tidyFIA

Install

At this time you must install the tidyFIA package via GitHub.

remotes::install_github("ncx-co/tidyFIA")

Usage

The main function is tidy_fia which will import the specified tables from FIADB that correspond to an area of interest represented by a geospatial object in R (class sf) or a list of state abbreviations (e.g. c("CA", "NV")).

To get started you can simply run this example command to get the FIA tables for the state of Minnesota.

mn_data <- tidyFIA::tidy_fia(
  states = "MN",
  postgis = FALSE,
  file_dir = tempdir()  # replace this with any normal directory to cache downloaded files!
)

By default, state-wise zip files will be downloaded from the FIA datamartto the R temporary directory(tempdir()) but you can specify them to be downloaded to any directory which makes it possible to use files downloaded during a previous R session.

Database

NCX is hosting a clone of FIADB data in a PostGIS database and you are welcome to use it! The code NCX used to build the FIADB clone is located in the fiadb subdirectory of this repository. Please reach out to Henry Rodman if you would like the password for the database and he will gladly share it.

Alternatively you can ask tidy_fia to download and import the data directly from the CSVs stored at the FIA datamart by setting the parameter postgis to FALSE. This is slower than querying the database but will work without any authentication.

The example will import these tables by default: "plot", "subplot", "cond", "tree", "survey"

Each table is an element in the list mn_data. To use one of the tables you call them like this:

mn_data[["plot"]]
mn_data[["tree"]]
...