[Proj] Calculating +towgs84 values from source / dest .xyz file

[Mark Johnson]

Is there a c program source that can take a list of x/y/z points for a
source and destination and calculate a valid 7 parameter +towgs84 value
that could be used with cs2cs?

I found something similar at http://helmparms3d.sourceforge.net/, called
helmparms3d - but it seems calculate values that cannot be used for
+towgs84.

Mark Johnson, Berlin Germany
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.maptools.org/pipermail/proj/attachments/20170925/088378b7/attachment.htm