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yaImpute (version 1.0-32)

TallyLake: Tally Lake, Flathead National Forest, Montana, USA

Description

Polygon-based reference data used by Stage and Crookston (2007) to demonstrate partitioning of error components and related statistics. Observations are summaries of data collected on forest stands (ploygons).

Usage

data(TallyLake)

Arguments

Format

A data frame with 847 rows and 29 columns:

Ground based measurements of trees (Y-variables):

  • TopHt Height of tallest trees (ft)

  • LnVolL Log of the volume \((ft^3/acre)\) of western larch

  • LnVolDF Log of the volume \((ft^3/acre)\) of Douglas-fir

  • LnVolLP Log of the volume \((ft^3/acre)\) of lodgepole pine

  • LnVolES Log of the volume \((ft^3/acre)\) of Engelmann spruce

  • LnVolAF Log of the volume \((ft^3/acre)\) of alpine fir

  • LnVolPP Log of the volume \((ft^3/acre)\) of ponderosa pine

  • CCover Canopy cover (percent)

Geographic Location, Slope, and Aspect (X-variables):

  • utmx UTM easting at plot center

  • utmy UTM northing at plot center

  • elevm Mean elevation (ft) above sea level over plot

  • eevsqrd \((elevm-1600)^2\)

  • slopem Mean slope (percent) over plot

  • slpcosaspmMean of slope (proportion) times the cosine of aspect (see Stage (1976) for description of this transformation)

  • slpsinaspmMean of slope (proportion) times the sine of aspect

Additional X-variables:

  • ctim Mean of slope curviture over pixels in stand

  • tmb1m Mean of LandSat band 1 over pixels in stand

  • tmb2m Mean of LandSat band 2 over pixels in stand

  • tmb3m Mean of LandSat band 3 over pixels in stand

  • tmb4m Mean of LandSat band 4 over pixels in stand

  • tmb5m Mean of LandSat band 5 over pixels in stand

  • tmb6m Mean of LandSat band 6 over pixels in stand

  • durm Mean of light duration over pixels in stand

  • insom Mean of solar insolation over pixels in stand

  • msavim Mean of AVI for pixels in stand

  • ndvim Mean of NDVI for pixels in stand

  • crvm Mean of slope curviture for pixels in stand

  • tancrvm Mean of tangent curvature for pixels in stand

  • tancrvsdStandard deviation of tangent curvature for pixels in stand

References

Stage, A.R.; Crookston, N.L. 2007. Partitioning error components for accuracy-assessment of near neighbor methods of imputation. For. Sci. 53(1):62-72 http://www.treesearch.fs.fed.us/pubs/28385

Stage, A.R. (1976). An expression for the effect of aspect, slope, and habitat type on tree growth. For. Sci. 22(4):457-460.