Kuskure mafi sauki a lokacin gina gwanin zane-zane: A bangare daga taswirar

Ina so in sadaukar da wannan post ɗin zuwa babban kuskure mai sauƙi don aiwatarwa, akasarinsu a cikin 1: 10,000 da 1: 1,000 taswirar da aka yi amfani da su don dalilai na cadastral waɗanda aka ɗauka daga 1: 50,000 raga.

Ka tuna cewa a cikin gidan da muka gabata mun ga yadda samar da wannan raga, kuma a baya mun ga yadda tafi farawa har sai kun isa zuwa taswirar 1: 1,000. Amma kuskure mafi sauki shi ne gaskanta cewa wannan raga za a iya karyewa akan taswira, kuma wannan ba daidai bane. Dole ne a samar da daidaituwa ta amfani da latitude da longitude kowane lokaci da muke son ƙirƙirar raga mai yawa kuma idan ba mu ga sakamakon ba.

Idan wannan yanki ne na 6 ° longitude ta 8 ° latitude, daidai da yankin 16, samar da haɗin UTM mai sauƙi ne kuma aika shi zuwa AutoCAD. A ce wani ya haukace yana tunanin cewa za'a iya yanke wannan raga daga taswirar:

Wannan bangare, ba tare da yin lissafin tsaka-tsakin ba, aljihun zai bude har sai ya isa tsakiyar inda zai samar da bambance bambance na mita na 2,318.63 na latitude.

Lokacin yin ɓangaren da ke gaba, za a haifar da irin wannan kuskuren, amma za'a rage shi kamar haka:

1: 1,000 (6 °): babu bangare

Rarraba 1: 500,000 (3 °): 2,318.63

Rarraba 1: 250,000 (1 ° 30´): 579.76

Rarraba 1: 100,000 (30´): 129.00

Rarraba 1: 50,000 (15´): 16.13

Abubuwan dabi'un suna tsakanin bangare da wanda ke kusa, don haka ya danganta da sau nawa suka rabu, an tara sakamakon ƙarshe, wanda ya ƙare kasancewa cikakken bala'i idan mai kirkirar zane ya bita da aikin.

Hakanan mun ga cewa idan muka raba takardar 50,000 don cire raga na 10,000 zamu sami kuskure a ƙarshen tsakiyar har zuwa mita 16 wanda don binciken kadastral na birni zai zama mummunan gaske kuma mafi muni idan ba daidaituwa ba saboda wannan kuskuren ne a tsakiyar wurin . 

Kodayake a cikin bangare na 10,000 nesa yana da ƙananan kaɗan don haka ayyukan rarrabe wannan takarda akan taswirar ya zama ruwan dare gama gari - muddin ana iya guje shi zai zama mafi kyau.

Matsalar ita ce son samar da ruwan wuta a cikin latitude da tsaran mu kamar yadda muka gani a ciki wannan matsayiDon dalilai na bugawa, amma babbar matsalar ita ce lokacin da zargi (kamar NAD27 zuwa NAD83) tare da shirin da aka yi don waɗannan dalilai, wannan zai haifar da kurakurai masu ɓarna wanda zai haifar da azabtarwa mai tsafta.