ktch.io

The ktch.io module implements I/O interface for morphometrics file formats.

I/O Functions

io.read_tps(file_path[, as_frame])	Read landmark data from a TPS file.
io.write_tps(file_path, landmarks[, ...])	Write landmark data to a TPS file.
io.read_chc(file_path[, as_frame])	Read chain code (.chc) file.
io.write_chc(file_path, chain_codes[, ...])	Write chain code to .chc file.
io.read_nef(file_path[, as_frame])	Read normalized EFD (.nef) file.
io.write_nef(file_path, coeffs[, ...])	Write normalized EFD coefficients to a .nef file.
io.read_spharmpdm_coef(path)	Read .coef file of SPHARM-PDM.

Data Containers

io.NefData(specimen_name, coeffs[, const_flags])	Normalized elliptic Fourier descriptor data.
io.ChainCodeData(specimen_name, x, y, ...[, ...])	Chain code data class.
io.TPSData(specimen_name, landmarks, ...)	Data for a single specimen in TPS format.
io.SpharmPdmData(specimen_name, coeffs)	SPHARM-PDM coefficient data for a single specimen.

Protocols

io.MorphoData(*args, **kwargs)	Interface for morphometric data containers.
io.MorphoDataMixin()	Shared implementation for morphometric data containers.

Conversion Functions

io.nef_to_efa_coeffs(nef_data[, dc_offset])	Convert NefData to EFA-compatible flat coefficient vectors.
io.efa_coeffs_to_nef(coeffs[, ...])	Convert EFA flat coefficient vectors to NefData objects.
io.convert_coords_df_to_list(df_coords)	Convert a coordinate DataFrame to a list of per-specimen arrays.
io.convert_coords_df_to_df_sklearn_transform(...)	Convert a coordinate DataFrame to sklearn-compatible wide format.