
# pmetar

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Package allows to download current and historical METAR weather reports
and decode basic parameters.

### METAR weather reports source web pages

The main functions scrap data from the below web pages:

1.  For current reports, the function *metar_get*:

- Aviation Weather Center <https://aviationweather.gov/data/metar/>
  </li>

  <br>

2.  For historical reports, the function *metar_get_historical*:

- Iowa Environmental Mesonet web page of Iowa State University
  ASOS-AWOS-METAR <http://mesonet.agron.iastate.edu/AWOS/>
  </li>
- Weather Information Service <http://www.ogimet.com/> developed by
  Guillermo Ballester Valor

Please take into consideration that the <http://www.ogimet.com/> can
block too frequent requests for data due to the server overload. <br>

### Locations of METAR stations

Information about the locations of the METAR stations / ariports were
taken from two sources:

1.  The first choice is the file from <https://ourairports.com/data/>
    created by David Megginson.
2.  If information can’t be found, the second source is searched, the
    ADDS Station Table prepared by Greg Thompson NCAR/RAP. The file is
    available on the web page of Aviation Weather Center
    <https://weather.ral.ucar.edu/surface/stations.txt> from NOAA
    National Weather Service <https://www.weather.gov/>

The both above data sources are in the public domain.

#### Package pmetar is for extracting and parsing information, from current or historical METAR reports, only.

#### Don’t use it for flight planning or navigation!

### Installation

CRAN version

``` r
install.packages("pmetar")
```

Get the development version from github:

``` r
# install.packages("devtools")
devtools::install_github("prcwiek/pmetar", ref = "develop")
```

``` r
library('pmetar')
```

## Contributors

- David Megginson, Author of data set with airports list
  <https://ourairports.com/data/>
- Greg Thompson, Author of data set with airports list
  <https://weather.ral.ucar.edu/surface/stations.txt>
