3 months ago | 0

Answered
Power Spectra estimation after FFT
try this example: sampling_freq = 5000 window = 8192, noverlap = 4096, nfft = 8192, [p,f] = pwelch(your_signal, 8192,409...

3 months ago | 0

| accepted

Question


error in matlab arithmetic operations ?
I am puzzled by the result of this operation in matlab: I have a var that equals 3 I am trying to calculate (var-1)*60 instea...

4 months ago | 1 answer | 0

1

answer

Question


add row to table in app designer - works ... but not completely
I am trying to add rows to a table by clicking a button in a GUI the code is as follows: the table is first initialized through...

4 months ago | 1 answer | 0

1

answer

Question


how to add a single element to a table in app designer ?
this line adds one element to the first cell of the table (if the content is numeric) app.UITable.Data = [app.UITable.Data(:);a...

4 months ago | 1 answer | 0

1

answer

Question


how to skip spinner values based on variable/button ?
I have a spinner associated to a button I would like this button to be inactive for spinner values "during" which I pressed ano...

4 months ago | 0 answers | 0

0

answers

Question


how to update progress gauge based on analyze progress in App designer GUI ?
I am trying to use a gui to go through some data and analyze segments of them. I am able to select different segments using a s...

4 months ago | 0 answers | 0

0

answers

Question


how can I set spinner limit range based on text box entry ?
I have a gui with a spinner in it I would like to input a value in a text box and use it as upper limit for the spinner can't ...

4 months ago | 1 answer | 0

1

answer

Answered
How to read spectrogram outputs and pick out interesting time-window?
the spectrogram can be handled as a surf plot if f is the freq you get out of the spectrogram fs is the freq range of you segme...

4 months ago | 0

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 ...

4 months ago | 0 answers | 0

0

answers

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...

7 months ago | 1 answer | 0

1

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. ...

7 months ago | 0 answers | 0

0

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...

8 months ago | 0 answers | 0

0

answers

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 ...

8 months ago | 1 answer | 0

1

answer

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...

1 year 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 ?

1 year 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...

1 year 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...

1 year 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...

1 year ago | 0 answers | 0

0

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...

1 year ago | 1 answer | 0

1

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...

1 year 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 ...

1 year 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...

1 year 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...

1 year 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...

1 year ago | 1 answer | 0

1

answer

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