To reference or cite the objects present in the Software Heritage archive, permalinks based on SoftWare Hash IDentifiers (SWHIDs) must be used. Select below a type of object currently browsed in order to display its associated SWHID and permalink.
swh:1:cnt:e6d4a6bc043c10f3e68694889005f4b44c3485be
"exp.earth.cov" <- function (x1, x2, theta = 1) { exp(-rdist.earth(x1, x2)/theta) }