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:64871a2ed93f7de4fea2fd9a7fbc88243b689e71
swh:1:dir:caa6b9768d671f535e8d51c1fe8bb528e4212aff
as.Date.cal.yr <- function( x, ... ) { structure( round( ( x - 1970 ) * 365.25 ), class="Date" ) }