This dataframe is an example of what "pullSpeciesCodes" and "pullTrees" can do. This is our working dataset for most of our analyses, and has trimmed the full ca_tree CSV file down from 26.1 MB to 1.6MB, a much more manageable file. This file and its predecessor (FullTreesCA) are from the FIA Datamart at http://apps.fs.fed.us/fiadb-downloads/datamart.html. Please refer to the documentation for further details about these data: http://www.fia.fs.fed.us/library/database-documentation/
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A dataframe with 181,891 observations in 11 columns of individual trees records from CA.
The plot identifier.
The tree identifier.
The four digit species code, associated with RefSpecies.
Diameter at base height of trees, in inches.
The height of a tree in feet, including estimation if the tree was broken from wind damage.
The compacted crown ratio of a tree. This excludes open areas within the crown.
The crown density of a tree.
The transparency of a crown of a tree.
The breast height age of a tree, estimated from a tree core taken at breast height.
The total age of a tree, estimated from a tree core.
The amount of light that a tree receives.
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