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usage examples [WIP]
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README.Rmd

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@@ -32,7 +32,7 @@ The Forest Inventory and Analysis Program ([FIA](https://research.fs.usda.gov/pr
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* mapping erosion risk [[11]](#references)
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* assessment of tree canopy cover estimation methods [[12, 13]](#references)
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Note that analysis or computation based on tree spatial pattern within a plot require input data with coordinates of individual stems given as aziumuth and distance from the sample center point. FIA no longer provide `AZIMUTH` and `DIST` attributes in the publicly available FIADB `TREE` table. The FIADB User Guide states that these attributes are now available by request from [FIA Spatial Data Services](https://research.fs.usda.gov/programs/fia/sds) [[14]](#references). Tree data without stem locations can be used in **FIAstemmap** with reduced functionality which includes predicting individual tree crown width and computing several stand structure metrics.
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Analysis or computation based on the tree spatial pattern within a plot require input data with coordinates of individual stems given as azimuth and distance from the sample center point. Note that FIA no longer provide `AZIMUTH` and `DIST` attributes in the publicly available FIADB `TREE` table. The FIADB User Guide states that these attributes are now available by request from [FIA Spatial Data Services](https://research.fs.usda.gov/programs/fia/sds) [[14]](#references). Tree data without stem locations can still be used in **FIAstemmap** for certain functionality, which includes predicting individual tree crown width and computing several stand structure metrics.
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## Installation
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main = "plantation microplot 4")
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```
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Helper functions are provided to facilitate analyzing FIA tree lists as Spatial Point Patterns using the **spatstat** library. `create_fia_ppp()` returns an object of class `"ppp"` representing the point pattern of an FIA tree list in the 2-D plane. This object can be used with functions of package **spatstat.explore** for additional plotting capabilty, computation of descriptive spatial statistics, and other exploratory data analysis.
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Helper functions are provided to facilitate analyzing FIA tree lists as Spatial Point Patterns using the **spatstat** library. `create_fia_ppp()` returns an object of class `"ppp"` representing the point pattern of an FIA tree list in the 2-D plane. This object can be used with functions of package **spatstat.explore** for additional plotting capability, computation of descriptive spatial statistics, and other exploratory data analysis.
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```{r spatstat-explore}
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# point pattern object for the plantation tree list

README.md

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- assessment of tree canopy cover estimation methods [\[12,
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13\]](#references)
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Note that analysis or computation based on tree spatial pattern within a
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plot require input data with coordinates of individual stems given as
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aziumuth and distance from the sample center point. FIA no longer
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Analysis or computation based on the tree spatial pattern within a plot
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require input data with coordinates of individual stems given as azimuth
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and distance from the sample center point. Note that FIA no longer
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provide `AZIMUTH` and `DIST` attributes in the publicly available FIADB
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`TREE` table. The FIADB User Guide states that these attributes are now
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available by request from [FIA Spatial Data
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Services](https://research.fs.usda.gov/programs/fia/sds)
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[\[14\]](#references). Tree data without stem locations can be used in
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**FIAstemmap** with reduced functionality which includes predicting
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individual tree crown width and computing several stand structure
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metrics.
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[\[14\]](#references). Tree data without stem locations can still be
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used in **FIAstemmap** for certain functionality, which includes
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predicting individual tree crown width and computing several stand
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structure metrics.
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## Installation
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`create_fia_ppp()` returns an object of class `"ppp"` representing the
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point pattern of an FIA tree list in the 2-D plane. This object can be
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used with functions of package **spatstat.explore** for additional
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plotting capabilty, computation of descriptive spatial statistics, and
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plotting capability, computation of descriptive spatial statistics, and
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other exploratory data analysis.
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``` r

inst/WORDLIST

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Bechtold
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Biging
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Blinn
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Burrill
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CMD
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CRC
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Cadaret
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Chengquan
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Conkling
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Connot
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Coulston
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Crookston
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Dacia
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Daryn
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Derwin
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DiTommaso
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Dockter
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FIA
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FIADB
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Kasia
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Klauer
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Kost
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Kralicek
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LANDFIRE
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LF
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Lepine
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Liknes
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Lucie
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MCFNS
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Mancos
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McGrann
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Modelling
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Moisen
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NAIP
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NFI
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NLCD
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Nouwakpo
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Penttinen

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