Package index • simplerspec

All functions
`assess_multimodels()`	Assess multiple pairs of measured and predicted values
`average_spc()`	Average spectra in list-column by entries in grouping column
`bind_lcols_dts()`	Bind list-columns within a tibble into a list of data.tables
`create_vip_rects()`	Create a data frame containing start and end positions (wavenumbers) where variable importance in projection (VIP) is > 1
`evaluate_model()` `summary_df()`	Calculate model evaluation metrics
`extract_lcols2dts()`	Extract multiple tibble list-columns and return data as list of data.tables
`extract_pls_vip()`	Extract VIPs (variable importance in the projection) for a PLS regression model output returned from model fitting with `simplerspec::fit_pls()`
`fit_pls()` `pls_ken_stone()`	Calibration sampling, model tuning, and PLS regression
`fit_rf()`	Calibration sampling, and random forest model tuning and evaluation
`gather_spc()`	Gather measurements of different spectra types, corresponding x-axis values and metadata from nested list.
`join_chem_spec()`	Join chemical and spectral data frames
`join_spc_chem()`	Join spectra data and chemical data tibbles
`merge_dts()`	Merge list-columns of spectra, x-axis values, metadata and additional measured variables into a single long form data.table
`merge_dts_l()`	Wrapper function around `merge_dts()` for list of tibbles to aggregate data for plotting.
`plot_pls_vip()`	Plot stacked ggplot2 graphs with the Variable Importance for the Projection (VIP) scores, mean replicate spectra (absorbance) per sample_id, and the preprocessed spectra.
`plot_spc()`	Plot tibble spectra
`plot_spc_ext()`	ggplot2 wrapper for extended spectra plotting
`predict_from_spc()`	Predict soil properties of new spectra based on a list of calibration models
`preprocess_spc()`	Preprocess spectra
`read_asd()`	Read ASD fieldspec spectrometer data export into into simplerspec spectra tibble.
`read_asd_bin()`	Read ASD binary files and gather spectra and metadata in tibble data frame.
`read_opus_bin_univ()`	Read a Bruker OPUS spectrum binary file
`read_opus_univ()`	Read a list of Bruker OPUS spectrum binary files.
`remove_outliers()`	Remove outlier spectra
`resample_spc()`	Resample spectra in list-column to new x-axis interval
`select_ref_spc()`	Select a set of reference spectra to be measured by reference analysis methods
`select_spc_vars()`	Select every n-th spectral variable for all spectra and x-values in spectral tibble (`spc_tbl`)
`slice_xvalues()`	Slice spectra into defined x-axis ranges
`soilspec_yamsys`	Soil spectra and laboratory reference data from Baumann et al. (2021)
`split_df2l()`	Split a tibble data frame into a list of tibbles by a group column

Reference

All functions