1,Hoʻohana kēia huahana i kahi ʻano papa ʻekolu-dimensional a me ke ʻano kū pololei e hōʻike i nā ʻano ʻāina like ʻole e like me ke kāhea ʻāina contour.
2,E koho i ka ʻike kumu: nā piko o nā mauna, nā kualono, nā awāwa, nā noho lio, nā pali piʻi, nā muliwai, nā peʻahi alluvial, nā pali mālie, a me nā pali piʻi.
3,Hiki ke hoʻokaʻawale ʻia ka ʻāpana nui o ke kumu hoʻohālike i nā papa ma ka laina contour, a ua kahakiʻi ʻia ka ʻili a me ka ʻāpana papa me nā laina isotropic e pili ana.
4, Hoʻohana nui ʻia no ka hoʻonaʻauao geology crustal geography a i ʻole landform, hiki ke kōkua iā ʻoe e aʻo pololei a me ka maikaʻi, e hoʻomaopopo maikaʻi a hoʻokele. Mālama i ka manawa aʻo a hoʻomaikaʻi i ka pono o ke aʻo ʻana.
5,Hana ʻia mai ka mea PVC maikaʻi loa, he māmā kēia kumu hoʻohālike, kūʻē i ka popopo a paʻa hoʻi.