Geospatial - GIS
Tusitusiga mo faʻatulagaina faigata
Lisi o Meli Lisi o se 'upega tafaʻilagi e ofoina atu tulafono faʻapitoa i Javascript ma nisi i excel, mo faʻamatalaga i mataʻitusi.
Faatasi ai ma le sili ona aoga o:
- Iloiloina o se mamao mai lua mafutaga (lat / long)
Faʻasologaina le mamao aupito mamao e faʻaaoga ai le fua Haversine, naʻo le manaʻoga o faʻavae ma mea e taunuʻu iai e tatau ona tusia. E le gata e maua ai le iʻuga o faʻatatauga, ae o le tulafono ua tusia, o se hyperlink e vaʻaia ai le vector i le Google Earth ma se metotia i Excel.
O le mea moni lenei:
d = acos (e aunoa ma (lat1) a aunoa ma (lat)2) + cos (lat1) .cos (lat2) .cos (umi2-Long1)) R
O le JavaScript lenei:
var R = 6371; // km var d = acos (Math.sin (lat1) * Math.sin (lat2) + Math.cos (lat1) * Math.cos (lat2) * Math.cos (lon2-lon1)) * R;
O le faiga lenei i Excel:
=ACOS(SIN(Lat1)*SIN(Lat2) +COS(Lat1)*COS(Lat2) *COS(Lon2-Lon1))*6371
E le gata i lea e mafai ona e vaʻai i tulafono mo faʻataʻitaʻiga e pei o:
- Fua faʻatatau o le vasega
- Midpoint
- Faʻatulagaina o faʻasagaga mai se tasi na mafua mai ma tauaveina
- Polokalame suʻesuʻe
- Liua i le va o tikeri / minute / sekone ma numera decimal
Vaʻai foliga, o le faʻamatalaga e sili ona aoga mo i latou o loʻo atinaʻe ni upega tafaʻilagi, aua ua tusia ai tulafono
Via: Anieto2k
