A client has a very old Certificate of Ownership document for a plot of land. We need to show the outline of the plot on Google maps to potential developers.
Sadly the description of the plot is in archaic coordinate system. How do I get this represented on Google maps?
Here is an additional piece of information I could scrape from the document:
Those are some form of coordinates for point A.4589 in the diagram.
Seems I've made some good progress
You need to know the coordinates of at least one point in lat/lon degrees. If you don't have any surveying points, you might take coordinates from a GPS unit if the point is visible.
Using QGIS, you could create the other points of the polygon with the Azimuth and Distance Plugin. Take care to convert the degree-minute bearings into decimal degrees.
With the additional Information, it is easy to locate the points next to the Abuja-Kaduna Highway. I have taken the Nigerian Minna Datum with UTM 32N EPSG:26332. The accuracy of the Minna datum is reported to be about 3 to 6 meters.
For use in Google Earth, you can convert the corner points into KML format in a last step:
<?xml version="1.0" encoding="utf-8" ?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document id="root_doc">
<Folder><name>corners</name>
<Placemark>
<name>A.4589</name>
<MultiGeometry><Point><coordinates>7.213681182925083,9.242681685792601</coordinates></Point></MultiGeometry>
</Placemark>
<Placemark>
<name>A.4590</name>
<MultiGeometry><Point><coordinates>7.21464061889053,9.244143155822583</coordinates></Point></MultiGeometry>
</Placemark>
<Placemark>
<name>A.4591</name>
<MultiGeometry><Point><coordinates>7.215811177177327,9.243701475697776</coordinates></Point></MultiGeometry>
</Placemark>
<Placemark>
<name>A.4592</name>
<MultiGeometry><Point><coordinates>7.215774243544854,9.242327697539729</coordinates></Point></MultiGeometry>
</Placemark>
<Placemark>
<name>A.4593</name>
<MultiGeometry><Point><coordinates>7.214939943530562,9.242397736493757</coordinates></Point></MultiGeometry>
</Placemark>
</Folder>
</Document></kml>
There is a free online tool at Underhill's map check page
I used your metes data, but started at A.4589 (the one with known coordinates) and got these results (the remaining point numbers are assumed to increase by one each time, and luckily they do match the raw data numbering):
Azimuth Distance Pt# Northing Easting
4589 22054.320 3837.680
33 24 00 193.000 4590 22215.446 3943.923
111 05 00 137.600 4591 22165.947 4072.312
181 49 00 152.010 4592 22014.014 4067.493
275 07 00 92.010 4593 22022.220 3975.849
283 06 00 141.800 4589 22054.359 3837.740
Misclosure 0.039 0.060
Precision 1 : 10085
Area = 31432.0
An actual screen shot:
These are the coordinates from Ukwu-Oba that have been planted. Pt"A"(1) 6.11931381N 6.50480513E or Lat.6° 03'23."N Long.6°.30'26.8"E pt.(2) 6.0571400N 6.5071078E and 6°.03'16.7"N 6°30"25•6'E pt(3)6•0568894N 6•5076962E (pt4)6•056840N 6•508229E .(pt5) B∆~start to C∆6•054706N 6•510544E C2;-6•059036N 6•510204E close up to Highway. Adonte Rd. Start D to A 6•056184N 6•506191E (2)6•054366N 6•504388E D3~6•051124N 6•506296E D4~6•051246N 6•509158E loop to C, and A.end. 6°03' 23"•0N 6°30'26"•8 E. Loop closure.
