Tus qauv rau Mercator's projection is T(ϕ, θ)=(θ, ln(|sec(ϕ) + tan(ϕ)|)).
Txoj kev ntawm Mercator projection yog dab tsi?
Thiab, tus Mercator qhov projection yog tsim kom tso cai rhumb kab kos rau ntawm qhov projection kom yog kab ncaj. Cov yam ntxwv no tshwj xeeb tshaj yog muaj txiaj ntsig zoo rau cov neeg taug kev uas lawv tuaj yeem nteg ib kab rhumb ntawm daim duab qhia chaw thiab tom qab ntawd ua raws nws cov lus qhia ntawm lub hauv paus mus rau qhov chaw.
Mercator projection hauv R yog dab tsi?
mercator: Mercator projection
Hloov cov longitude / latiude cov ntsiab lus rau Mercator projection. Lub hom phiaj tseem ceeb ntawm txoj haujlwm no yog txhawm rau suav cov centroids, thiab qhia cov kab rhumb hauv vignette.
Koj puas yog latitude?
1 Teb. Rau kev sib koom tes ntes siv GPS, lossis los ntawm ib qho twg, longitude yog X tus nqi thiab latitude yog Y tus nqi. Cov no yog rau thaj chaw tswj hwm thaj chaw thiab muaj chav nyob ntawm qib.
CRS daim ntawv qhia yog dab tsi?
A Kev sib koom ua ke (CRS) txhais, nrog kev pab ntawm kev tswj hwm, yuav ua li cas daim duab qhia ob sab, qhov phiaj xwm ntsig txog qhov chaw tiag tiag hauv ntiaj teb. Muaj ob hom kev sib koom tes sib koom ua ke: Geographic Coordinate Systems thiab Projected Coordinate Systems.
