/usr/share/ncarg/hluex/vectorplot/ is in libncarg-data 6.2.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ncarg/hluex/vectorplot/vc01c.c
/usr/share/ncarg/hluex/vectorplot/vc01f.f
/usr/share/ncarg/hluex/vectorplot/vc02c.c
/usr/share/ncarg/hluex/vectorplot/vc02f.f
/usr/share/ncarg/hluex/vectorplot/vc03c.c
/usr/share/ncarg/hluex/vectorplot/vc03f.f
/usr/share/ncarg/hluex/vectorplot/vc04c.c
/usr/share/ncarg/hluex/vectorplot/vc04f.f
/usr/share/ncarg/hluex/vectorplot/vc05c.c
/usr/share/ncarg/hluex/vectorplot/vc05f.f
/usr/share/ncarg/hluex/vectorplot/vc06c.c
/usr/share/ncarg/hluex/vectorplot/vc06f.f
/usr/share/ncarg/hluex/vectorplot/vc07c.c
/usr/share/ncarg/hluex/vectorplot/vc07f.f
/usr/share/ncarg/hluex/vectorplot/vc08c.c
/usr/share/ncarg/hluex/vectorplot/vc08f.f
/usr/share/ncarg/hluex/vectorplot/vc09c.c
/usr/share/ncarg/hluex/vectorplot/vc09f.f