[Proj] Correction of definition of CRS EPSG 5456 and 5457

Andre Joost andre+joost at nurfuerspam.de
Mon Jan 22 11:20:19 EST 2018

Am 22.01.18 um 13:42 schrieb Andre Joost:
> Hi Eduardo,

> Even the lcc1 vs lcc2 yields different results, but I have not looked
> into that.

Got that now:

echo 5456(lcc-1SP) >>out.txt
cs2cs +init=epsg:4326  +to +proj=lcc +lat_1=10.46666666666667 
+lon_0=-84.3333333333 +k_0=0.99995696 +x_0=500000 +y_0=271820.522 
+ellps=clrk66 +towgs84=205,96,-98,0,0,0,0 +units=m +no_defs -f "%%.3f" 
CRN.txt >>out.txt

echo 5456(lcc-2SP) >>out.txt
cs2cs +init=epsg:4326  +to +proj=lcc +lat_0=10.46666666666667 
+lat_1=9.933333333 +lat_2=11 +lon_0=-84.3333333333 +x_0=500000 
+y_0=271820.522 +ellps=clrk66 +towgs84=205,96,-98,0,0,0,0 +units=m 
+no_defs -f "%%.3f" CRN.txt >>out.txt


426928.564	331056.442 34.278
426928.566	331056.443 34.278

Note that +lat_1 has a different meaning in 1SP vs 2SP, and the absence 
of +k_0 forces the lcc-2SP projection.

Andre Joost

More information about the Proj mailing list