[postgis-users] Adding a custom projection

[Pavel Iacovlev]

Good day all

My country has the following coordinate system MOLDREF 99:
# MOLDREF 99
<100099> +proj=tmerc +lat_0=0 +lon_0=28g24m +k=0.99994 +x_0=200000
+y_0=-5000000 ellps=GRS80 +units=m +no_defs

This is proj4 definition, now I need to add this projection to Postgis and I
don't understand some parameters like:

AUTHORITY - ?
UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]] - ?
PARAMETER["scale_factor",0.9999] - this is "k" i guess , correct ?
PRIMEM - I know what datum and projections are, what does PRIMEM stands for ?

Thanks in advance, Ue.

-- 
The future is open
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