Yadda za a ƙirƙiri quadrants don maps na cadastral

A baya mun yi magana na bambancin tsakanin UTM da haɗin gwiwar, a cikin wannan sakon za mu bayyana yadda za a ƙirƙira taswirar tsararraki a manyan ma'auni don yin amfani da cadastre.

Idan ya zo game da ƙirƙirar taswirar keɓaɓɓen tasiri a cikin ɗaukar hoto, masu kallo suna kama da cewa aikin alloli ne yayin da masu zane-zane suka yi imanin cewa kawai don yin amfani da tsarin grid wanda sukan saba da orthogonal.

Asalin wannan layin ginshikin shine ya raba saman duniya ta hanyar 'yan meridians da makamantansu. Yi hankali, dole ne ka zabi spheroid mai nuni, saboda wannan yana bayyana girman bangarorin. Zan yi amfani da misalin Honduras, don dalilai na fahimta.

Taswirar suna karbar sikelin ma'auni, dangane da buga waɗannan duk akan zancen zanen 24 ″ x36 ″, don haka lokacin da muka yi amfani da sikelin za mu koma ga wannan adadin wanda za a iya saukar da taswira, ta yin amfani da yanayin kwance kamar koma zuwa takarda 24 ″ x36 ″, gami da sarari don ribace-ribace.

Honduras yana tsakanin yankuna 16 da 17, kuma ɓangaren P da aka kafa ta kwatankwacinsa, yankin da aka yiwa alama a cikin lemu yana da digiri shida tsakanin daidaito. Lokacin buga taswira na wannan yankin, sikelin ya kasance 1: 1,000,000

Kuna iya gani sosai cewa wannan yanki na lemu yana fitowa daga 84W zuwa 90W meridian kuma tsakanin 8N da 16N, saboda haka yanki ne na digiri 6 a longitude da digiri 8 a latitude. Har ila yau, zuwa canza ra'ayi Don haɗin UTM zaka iya ganin angles.

Ta rarraba wannan yanki zuwa sassa hudu muna da sassan 4 na 3 ° na 4 °, bugu da wadannan taswira suna kusa da 1: 500,000; Ana iya sauke wannan a cikin tsari na vector (kml, shp, dxf, dgn) don wurare daban-daban daga wannan haɗin.

Idan an raba wannan kashi zuwa biyu a tsaye, kowane ɗayansu zai zama 1 ° 30 'a longitude da 1 ° a latitude. Za a buga waɗannan taswira a 1: 250,000.

Sannan idan ɗayan waɗannan yankuna ya kasu kashi uku a kwance kuma a tsaye biyu zamu sami yankuna na 30 'longitude da 30' latitude, waɗannan za'a buga su a kusan mizanin 1: 100,000.

Sannan idan muka raba daya daga cikin wadannan yankuna zuwa sassa biyu a kwance da uku a tsaye, za mu sami wuraren da ke da tsawon 15' longitude da latitude 10' kuma wadannan su ne taswirorin da aka fi sani da "cartographic sheets" 1: 50,000.

To, idan muna so mu zana taswirar nazarin yanki na 1: 10,000 ya isa mu raba wadannan sassan 5 na tsaye na 3 'na longitude by 2' na latitude; Bayyana cewa bisa ga latitude da muka samu, ana iya raba shi zuwa 4 x 4, saboda yayin da yake motsawa daga madaidaicin ya narke.

Don fitar da 1: Taswirar 5,000 zai zama sassan 1´30 ″ ta 1´, don 1: 2,000 taswira cikin sassan 36 ″ ta 24 ″ kuma don 1: Taswirar 1,000 zamu raba shi cikin sassan 18 ″ ta 12 Lat Latitude.

Idan muka duba, babu wani daga cikinsu yana buƙatar zagaye, domin za'a iya ƙidaya sasanninta a cikin haɗin gwargwadon wuri kuma sun koma UTM don zana su a taswirar. Don sauyawa haɗin gwiwar zuwa UTM akwai aikace-aikace.

Manufa ita ce farawa daga takaddar 1: 50,000 waɗanda sanannu ne kuma suna lissafin haɗin UTM sannan kuma sanya bangare a cikin AtoCAD. Misalin da aka nuna shine Honduras, tare da zanen gado 1: 50,000 a cikin babban layin wutar lantarki da kuma 1: 10,000 a cikin ƙaramin grid.

Daga cikin mutanen?? Zai zama wata rana.

A cikin wannan sakon kuma an yi irin wannan aikin ne, tare da yanayin kudancin kudancin, musamman da Bolivia.