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Is a PEST++ Executable Available?

Source: R/pesto_run.R
pestpp_available.Rd

A non-erroring capability probe for a PEST++ family executable. It is the documented way for examples, vignettes, and conditional tests to skip gracefully when no binary is installed: every PESTO algorithm runs natively in R, so the external binaries are needed only for the optional cross-checking and .pst-file paths.

Usage

pestpp_available(which = "pestpp-ies")

Arguments

which

Character scalar naming the executable to probe. Defaults to "pestpp-ies"; any PEST++ tool name is accepted, e.g. "pestpp-glm", "pestpp-swp", "pestpp-sen".

Value

A length-one logical: TRUE if the named executable is resolvable, FALSE otherwise. Never errors.

Details

The probe resolves the executable exactly as pesto_ies() and friends do – the per-tool environment variable (e.g. PESTPP_IES_EXE_PATH), then PESTPP_BIN_DIR, then the system PATH – but never throws. PESTO bundles no binaries: PEST++ ships no installer and is not on the PATH by default, so pointing at an existing install by environment variable is the normal way to reach it from R.

See also

pesto_ies(), pesto_glm()

Examples

# FALSE on a machine without PEST++ installed -- and that is fine:
pestpp_available()
#> [1] FALSE
pestpp_available("pestpp-glm")
#> [1] FALSE