Nigeria Surveyor and Geo-spatial Professional

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Nigeria Surveyor and Geo-spatial Professional

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Members: 6
Latest Activity: Aug 18

Land Surveyor Forum - Community Discussions

Cadastre and GIS

Started by Akinboye Ogunola. Last reply by Akinboye Ogunola Aug 9, 2016. 3 Replies

Some oo some Surveyors see Cadastre and Gis and Cadastre fusing and serving the same role in the current technological disoensation. What are menbers views of this thesis?

Cadastre and GIS

Started by Akinboye Ogunola. Last reply by Akinboye Ogunola Aug 9, 2016. 2 Replies

Some or many Surveyors see GIS and Cadastre fusing.

Tags: Cadastre, GIS

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Reply by Oluwafemi Muyideen Olaiya on August 18, 2017 at 12:36pm
Most important factor to consider that could be the course is zones (utm zones)
Reply by Oluwafemi Muyideen Olaiya on August 18, 2017 at 12:36pm
Most important factor to consider that could be the course is zones (utm zones)
Reply by Oluwafemi Muyideen Olaiya on August 18, 2017 at 12:35pm
Most important factor to consider that could be the course is zones (utm zones)
Reply by Oluwafemi Muyideen Olaiya on August 18, 2017 at 12:20pm
The prism constant either four years or more couldn't have been the factor.

I will suggest you look at factors such as:

Control Points/Geodetic Datum: did you guys carried out new surveys reference to the same control points/geodetic datum as the previous survey?

Did you carried out check on control points:If yes to the above, was the control points used in situ (meaning in good conditions as same as four years ago)?

Instruments Testing: did you guys confirmed the good conditions of both the previous instruments used for old survey and the one used for the new survey?

What was the discrepancy of the old one to the new one in meters? So that we can further get to the root of the course if all the above factors weren't the course
Reply by Allen Harrison on August 18, 2017 at 9:42am

Hi, i have a question can hopefully you can answer me, am working on a project and we have a topographic map which was done by a survey consultant company 4 yrs ago, but one of our senior surveyor is saying that these points are not correct and we have to do topo of that area again because the coordinates are not matching with his, i thought is it possible that the prism constant might be different when topo was done 4 yrs ago than what prism we are using, please tell me if am right or wrong and also please tell me what factors affect the points of topo or any survey.

Reply by Oluwafemi Muyideen Olaiya on August 3, 2016 at 3:54pm
It is great having you here Surv. Akinboye Ogunola.
You are highly welcome and we are looking forward to you contributions and wealth of knowledge you have accrue over 3 decades in the field of Surveying and Geospatial Science.
Once again, you are welcome sir!
 

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