aboutsummaryrefslogtreecommitdiff
path: root/html
diff options
context:
space:
mode:
authorFrank Warmerdam <warmerdam@pobox.com>2002-12-12 19:59:04 +0000
committerFrank Warmerdam <warmerdam@pobox.com>2002-12-12 19:59:04 +0000
commit5272fd7c83ca75bc69663826e1c5cc3bb6fb0882 (patch)
treeed956a9e6bdfa66dcc5bf94aa5b449b2e270334f /html
parent89fbbbff7d8bf6a9ac1838adefba32e44ef58b9c (diff)
downloadPROJ-5272fd7c83ca75bc69663826e1c5cc3bb6fb0882.tar.gz
PROJ-5272fd7c83ca75bc69663826e1c5cc3bb6fb0882.zip
updated notes on towgs84 parameters
git-svn-id: http://svn.osgeo.org/metacrs/proj/trunk@1047 4e78687f-474d-0410-85f9-8d5e500ac6b2
Diffstat (limited to 'html')
-rw-r--r--html/gen_parms.html5
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>