Ungashintsha kanjani ibalazwe kusuka ku-NAD27 kuya ku-WGS84 (NAD83) nge-AutoCAD
Ngaphambi kokuba sikhulume ukuthi kungani endaweni yethu, iningi le-cartography endala i-NAD 27, ngenkathi ukuthambekela kwamazwe ngamazwe kusetshenziswa i-NAD83, noma abaningi bayibiza i-WGS84; nakuba bobabili empeleni bahlelwa ngendlela efanayo, umehluko uvela ku-Datum kuphela (ahluke kuphela egridini le-UTM).
Abaningi ungenele ukudideka esabekayo bekholelwa ukuthi ibalazwe kuphela okufanele washukunyiswa vector, esimweni Honduras emaqabungeni cartographic lithi 202 6 amamitha enyakatho nasempumalanga amamitha; Kuyacaca ukuthi lena singasebenza imisebenzi zendawo, Nokho ngokwenza reprojection njengoba kufanele kube, isofthiwe kwenza uchungechunge geodesic imisebenzi ekushintsheni ellipsoid ibalazwe lapho bonke emavetheksi zihanjiswe ku kugridi value hhayi njalo, ngakho-ke ngeke ihlukaniseke kumephu "esanda kususwa".
Kungenziwa nge-Microstation Geographcis, i-ARCGis noma nge-Manifold; kulokhu sizobona ukuthi sikwenze kanjani nge-AutoCAD Map3D. Ngizosebenzisa lokho enginakho (i-Map3D) ngesiNgisi ngakho-ke sizozama ukugcina amagama athile njengoba ekhona kumamenyu nezinkinobho nanjengoba umngane uCADGEEK ehlongoze ekuqaleni. Kufanele wazi ukuthi i-AutoCAD Land Desktop ne-AutoCAD Civil 3D, ngaphambili ibalazwe le-AutoCAD lagcina luba yilolu hlelo i-AutoCAD ebiza iMap3D, inqubo ayikashintshi izinguqulo ezahlukahlukene.
Siqala ngokukwenza ngebalazwe elingenalutho:
Nika ukuboniswa kwimephu yokuqala
I-1. Siqala umdwebo ongenalutho
2. Sisebenzisa indawo yokusebenza “yakudala yemephu,” siya kumephu/kumathuluzi/sabela isistimu yokudidiyela yomhlaba. Ngale ndlela i-dwg yethu isivele inohlelo lwereferensi, abaningi lapha abalungile ngoba babela uhlelo olusha kuphela, okungabangela idatha eyiphutha. Enkinobho ethi "khetha i-Coordinate System" sikhetha isistimu yomsuka.
3. Kulesi sibonelo, nginemephu ku-NAD27, ngakho-ke sikhetha le sistimu kunkinobho "khetha isistimu yokuxhumanisa"; Ngifuna ukudlulisa lokhu ku-NAD83, ngikwabela inkinobho elandelayo kuphaneli efanayo (umdwebo womthombo). Ngenkinobho ethi "khetha imidwebo", ifayela (noma amafayela) azonqatshwa liyakhethwa.
4. Manje njengoba imephu yethu inohlelo lokuxhumanisa, sesivula iphaneli yomsebenzi uma ingasebenzi. Kungenziwa ngomugqa womyalo we-MAPWSPACE, bese ufaka.
5. Manje kusukela "kumhloli wemephu", sichofoza kwesokudla "kumidwebo" bese ukhetha "namathisela"
6. Ibhokisi lengxoxo elivelayo lisivumela ukuthi sicinge isiphequluli ukuze sithole ifayela lokuqala, uma silitholile sisebenzisa inkinobho ethi “engeza”.
7. Ngomdwebo owengeziwe, manje sizomisa umbuzo. Ukwenza lokhu sichofoza kwesokudla "kumbuzo wamanje" kusuka kuphaneli yesiphequluli semephu, bese ukhetha okuthi "chaza".
8. Kusukela kumiphumela yephaneli yombuzo, chofoza "indawo", ngaphansi kokuthi "uhlobo lombuzo", bese uchofoza okuthi "kulungile" ukuze wamukele "lonke uhlobo lomngcele". Lokhu kusho ukuthi uma sizobheka umdwebo wokuqala ezinhlanganweni zawo, "nohlobo lombuzo" oluchazwe, sikhetha inketho "yokudweba" njengokuthi "imodi yombuzo".
9. Ngemva kokuchaza umbuzo, sicindezela inkinobho "yenza umbuzo". Uma i-AutoCAD Map 3D isiqedile inqubo, senza ukusondeza futhi ungabona umdwebo onqatshiwe.
Kuhle kokusho ukuthi abanye izinto Civil 3D ungathandi ukuhambisa ukuthi kulula, njengoba kwaba njalo endabeni ka iziza eziyinkimbinkimbi (izibalo eziningana, irekhodi) noma lezo zifana iziqhingi (ezinemigomo phakathi kwemigomo); lezo ezingcolile ngokweqile ezinjengezo ezakhelwe nge-smartline nezinye izinkinga. Ngokuvamile zivimbela noma amaqoqo okudinga ukuxhashazwa ngaphambi kokulahlwa.
Nge: I-CAD Geek Blog
Siyabonga, futhi sizama ukubona ukuthi lokhu kuyiqiniso
Sanibonani nonke, ngisanda kuqala ukusebenza ku-AutoCAD Map 3D (yona eza ku-AutoCAD Civil 3D Land Desktop Companion) futhi ngidinga ukusebenza kuma-orthophotos avela ezweni lami (eGuatemala) inkinga ukuthi ngidinga ukudala ukubonakala kwami ngoba sengivele nginezincazelo ezidingekayo ukuyilungiselela, uma othile azi ukuthi angakwenza kanjani lokho noma uma enombono ngingakujabulela kakhulu, ngiyabonga kakhulu… ..
Isifundo esihle kakhulu ... futhi okuphambene nalokho? Uma nginemininingwane ku-WGS84 futhi nginamapharamitha wendawo ukuguqula ngibe i-datum yendawo.
Enkambisweni yezinhlelo zokuxhumanisa, imingcele ingangeniswa kuphela kusuka ku-datum yendawo ku-WGS84. Ingabe ikhona indlela yokwenza?
Ngomuntu siqu, ngibhale imingcele ngaphansi kwe-model ye-Bursa-Wolf, kodwa angazi uma i-Autocad Map isebenzisa ukulingana okufanayo.
Ngiyabonga kakhulu
ngiyabonga ngosizo lwakho g! Ngizokwenza ukuhlolwa okunye futhi ngikutshele imiphumela.
Nge-Microstation:
Okokuqala kufanele nika ukuhlolwa ku-dgn yakho, ukhethe indawo ye-UTM i-16 North, ne-datum enolwazi.
Bese ukhetha umyalo osekuvele uletha i-Microstation efakiwe, ukuthumela ku-kmz, yena ngokwakhe uguqukela endaweni yezwe futhi ukhetha i-wgs84 datum
Ngikuxwayisa, ngoba lokhu akukusizi kuphela i-Microstation XM, ithatha i-Bentley Map noma i-Microstation Geographics
Nge-AutoCAD:
Ngaphambi kokulwa ne-Civil 3D, kufanele ubuke isandiso esivela ku-AutoDesk ekuthumeleni amamodeli angama-km kuya ku-kml
http://labs.autodesk.com/utilities/google_earth_extension_beta/
Sawubona Ngingu saqala emkhakheni ukusebenza amabalazwe XY uhlela noma kube flat uma Ngisebenza MicroStation MX noma AutoCAD Map3d njengoba convierto latitude longuitud, bese udala ifayela le-KML futhi ukubuka ifayela yami ku-Google Eart yangakithi UTM kuyinto 16 Ngivela e-El Salvador, ngiyabonga ngokusekela kwakho.
Ngidinga uhlelo olwenza i-utm mesh ngokuzenzekelayo kufayela le-Autesk Map le-3D, leyo enganginayo yenguqulo yangaphambili, idala iphutha futhi ishiya isicelo
mmm Angicabangi ukuthi ngiletha ithuluzi laleyo njongo
Bengibhekisela ekudwebeni ngokuzenzakalelayo nge-autocad imephu ye-3d
Sawubona Geobruu, kulokhu okuthunyelwe ichaza ukuthi ungayakha kanjani ... kwezinye zezixhumanisi kokuthunyelwe umqondo uchazwa ukuze ukuqonde.
imikhonzo
Engingenakukwenza ukudweba imigqa emele isimiso sokuhlela i-utm
Ngisebenzise lezo izinhlelo eziletha ngokuzenzakalelayo; isiphakamiso esinikezwe yendawo yasendaweni yendawo i-vector displacement kodwa ngokuzikhandla akusebenzi kahle ngoba njengoba izindlela ezihamba phambili zisondela ku-equator izinguquko ze-vector vector.
Kwenzekani yilokho okwenzeka eHonduras, izwe lonke liwela ngaphansi kwendawo efanayo (16) kanye nengxenyana encane endaweni ye-15.
Ekugcineni, uma kuqhathaniswa izindlela zombili, ukungafani okungamamitha ayisentimitha kuyatholakala endaweni engaseningizimu (njengoba izibalo zithuthukela e-equator)
Kulungile, manje kuyacaca.
Esikhathini esithile sendawo yakho, ingabe uke wabhalela imingcele yakho yokuguqula, noma usebenzisa lezo ezihlinzekwe yiNsizakalo yeGenographic ehambisanayo noma ingabe usebenzisa ngokuqondile lezo ohlelweni ngokuzenzakalelayo?
Okusho ukuthi, imiphumela yenguquko iqondile, ngayiphi i-oda, noma i-approximate kuphela (amamitha amaningana)?
Yebo, ngangididekile, ngazama ukukucacisa.
esithombeni sokuqala, ephaneli efanayo, ekukhetheni kokuqala esikhetha uhlelo lwesimiso futhi okwesibili uhlelo lokuya kuyo, bese inkinobho yokukhetha umdwebo, sithatha imephu esiyifuna ukuyihlaziya.
Engingakuqondi noma engizakuboni lapho uchaza khona uhlelo lokuqala lwe-NAD27.