TallyLake {yaImpute}R Documentation

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)

Format

A data frame with 847 rows and 29 columns:

Ground based measurements of trees (Y-variables):

  1. TopHt - Height of tallest trees (ft)

  2. LnVolL - Log of the volume (ft^3/acre) of western larch

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

  4. LnVolLP - Log of the volume (ft^3/acre) of lodgepole pine

  5. LnVolES - Log of the volume (ft^3/acre) of Engelmann spruce

  6. LnVolAF - Log of the volume (ft^3/acre) of alpine fir

  7. LnVolPP - Log of the volume (ft^3/acre) of ponderosa pine

  8. CCover - Canopy cover (percent)

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

  1. utmx - UTM easting at plot center

  2. utmy - UTM northing at plot center

  3. elevm - Mean elevation (ft) above sea level over plot

  4. eevsqrd - (elevm-1600)^2

  5. slopem - Mean slope (percent) over plot

  6. slpcosaspm - Mean of slope (proportion) times the cosine of aspect (see Stage (1976) for description of this transformation

  7. slpsinaspm - Mean of slope (proportion) times the sine of aspect

Additional X-variables:

  1. ctim - Mean of slope curviture over pixels in stand

  2. tmb1m - Mean of LandSat band 1 over pixels in stand

  3. tmb2m - Mean of LandSat band 2 over pixels in stand

  4. tmb3m - Mean of LandSat band 3 over pixels in stand

  5. tmb4m - Mean of LandSat band 4 over pixels in stand

  6. tmb5m - Mean of LandSat band 5 over pixels in stand

  7. tmb6m - Mean of LandSat band 6 over pixels in stand

  8. durm - Mean of light duration over pixels in stand

  9. insom - Mean of solar insolation over pixels in stand

  10. msavim - Mean of AVI for pixels in stand

  11. ndvim - Mean of NDVI for pixels in stand

  12. crvm - Mean of slope curviture for pixels in stand

  13. tancrvm - Mean of tangent curvature for pixels in stand

  14. tancrvsd - Standard deviation of tangent curvature for pixels in stand

Source

USDA Forest Service

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 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

[Package yaImpute version 1.0-34 Index]