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Smith Lab

Last seen: 4 månader ago |  Active since 2021

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Graduate student in the Department of Chemistry at the University of Georgia.

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Can you use islocalmax2 for a nxnxn grid where the values of that grid correspond to peaks in data density?
I am trying to pickout peaks of data density. I fit my data to a kernel density estimation using the mvksdensity function. I t...

7 månader ago | 1 answer | 0

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answer

Answered
How to find peaks in 3d mesh?
Matlab 2024a has a new function islocalmax2 that can find peaks for 3D surface. https://www.mathworks.com/help/matlab/ref/is...

7 månader ago | 0

Question


Finding intermediate points between two cartesian coordinates in 3D
I have two data points p1 and p2 with coordinates (x,y,z). How would I find all the intermediate points between them? In 2-dim...

7 månader ago | 1 answer | 0

1

answer

Question


Vectorize averaging a timerange in a large timetable
I have a timetable of data and a counter of sample times. When there is a non NaN "sample_times" variable, I want to average t...

ungefär ett år ago | 1 answer | 0

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Question


Skipping time windows in outlier test
I have a large dataset of 1second time-series data in a timetable. In the dataset I also have a binary flag for when there is a ...

ungefär ett år ago | 0 answers | 0

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answers

Question


Retime function creates new rowtimes going back to 1899
I have a timetable of data that I am trying to average to two minutes. When I use: CO2_TT = retime(CO2_TT,'regular','mean','Tim...

mer än ett år ago | 1 answer | 0

1

answer

Answered
Average sections of a timetable
Use 'IncludedEdge','right'

mer än ett år ago | 0

| accepted

Question


Average sections of a timetable
I have a data timetable. One of the variables is a flag that determines sample time and background time. For the purposes of my ...

mer än ett år ago | 1 answer | 0

1

answer

Question


Get duration of timerange
I have a timetable. I also have a timerange corresponding to data in that timetable. I am having a hard time thinking of how to ...

mer än ett år ago | 1 answer | 0

1

answer

Question


Why will categorical not convert this cell string?
What is the difference between these two lines? The first line works correctly. The second line is giving an error. Caused by...

nästan 2 år ago | 1 answer | 0

1

answer

Question


use boxplot to show distribution of values for a range of response variables
I have a timetable where the first column is the response and the rest are variables that I'm using as predictiors. I would lik...

ungefär 2 år ago | 1 answer | 0

1

answer

Question


Better work through indecies in a for loop
I use a for loop to compute the absorption of aerosol particles in time series data. I indicate the start and stop of sample tim...

ungefär 2 år ago | 1 answer | 0

1

answer

Question


datetime reading out NaT for all rows of structure except last in loop
I am trying to get durations of a reoccurring event in a timetable by taking the datestring of a file and removing a duration fr...

ungefär 2 år ago | 0 answers | 0

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answers

Answered
Movavg function doesn't compute values for the entire timeseries
The issue is coming from NaN values in the timetable. I treat the data before I smooth it with a filter for erroneous points and...

ungefär 2 år ago | 0

Question


Movavg function doesn't compute values for the entire timeseries
I use the movavg function twice to do a double exponential smoothing on timeseries data, and for some reasong it's only computin...

ungefär 2 år ago | 2 answers | 0

2

answers

Question


convert 12 hour data to 24 hour datetime data for timetable
I have a data table with the first 3 variables corresponding to the date/time. I would like to convert the date time variables t...

mer än 2 år ago | 3 answers | 0

3

answers

Answered
Call the most recent timetable value
So, I answered my own question. But, maybe someone has a better solution! I take the difference between the times of the measur...

mer än 3 år ago | 0

| accepted

Question


Call the most recent timetable value
I have 2 timetables. In order to make a calculation on the data in the first table, I need to call the most recent values of the...

mer än 3 år ago | 1 answer | 0

1

answer

Question


Subtract I0 from subsequent timetable values
I have a timetable with different variables corresponding to measurements made with an instrument. One of the variables is a log...

nästan 4 år ago | 1 answer | 0

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