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Changelog

Source: NEWS.md

AirSensor2 0.6.1

  • Added MVCAA Tutorial 1 article.

AirSensor2 0.6.0

  • Added OpenAQ integration for creating monitor objects from OpenAQ data.
  • New OpenAQ_createLocations() for discovering available locations with filtering and lookback support.
  • New OpenAQ_createMonitor() to generate AirSensor monitor objects with a guaranteed hourly time axis.
  • New OpenAQ_downloadRawData() with built-in pagination, rate limiting, and multi-sensor handling.
  • Added parameter and provider helper functions for working with OpenAQ metadata.
  • Implemented caching of OpenAQ metadata to improve performance.
  • Updated pat_applyCorrection() to latest EPA correction algorithm.
  • Added AirGradient_applyCorrection().

AirSensor2 0.5.7

AirSensor2 0.5.6

Added support for Clarity calibrationCategory = "global PM2.5 v2.1".

AirSensor2 0.5.5

Added support for private sensors by adding read_keys parameter to the following functions:

AirSensor2 0.5.4

  • Updated various examples that referenced example_pas with the newer example_pas_pm25.
  • Added example_pat_epa with fields required to run pat_applyCorrection().
  • Fixed the bug in pat_create() that generated:
Elements `last_modified`, `privacy`, `model`, `hardware`, `firmware_version`, etc. don't exist.

AirSensor2 0.5.3

Updated all Clarity functions to default to format = "USFS2" which returns two extra fields: calibrationId, calibrationCategory.

AirSensor2 0.5.2

Updated the of data that can be requested in a single call in pat_create() to match updates to the PurpleAir API:

Average Period Previous Limit New Limit
Real-Time 2 Days 30 Days
10 Minutes 3 Days 60 Days
30 Minutes 7 Days 90 Days
1 Hour 14 Days 180 Days
6 Hours 90 Days 1 Year
1 Day 1 Year 2 Years

AirSensor2 0.5.1

  • pat_createNew() now checks for and removes duplicate timesteps and guarantees that the returned object has class name ‘sts’ for “SingleTimeSeries” so that it can work with functions from MazamaTimeSeries.
  • Fixed bug in pat_toMonitor() that always complained about missing fields.
  • Fixed a bug where the sensor_index field returned from PurpleAir was sometimes interpreted as an integer instead of a character. (Identifiers should always be of character type as in “007” for James Bond.)
  • Fixed a bug in pat_downloadParseRawData() where timestamps representing number of seconds sometimes used exponential notation which the PurpleAir API does not understand. Example of the bug:
> MazamaCoreUtils::parseDatetime("2023-05-02 03:59:59", timezone = "UTC") %>% as.numeric()
[1] 1.683e+09

AirSensor2 0.5.0

Version 0.5 introduces changes in the default parameters that are requested when making data requests from the PurpleAir API. In the past, when data was free, functions download as many potentially relevant parameters as possible. Now that a payment system is in place, AirSensor2 will be focused on downloading as few parameters as required to accomplish a task. Many of the low level PurpleAir data access functions will thus behave differently.

Package dependency updates:

MazamaCoreUtils (>= 0.5.2)
MazamaLocationUtils (>= 0.4.3),
MazamaSpatialUtils (>= 0.8.6),
MazamaTimeSeries (>= 0.3.0),
AirMonitor (>= 0.4.0),
  • Modified pas_downloadParseRawData() defaults to only query for non-measurement fields defined in PurplAir_SENSOR_METADATA_FIELDS.
  • Added pas_filterDate() to help find historical sensor data.
  • Added pas_filterNearMonitor() to associate sensors with the closest available monitor in a mts_monitor object from the AirMonitor package.
  • Renamed pas_get() to pas_pull().
  • Updated pas_createNew() and pas_leaflet() to default to working with non-measurement fields defined in PurplAir_SENSOR_METADATA_FIELDS.
  • Added pas_lifespanPlot() to show when PurpleAir sensors were producing data.
  • Updated collections of fields used in creation of pas and pat objects:
    • PurpleAir_PAS_MINIMAL_FIELDS
    • PurpleAir_PAS_METADATA_FIELDS
    • PurpleAir_PAS_AVG_PM25_FIELDS
    • PurpleAir_PAList_PM25_FIELDS
    • PurpleAir_PAT_QC_FIELDS
    • PurpleAir_PAT_EPA_HOURLY_FIELDS
  • Added a sleep parameter to pat_create() to avoid “rate limiting” errors from the PurpleAir API.
  • Removed PurpleAir_createNewMonitor().
  • Added pat_toMonitor().
  • Renamed pat_createNew() to pat_create().
  • Added pat_createRaw().

AirSensor2 0.4.0

Updated to handle changes in upstream packages:

  • MazamaCoreUtils 0.4.15 => 0.5.1
  • MazamaLocationUtils 0.3.8 => 0.4.1
  • MazamaSpatialUtils 0.8.5 => 0.8.6
  • MazamaTimeSeries 0.2.13 => 0.2.15
  • AirMonitor 0.3.11 => 0.3.12

The breaking change that precipitated this was the change from 'zip' to 'postalCode' in the core metadata used by MazamaLocationUtils. For backwards compatibility, all functions that work with metadata will guarantee that both 'zip' and 'postalCode' exist. These include:

AirSensor2 0.3.7

AirSensor2 0.3.6

  • Updated all documentation to match current functionality.
  • Enabled faster downloading of pat data with parallel = TRUE. (not available on Windows)

AirSensor2 0.3.5

  • Updated Mazama package dependencies.
  • Updated example datasets.
  • Improved documentation and examples for pas~() functions.

AirSensor2 0.3.4

  • Renamed PurpleAir_createMonitor() to PurpleAir_createNewMonitor(). This leaves room for a modified PurpleAir_createMonitor() that will accept a previously saved “hourly pat” object.
  • Added “MVCAA Tutorial 1: Exploring PurpleAir Data” article.

AirSensor2 0.3.3

  • Added pm2.5_cf_1, pm2.5_cf_1_a, pm2.5_ f_1_b to PurpleAir_PAT_EPA_HOURLY_FIELDS so that the original EPA correction factor can be used with pm2.5_cf_1.
  • Added pat_applyCorrection() to apply a correction equation to “hourly pat” data. Default correction uses the correction as described in the documentation.
  • Exchanged the parameter argument for correction_FUN in `PurpleAir_createMonitor().

AirSensor2 0.3.2

  • Added pat_createHourly() as a convenience function for the common case of obtaining hourly aggergated for the following parameters: datetime, temperature, humidity, pm2.5_atm, pm2.5_atm_a, pm2.5_atm_b. Using this function greatly reduces data download volumes and allows for the most common forms of QC and correction.
  • Added PurpleAir_createMonitor() to directly create monitor objects suitable for use with the AirMonitor package. This is a preliminary version of this function that includes neither QC nor correction.

AirSensor2 0.3.1

  • Updated Clarity API functions to handle the addition of a nowcast_QCFlag in the returned data.
  • Removed geohashTools dependency.

AirSensor2 0.3.0

This version introduces data ingest functions for Clarity “Open” sensor data. In preparation for additional data providers, many of the PurpleAir functions using "pa" as shorthand have been renamed with a more explicit "PurpleAir":

  • Renamed all pa_~() functions to PurpleAir_~().
  • Renamed PURPLE_AIR_API_~ API keys to PurpleAir_API_~.
  • Renamed purple_air_synoptic class to PurpleAir_synoptic.

Clarity “Open” datasets are available to those with an API key allowing access to this data. The following functions provide access to Clarity “Open” data:

Generic synoptic data from non-PurpleAir providers (similar to PurpleAir ‘pas’ objects) is supported with:

AirSensor2 0.2.1

AirSensor2 0.2.0

Added full support for the PurpleAir API described at https://api.purpleair.com.

Improvements include wrapper functions for PurpleAir API endpoints:

Additional updates include:

AirSensor2 0.1.4

Documentation improvements to include links to PurpleAir Terms of service and Data license.

AirSensor2 0.1.3

  • Updated to use sf based MazamaSpatialUtils >= 0.8.
  • Added sf dependency.

AirSensor2 0.1.2

  • Now Depending on MazamaCoreUtils
  • Added AirMonitor dependency.
  • Removed sp dependency.
  • Now using APIKey functionality.
  • Added initial vignettes.

AirSensor2 0.1.1

  • Full pas functionality and documentation. Passes checks.

AirSensor2 0.1.0

The AirSensor2 package is a refactoring of the core, data access and manipulation functionality found in the AirSensor package. The goal in AirSensor2 is to create a lean and generic package focused on data ingest and basic data manipulation.

Initial functions to download and work with PurpleAir synoptic data.