₦airaland Forum

folmus:
It's your turn.

Now tell us how you did it.

I just followed his guidelines. Try it and see.

jabolo:
Yes. One of the beacons is usually identified as the reference for which these details are provided - usually in a box on the survey plan. As you know, all other beacons are determined relative to the reference beacon using the provided angles and distances, simple geometry.

The number with N goes into the Y-axis and the number with E goes into the X-axis. Click <<Transform>> and the lat/lon of this reference beacon should be calculated. Further click on the map option to see it on a map.

Hope it helps. Please note that I'm not a surveyor - i just happened to chase down this particular rabbit hole a while back and kept this knowledge filed away.

Like magic!

Took me straight to the plot! Thank you very much for this.

jabolo:
I chased this down a few years ago. It's almost like a closed shop of trade secrets.

There are many websites that help you convert geodetic datums (which Surveyors use) to lat/lon coordinates. I found out that Nigerian surveyors use the specific Minna datum (happy to be corrected!) and this link I ended up with, should do what you want.

https://epsg.io/transform#s_srs=26332&t_srs=4326&x=326432.0800000&y=1018652.7100000

You enter the input coordinates on one side and it shows the lat/lon coordinates on the other side. Even more useful, it can show you the location on a map.

Hope it helps.

Thank you very much sir. But I didn’t quite get it. What number should I enter under the input coordinates? Is it the number ending in mE and mN or the angles on each beacon points on the survey plan?

Please clear my doubts with an example if possible.

WhiteTopaz:
I’ve gained so much since I started following this thread. Big thanks to everyone.

Is there anyway to get the exact coordinates from a survey plan which can be searched on google maps?

Please I need help with this question.

I’ve gained so much since I started following this thread. Big thanks to everyone.

Is there anyway to get the exact coordinates from a survey plan which can be searched on google maps?