Nws muaj plaub yam yam ntxwv ntawm daim ntawv qhia uas cuam tshuam rau qee qhov kev kawm, nyob ntawm seb daim duab qhia kev siv. Cov yam ntxwv no suav nrog nrug, kev taw qhia, duab, thiab cheeb tsam.
Dab tsi yog distortion hauv qhov projection?
map projections
Main article: Daim duab qhia chaw. Nyob rau hauv cartography, ib tug distortion yog qhov kev qhia tsis tseeb ntawm thaj chaw lossis cov duab ntawm lub ntsej muag Tsis muaj daim ntawv qhia kev kwv yees uas tuaj yeem tswj tau qhov ntsuas zoo tshaj plaws thoob plaws tag nrho qhov kev kwv yees vim tias lawv tau noj sphereoid thiab yuam nws mus rau qhov chaw tiaj tus.
Vim li cas txhua qhov kev kwv yees tsis txawv txav?
Vim tias koj tsis tuaj yeem tso saib 3D qhov chaw zoo kawg nkaus hauv ob qhov loj me, distortions ib txwm tshwm simPiv txwv li, daim ntawv qhia qhov projections distort nrug, kev taw qhia, nplai, thiab cheeb tsam. Txhua qhov projection muaj qhov zoo thiab qhov tsis zoo. Txhua yam, nws yog nyob ntawm tus kws kos duab los txiav txim siab seb qhov projection zoo tshaj plaws rau nws lub hom phiaj.
Qhov projection twg tsis muaj kev cuam tshuam?
Tsuas yog 'projection' uas muaj tag nrho cov yam ntxwv uas tsis muaj kev cuam tshuam yog ib lub ntiaj teb. 1° x 1° latitude thiab longitude yuav luag ib square, hos tib 'block' ze ntawm tus ncej yog yuav luag ib daim duab peb sab.
Dab tsi daim duab qhia chaw distort duab?
Ib daim ntawv qhia uas khaws cov duab yog conformal Txawm nyob rau hauv daim ntawv qhia conformal, cov duab yog me ntsis distorted rau cov cheeb tsam loj heev, zoo li continents. Daim ntawv qhia kev sib haum xeeb distorts cheeb tsam-feem ntau cov yam ntxwv yog piav qhia loj dhau los yog me dhau. Txawm li cas los xij, tus nqi ntawm qhov tsis sib xws, yog ib txwm nyob ntawm qee cov kab hauv daim ntawv qhia.
