openair | Tools for air quality data analysis | Data Visualization library
kandi X-RAY | openair Summary
kandi X-RAY | openair Summary
openair has developed over several years to help analyse atmospheric composition data; initially focused on air quality data.
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QUESTION
In package "openair",i want to use 'importAURN' find all 2021 AURN site data in one dataset. i.e. merge all site data,or have other method find all 2021 AURN site data? How can i do it.
This code can know all aurn site
...ANSWER
Answered 2022-Mar-17 at 04:44Maybe this serves your purpose:
QUESTION
I have a time Series DataFrame:
[https://www.dropbox.com/s/elaxfuvqyip1eq8/SampleDF.csv?dl=0][1]
My intention is to divide this DataFrame into different seasons according to:
- winter: Dec Jan Feb
- Pre-monsoon: Mar Apr May Jun15 (i.e. till 15th of June)
- Monsoon: 15Jun Jul Aug Sep (i.e. from 15th of June)
- Post-monsoon: Oct Nov.
I tried using openair
package function
selectByDate()
But no luck yet. Being novice in R. Any help would be highly appreciated.
Thanks!
...ANSWER
Answered 2022-Mar-01 at 19:09Please see the lubridate
package which makes working with date/time a bit easier.
For your problem, I guess you can use sapply
:
QUESTION
I have two plots i.e. Taylor diagram and ggplot. I would like to plot them in a single plot (side-by-side). I tried "library(patchwork)", but unfortunately it doesn't work.
...ANSWER
Answered 2021-Oct-20 at 13:50How about with gridExtra::grid.arrange
QUESTION
I'm working with a large dataset of different variables collected during the dives of elephant seals. I would like to analyze my data on a fine-scale (20 second intervals). I want to bin my data into 20 second intervals, basically I just want to get the mean for every 20 seconds, so I can run more analysis on these intervals of data. However, I need to group my data by dive # so that I'm not binning information from separate dives.
There are three methods I've tried so far:
period.apply()
but I cannot group with this function.split()
to subset my data by dive #, but can't seem to find a way to then calculate the mean of different columns over 20 second intervals within these subsets.- openair package, using
timeaverage()
but continue to get an error (see code below).
Below is what the data looks like, and the code I've tried. I would like the means of Depth, MSA, rate_s, and HR for each 20 second window - grouped by diveNum and ~ideally~ also D_phase.
...ANSWER
Answered 2021-Sep-27 at 02:59You can use floor_date
function from lubridate
to bin data every 20 seconds. Group them along with diveNum
and D_phase
to get average of other columns using across
.
QUESTION
I need to read OpenAir files in Python.
According to the following vector driver description, GDAL has built-in OpenAir functionality: https://gdal.org/drivers/vector/openair.html
However there is no example code for reading such OpenAir files. So far I have tried to read a sample file using the following lines:
...ANSWER
Answered 2020-Oct-28 at 17:46Since you're dealing with vector data, you need to use ogr
instead of gdal
(it's normally packaged along with gdal
)
So you can do:
QUESTION
I made a plot for season (summer, spring, autumn and winter) using pollutionRose from the openair package. Here is the code:
...ANSWER
Answered 2020-Sep-19 at 02:18You can sort according to the season and then change the labels manually.
QUESTION
I have second-by-second data for channels A, B, and C as shown below (this just shows the first 6 rows):
...ANSWER
Answered 2020-Jul-27 at 14:59Using the dplyr
and tidyr
libraries, the interval to be averaged can be selected by filtering the dates and averaged.
It doesn't seem to be efficient but it can help you.
QUESTION
I am new to utilizing R and have a question regarding subsetting data in a large dataset into months. I am attempting to subset the data into different months starting with data from January. The package that I have loaded is openair.
I load the following file into regarding COVID data and have named it COVIDcases:
COVIDcases <- read.csv("https://query.data.world/s/lysuc3ab7q3zubthc6paesbrsff3oo", header=TRUE, stringsAsFactors=FALSE);
After loading the dataset I convert the date column to date instead of character
COVIDcases$Date <- as.Date(paste(COVIDcases$Date), "%m/%d/%y")
I then do a selectByDate statement to try and only analyze the January data.
JanuaryCasesdata <-selectByDate(COVIDcases$Date, start = "2020-01-01", end = "2020-01-31")
This is where I encounter a problem and keep getting the error:
"Error in `[.default`(mydata, , Names) : incorrect number of dimensions"
Is there anything in particular that I am doing wrong such as taking the wrong steps to subset the data?
...ANSWER
Answered 2020-May-18 at 19:06The documentation for selectByDate()
states that the first argument is
A data frame containing a
date
field in hourly or high resolution format.
That means that you need two changes to your code.
Firstly, the Date
field needs to be named date
(with a lower case d
). you can do this when you convert from character. (paste()
isn't doing anything here so you can get rid of it.)
QUESTION
I have already converted my data to an xts object and this error persists. I think it is related to my date format but, I have used the function as.Date to make sure my date format is right. Here is my code so far:
...ANSWER
Answered 2020-May-16 at 09:25You need to remove the date from your timeseries when creating an xts object. If you don't the date will appear in the matrix and will turn the matrix into a character matrix.
Using the data.frame new35 as a starting point:
QUESTION
I have 15-min observations of air temperature Temp
data that I would like to derive a daily mean for. I have been trying to use the openair
package with the timeAverage
function to get to this answer because it allows the user to set a minimum threshold for the amount of missing data that is allowed before it will derive a daily mean. However I keep getting the same error message associated with not being able to find the variable date
.
Here is an example of my dataframe
...ANSWER
Answered 2020-Apr-24 at 14:37I found a hacky way to get around the error message. What I did was rename the Date
column in MS Excel to date
. I then, also in MS Excel, reformatted the date
column to be in format yyyy-mm-dd hh:mm. After making these corrections I read the .csv file into R
and made the following adjustments.
This first correction, get the date
format into one that openair
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