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

TallyLakeR Documentation

Tally Lake, Flathead National Forest, Montana, USA


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 (polygons).




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 curvature 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 curvature for pixels in stand

  • tancrvm Mean of tangent curvature for pixels in stand

  • tancrvsdStandard deviation of tangent curvature for pixels in stand


USDA Forest Service


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 https://academic.oup.com/forestscience/article/53/1/62/4604364

Stage, A.R. (1976). An expression for the effect of aspect, slope, and habitat type on tree growth. For. Sci. 22(4):457-460. https://academic.oup.com/forestscience/article-abstract/22/4/457/4675852

yaImpute documentation built on Nov. 4, 2022, 1:06 a.m.

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