rcaiman (version 1.2.2)

test_lens_coef: Test lens projection functions

Description

Test if a lens projection function will work between the 0-to-1 range.

Usage

test_lens_coef(lens_coef)

Value

Returns invisible(TRUE) and print "Test passed" if all tests pass, otherwise throws an error.

Arguments

lens_coef

Numeric vector. Polynomial coefficients of the lens projection function. See calibrate_lens().

Details

The package tolerate a number very close to 1 but not exactly 1 as long as it is greater than 1. Therefore, when the test fails at this "Test that lens projection function does not predict values barely below one", the best practice is to manually edit the last coefficient. For instance, changing it from -0.0296 to -0.0295. See testthat::expect_equal() for further details.

If it fails in "Test that lens projection function works between the 0-to-1 range", collecting data again might be necessary.

See Also

Other Lens Functions: azimuth_image(), calc_diameter(), calc_relative_radius(), calc_zenith_colrow(), calibrate_lens(), crosscalibrate_lens(), expand_noncircular(), extract_radiometry(), fisheye_to_equidistant(), fisheye_to_pano(), lens(), zenith_image()

Examples

test_lens_coef(lens("Nikon_FCE9"))
test_lens_coef(2/pi)