Package: TapeR 0.5.3

TapeR: Flexible Tree Taper Curves Based on Semiparametric Mixed Models

Implementation of functions for fitting taper curves (a semiparametric linear mixed effects taper model) to diameter measurements along stems. Further functions are provided to estimate the uncertainty around the predicted curves, to calculate timber volume (also by sections) and marginal (e.g., upper) diameters. For cases where tree heights are not measured, methods for estimating additional variance in volume predictions resulting from uncertainties in tree height models (tariffs) are provided. The example data include the taper curve parameters for Norway spruce used in the 3rd German NFI fitted to 380 trees and a subset of section-wise diameter measurements of these trees. The functions implemented here are detailed in Kublin, E., Breidenbach, J., Kaendler, G. (2013) <doi:10.1007/s10342-013-0715-0>.

Authors:Edgar Kublin [aut], Johannes Breidenbach [ctb], Christian Vonderach [ctb, cre]

TapeR_0.5.3.tar.gz
TapeR_0.5.3.zip(r-4.5)TapeR_0.5.3.zip(r-4.4)TapeR_0.5.3.zip(r-4.3)
TapeR_0.5.3.tgz(r-4.4-any)TapeR_0.5.3.tgz(r-4.3-any)
TapeR_0.5.3.tar.gz(r-4.5-noble)TapeR_0.5.3.tar.gz(r-4.4-noble)
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TapeR.pdf |TapeR.html
TapeR/json (API)
NEWS

# Install 'TapeR' in R:
install.packages('TapeR', repos = c('https://vochr.r-universe.dev', 'https://cloud.r-project.org'))

Peer review:

Bug tracker:https://github.com/vochr/taper/issues

Datasets:
  • DxHx.df - Example dataset of 10 trees with 10 diameter and height measurements for each tree.
  • HT.par - Height tariff parameters for estimating tree heights of unmeasured trees in the BWI3.
  • SK.par.lme - Taper model parameters for spruce in Germany based on BWI3 data.

On CRAN:

4.35 score 1 packages 15 scripts 228 downloads 7 exports 3 dependencies

Last updated 10 months agofrom:fe41528f8e. Checks:OK: 3 NOTE: 4. Indexed: yes.

TargetResultDate
Doc / VignettesOKOct 26 2024
R-4.5-winNOTEOct 26 2024
R-4.5-linuxNOTEOct 26 2024
R-4.4-winNOTEOct 26 2024
R-4.4-macNOTEOct 26 2024
R-4.3-winOKOct 26 2024
R-4.3-macOKOct 26 2024

Exports:E_DHx_HmDm_HT_CIdHt.fE_DHx_HmDm_HT.fE_HDx_HmDm_HT.fE_VOL_AB_HmDm_HT.fresVarSK_EBLUP_LME.fTapeR_FIT_LME.f

Dependencies:latticenlmepracma

TapeR: Flexible stem taper modelling

Rendered fromTapeR.Rnwusingutils::Sweaveon Oct 26 2024.

Last update: 2021-07-23
Started: 2020-06-11

Readme and manuals

Help Manual

Help pageTopics
Flexible tree taper curves based on Semiparametric Mixed Models.TapeR-package TapeR
builds B-Splines Matrix with appropriate knots for taper fittingBSplines
percentile for estimated taper curve diameterCdN_DHxHt.f
evaluate Normal distributiondN.f
Example dataset of 10 trees with 10 diameter and height measurements for each tree.DxHx.df
Estimate diameter and exact confidence and prediction intervalsE_DHx_HmDm_HT_CIdHt.f
Estimate diameter and approximate confidence and prediction intervalsE_DHx_HmDm_HT.f
Estimate height of given diameterE_HDx_HmDm_HT.f
Estimate volume for stem and sectionsE_VOL_AB_HmDm_HT.f
estimate cubic smoothing spline with linear extrapolationEYx_ssp.f
Height tariff parameters for estimating tree heights of unmeasured trees in the BWI3.HT.par
find root (height) given diameter, measurements and fitted modelHx_root.f
Int_CdN_DHx_dHt.fInt_CdN_DHx_dHt.f
Int_E_VOL_AB_HmDm_HT_dHt.fInt_E_VOL_AB_HmDm_HT_dHt.f
qD.rout.fqD.rout.f
Functions to put different size of uncertainty on given measurementsresVar
Evaluate fitted taper curveSK_EBLUP_LME.f
taper volume estimationSK_VOLab_EBLUP_LME.f
Taper model parameters for spruce in Germany based on BWI3 data.SK.par.lme
Fits a taper curve model to the specified diameter-height dataTapeR_FIT_LME.f
transform knot vectorTransKnots
update variance-covariance matrixupdateKOV
xy0_root.fxy0_root.f
find relative height of given diameterxy0_SK_EBLUP_LME.f
construct B-Splines design matricesXZ_BSPLINE.f
squared diameter using interpolating splinesy2x_isp.f
squared diameter using smoothing splinesy2x_ssp.f
diameter using interpolating splinesyx_isp.f
diameter using smoothing splinesyx_ssp.f