I-Google Earth; ukusekelwa okubonwayo kwabadwebi bezithombe

I-Google Earth, ngaphandle kokuba yinto yokuzijabulisa yomphakathi jikelele, isibuye isize ekuboneni imidwebo yemidwebo, kokubili ukukhombisa imiphumela nokuhlola ukuthi umsebenzi owenziwayo uyaguquguquka; hhayi ukusho njengethuluzi lokufundisa lezemfundo noma i-geodesy.

Kulokhu ngizosiza i-GIF eninginingi ukwakha ama-quadrants kanye neGoogle Earth ukuhlola imiphumela, ngisebenzisa ithuba lokuzivocavoca esilwenze ndawonye noCristian Mejía, umhloli wamazwe waseSucre osizo lwakhe lwenziwa ngosizo lwakhe. Ngokomthetho, sidinga ukuchaza indawo esizosebenzela kuyo, esimweni seBolivia, iphakathi kwezindawo 19, 20 no-21; kanye nobubanzi ama-degree angama-8 nama-24, eningizimu yezwe. Konke lokhu kungadonswa kuGoogle Earth ngokuhlolwa okulula, ukushintsha inketho ukukubona ku-UTM ukubona ngeso lengqondo izindawo kanye nendawo ukuze ubone izithambile namazinga aphezulu.

1. I-quadrant yezindawo ezintathu zentshisekelo.

Ku-Manifold kwenziwa nge Buka> igridi

Ngemuva kwalokho sikhombisa ukuthi silindele i-quadrant ephuma ebangeni -54 kuya ku -72, ayinalo iqiniso ngoba isentshonalanga Nenkabazwe. Futhi nobude esibukhetha phakathi kuka -8 no-24, kusesekubi ukuthi kungaphansi kwe-equator.

Siphinde sibonise ukuthi sifuna ukwahlukanisa kanjani; ubukhulu obuphelele yi-18 (3 Izimpukane zamadigri angu-6) ku-longitude naku-16 (2 times 8 degrees) ku-latitude. Sikhombisa ukuthi uyasikholelwa amathayili esikhundleni semigqa elula. Futhi lapho sinezindawo ezintathu, njengoba ngenhla kuGoogle Earth ,. Ukuyivivinya, sichofoza kwesokudla ungqimba bese sithumela ku-kml, okwenza isici sokubonakalayo sibe nengqondo kangangoba kwelebhu ye-geodesy eminyakeni engama-20 eyedlule kwakunzima ukuyiqonda.

2. Amamephu 1: 250,000

Isibonelo, sizosebenza endaweni engu-20 ngendlela efanayo. Kulokhu, amashidi ayi-1: 250,000 anesilinganiso esingu-1.5 x 1 degree, okulingana nokuhlukanisa yonke indawo ibe matrix engu-16 x 4 amathayili.

Sikhombisa ukuthi manje sifuna kuphela igridi ephakathi kwe-60 ne-66 ubude, futhi latitude kusuka ku-8 kuya ku-24; okusho ukuthi ama-6 amadirethi azohlukaniswa ngezigaba ze-1.5 namaphuzu angama-grade we-1.

Kwenziwe: ukubheka, chofoza kwesokudla bese uthumela ku-kml. Ekubukeni kwe-lat / long ungabheka ukuthi imigqa iyafana negridi yeGoogle Earth.

Ukwengeza ama-centroids, wonke amathayili ayakhethwa, bese kusetshenziswa umsebenzi we-geo-processing, njengoba kuboniswe kumfanekiso olandelayo. Akudingekile ukwenza olunye ungqimba, njengoba Manifold isekela izinhlobo ezahlukahlukene zento kuyo, uma ufuna ukuthumela komunye, akufanele uzikhethe ngoba zenziwe ngokukhetha kwenziwe kwasebenza kuphela uthathe / unamathisele.

3. Amamephu 1: 100,000

Kule nkinga, akukho lutho olushintsha ngaphezu kwesikhala, i-1.5 degree ihlukaniswe yaba izingxenye ezintathu, ngakho-ke ihlala i-0.50 x 0.50.

I-4. Amamephu we-1: 50,000

Akunakuphikwa ukuthi ungqimba olulandelayo luhlukaniswe ngezigaba ezingama-0.25 x 0.166667, ngoba siluhlukanisa lube yi-2 x 3 matrix, njengoba kubonwe emphumeleni wokugcina. Izendlalelo ziboniswa ngakwesokudla, ngaphakathi kwefolda nangaphansi kwazo ngaphakathi kwemephu, njenge njengoba sikuchazile ngolunye usuku.

Futhi lokhu kuyoba kanjani ku-Google Earth, singakwenza konke ngesikhathi esisodwa, nendawo yonke, kungakhathaliseki ukuthi akukahle ngoba sizodinga ukuguqula ku-UTM futhi lokhu kwenziwa ngezendlalelo ezihlukaniswe indawo.

Kuyinto ehlekisa ukuthi ifayela le-Manip .map equkethe zonke izendlalelo, izinyathelo nje ze-85 kb ne-Google Earth 59 kb.

Lapha ungakwazi ukulanda ifayela ku ifomethi for GIS Manifold futhi .kmz ye-Google Earth.

Ekugcineni, ukwenza lokhu ngaphandle kweGoogle Earth bekuzodinga isikhathi esiningi sokubheka okungaqondakali nokungabaza ngephutha elibi. Izithombe ze-Google ngeke kube okulungile, kodwa njengethuluzi lokufundisa lingasiza kakhulu, ngokwezinga lokuthi ukusebenzisana kwalo kuthathe izinhlaka ezijwayelekile ezinhlotsheni ezingaphansi kwezingubo zehhovisi.