attached you can find a list of EPSG-codes, which are used in german mapping agencies.
Best regards, Sven
Landesamt für innere Verwaltung Mecklenburg-Vorpommern
Amt für Geoinformation, Vermessungs- und Katasterwesen
Lübecker Str. 289
Tel.: 0385 588-56322
Fax: 0385 588 482 56039
for Slovenia we use:
3912 ; SI-D48, Slovene National Grid, »old« but still mostly used
3794 ; SI-D96, Slovenia 1996 / Slovene National Grid, new and should be used (ETRS89)
It would be great to have them in LAStools.
That is very good news to incorporate more epsg codes.
For Belgian users, we could use the EPSG 31370 for the Belgian Lambert 72 CRS.
An important issue is the +towgs84 parameters which is necessary for datum conversions between Belgian datum 72 and ETR89 (WGS84) and vice versa. To make things more complicated the signs of the +towgs84 parameters has to change whether you do a datum transformation from WGS84 to Belgian datum 1972 or from Belgian datum 1972 to ETRS89 datum.
Another complexity is the sign of the rotation parameters which can change depending on the use of the coordinate frame transformation convention (positive counterclockwise – mainly used in the US) and the Position vector transformation convention (mainly used in Europe and also In the epsg codes). It is crucial that sign convention is conform the algorithm in the application.
From ETRS89 datum to Belgian datum72 in Position vector transformation : towgs84= 106.869,-52.2978,103.724,-0.33657,0.456955,-1.84218,1
ð These are the parameters that the epsg database uses
From ETRS89 datum to Belgian datum 72 in Coordinate frame transformation : towgs84= 106.869,-52.2978,103.724,0.33657,-0.456955,1.84218,1
From Belgian datum 72 to ETRS89 datum in Position vector transformation : towgs84= -106.869,52.2978,-103.724,0.33657,-0.456955,1.84218,1
From Belgian datum 72 to ETRS89 datum in Coordinate frame transformation : towgs84= -106.869,52.2978,-103.724,-0.33657,0.456955,-1.84218,1
A third complication is that the National Geographic Institute of Belgium uses parameters (with coordinate frame transformation convention) with more detail than the ones in the espg code:
So in the end it would be very helpful to choose an epsg code but to have the ability to manually modify the towgs84 parameters (the signs for whatever transformation convention you want). But in the first place, will lastools be able to use the towgs parameters for datum shifts in the future or to manually introduce it?
Afdeling Geodiensten – Dienst IT/Development
Vrijdag 4/5de verlofdag
Could you add EPSG:28992 (amersfoort / RDnew) for the Netherlands?
EPSG:2193 - (NZGD2000 / New Zealand Transverse Mercator 2000) covers the North and South islands of New Zealand and would be a useful addition.
Scientist, Forest Operations and Management, Scion
Support for the "Norwegian Transverse Mercator" zones and the Norwegian vertical references would be great.
We are converting to NN2000, but both will be used for some years more.