A pre-generated PurpleAir Timeseries pat object will be
loaded for the month requested with datestamp
if available. Data are
loaded from the archive set with either setArchiveBaseUrl()
or
setArchiveBaseDir()
for locally archived files.
The datestamp
must be in the following format:
"YYYYmm"
By default, the current month is loaded.
pat_loadMonth( id = NULL, label = NULL, pas = NULL, datestamp = NULL, timezone = "America/Los_Angeles" )
id | PurpleAir sensor 'deviceDeploymentID'. |
---|---|
label | PurpleAir sensor 'label'. |
pas | PurpleAir Synoptic pas object. |
datestamp | Date string in ymd order. |
timezone | Timezone used to interpret |
A PurpleAir Timeseries pat object.
Starting with AirSensor version 0.6, archive file names are generated with a unique "device-deployment" identifier by combining a unique location ID with a unique device ID. These "device-deployment" identifiers guarantee that movement of a sensor will result in the creation of a new time series.
Users may request a pat object in one of two ways:
1) Pass in id
with a valid a deviceDeploymentID
2) Pass in both label
and pas
so that the
deviceDeploymentID
can be looked up.
# \donttest{ library(AirSensor) setArchiveBaseUrl("http://data.mazamascience.com/PurpleAir/v1") # Reference an older 'pas' before this sensor was dropped pas <- pas_load(20190901, archival = TRUE) may <- pat_loadMonth(label = "SCNP_20", pas = pas, datestamp = 201905) pat_multiPlot(may)#> Warning: Removed 2441 rows containing missing values (geom_point).#> Warning: Removed 2441 rows containing missing values (geom_point).#> Warning: Removed 2511 rows containing missing values (geom_point).#> Warning: Removed 2511 rows containing missing values (geom_point).#> Warning: conversion failure on 'μg / m³' in 'mbcsToSbcs': dot substituted for <ce>#> Warning: conversion failure on 'μg / m³' in 'mbcsToSbcs': dot substituted for <bc>#> Warning: conversion failure on 'μg / m³' in 'mbcsToSbcs': dot substituted for <ce>#> Warning: conversion failure on 'μg / m³' in 'mbcsToSbcs': dot substituted for <bc>#> Warning: conversion failure on 'μg / m³' in 'mbcsToSbcs': dot substituted for <ce>#> Warning: 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