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| -rw-r--r-- | html/gen_parms.html | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/html/gen_parms.html b/html/gen_parms.html index bc59b116..8cbaeadc 100644 --- a/html/gen_parms.html +++ b/html/gen_parms.html @@ -129,6 +129,11 @@ Seven parameter transformation (translation, rotation and scaling): z_out = M_BF*(-Ry_BF*x[io] + Rx_BF*y[io] + z[io]) + Dz_BF; </pre> +Note that EPSG method 9607 (coordinate frame rotation) coefficients can be +converted to EPSG method 9606 (position vector 7-parameter) supported by +PROJ.4 by reversing the sign of the rotation vectors. The methods are +otherwise the same.<p> + </body> </html> |