Nā ʻōkuhi no nā helu helu paʻakikī

Nā Palapala Hōʻano Move ʻO kahi pūnaewele e hāʻawi nei i nā code complex ma Javascript a i kekahi ma waho, no nā noi i loko o ka'ōnaehana.

Aia kekahi o nā mea nui loa:

• Ka heluʻana i kahi mamao mai nā kikowaenaʻelua (lat / lōʻihi)

Hoʻopiliʻia ka palena pōkole me keʻano Haversine, koi wale ia i nā kikowaena o ke kumu a me nā kiko huakaʻi e hoʻokomo ʻia. ʻAʻole ia e hoʻomāhuahua i ka hopena o nā helu, akā ua kākau ʻia ke code, kahi hyperlink e nānā i ka vector ma Google Earth a me ka mana i ka excel.

ʻO kēia ke kumu hoʻopiʻi:

d = acos (hewa lat₁) .sin (lat₂) + cos (lat₁) .cos (lat₂) .cos (lōʻihi₂ʻokoʻa₁)), R

ʻO kēia ka code JavaScript:

var R = 6371; // ei var b = acos (Math.sin (lat1) * Math.sin (lat2) + Math.cos (lat1) * Math.cos (lat2) * Math.cos (lon2-lon1)) * R;

Eia keʻano ma Excel:

=ACOS(SIN(Lat1)*SIN(Lat2) +COS(Lat1)*COS(Lat2) *COS(Lon2-Lon1))*6371

Eia hou, hiki iāʻoe keʻike i nā code no nā helu helu like:

• Ka helu papa
• Wahi waena
• Nā Luna hoʻohui o kahi huakaʻi mai kahi kumu a me ka papa
• Paena Pūnaewele
• Ka hoʻololiʻana ma waena o nā kūkelē / minuke / kekona a me nā helu decimal

E nānā, he kūpono loa kaʻike no nā mea e hoʻomohala i nā polokalamu pūnaewele, no ka mea, aia nā kānāwai i kākauʻia

Via: Anieto2k