Hello Jean-Fran�ois,
The message you are seeing is actually
informational only and unfortunately uses a calculated value for the 1/f. �The “true”
value, the official one you quoted, is what is used internally. �Long ago we
(I) thought it would be a good idea to log the OGC well known text for every
coordinate system – we derive this Well Known Text (WKT) from our
internal definitions).� Unfortunately, the flattening gets computed and numeric
round off ends up showing it as the incorrect value you have noticed.
We’ve recently fixed this so that
even the WKT will show the correct flattening.
So if you get a new beta from our site (we’re
at around build 1644 or so now) this problem will be gone. �But again, it was
only a cosmetic problem, internally the correct values were being used when
coordinate transformations were being done.
Dale
----------------------------------------------------------------------
Dale
Lutz
Safe Software
Inc.
[EMAIL PROTECTED]
VP Development Surrey, BC,
CANADA phone: (604) 501-9985
http://www.safe.com
fax: (604) 501-9965
----------------------------------------------------------------------
From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 23, 2005
8:43 AM
To: [email protected]
Subject: [fme]
I'm constated in my log file that the Datum WGS84 has the
value 1/f=298.257222932867. The official value (NIMA 8250.2) is
298.257223563. This problem has already reported (see message 9842, Dec 3,
2004). I have this message in build 1537 but also in recent build 2005-03-03 (I
don't remember the build number). Why? Can I Edit the predetermined Ellipso�ds
and Datums?
G�omatique, relev�s techniques et gestion des donn�es
Direction - Environnement et services techniques
Direction principale - Expertise
9e
�tage
T�l. : (514) 840-3000,
855, rue Sainte-Catherine
Est
poste 4230
Montr�al (Qu�bec) H2L
4P5
T�l�c. : (514) 840-4233
Starting Translation ...
Feature Manipulation Engine 2005 Beta (20041101 - Build 1537)
FME for Smallworld (node locked-crc)
Permanent License.
Machine host name is: PW120009
FME Configuration: Reader Keyword is `DWG_1'
FME Configuration: Writer Keyword is `DWG_2'
FME Configuration: Writer Group Definition Keyword is `DWG_2_DEF'
FME Configuration: Reader type is `DWG'
FME Configuration: Writer type is `DWG'
FME Configuration: Destination coordinate system set to `MTM84-8'
Coordinate System `MTM84-8' parameters: CS_NAME=`MTM84-8' DESC_NM=`WGS84
Modified TM Projection' DT_NAME=`WGS84' MAP_SCL=`1.0' PARM1=`-73.5' PROJ=`TM'
SCL_RED=`0.9999' SOURCE=`Department of Energy, Mines & Resources'
UNIT=`METER' X_OFF=`304800'
Coordinate System `MTM84-8' as OGC Well Known Text: PROJCS["WGS84 Modified
TM Projection",GEOGCS["WGS_1984",DATUM["WGS_1984",SPHEROID["World Geodetic
System of 1984",6378137,298.257222932867],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-73.5],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",304800],PARAMETER["false_northing",0],UNIT["METER",1]]
FME Configuration: Current working directory is `D:\Temp'
FME Configuration: Temporary directory is `D:\TEMP'
FME Configuration: FME_HOME is `D:\Systprod\FME\'
System Status: 59255MB of disk space available in the FME temporary directory
(D:\TEMP\)
System Status: 1971MB of virtual memory available
FME Configuration: Source coordinate system for reader DWG_1[DWG] set to
`MTM83-8'
Coordinate System `MTM83-8' parameters: CS_NAME=`MTM83-8' DESC_NM=`Modified TM
Projection' DT_NAME=`NAD83' GROUP=`CANADA' MAP_SCL=`1' MAX_LAT=`84'
MAX_LNG=`-71.5' MIN_LAT=`41' MIN_LNG=`-75.5' PARM1=`-73.5' PROJ=`TM' QUAD=`1'
SCL_RED=`0.9999' SOURCE=`Department of Energy, Mines & Resources'
UNIT=`METER' X_OFF=`304800' ZERO_X=`0.001' ZERO_Y=`0.001'
Coordinate System `MTM83-8' as OGC Well Known Text: PROJCS["Modified TM
Projection",GEOGCS["North_American_Datum_1983",DATUM["North_American_Datum_1983",SPHEROID["Geodetic
Reference System of 1980",6378137,298.2572221009113],AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-73.5],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",304800],PARAMETER["false_northing",0],UNIT["METER",1]]
AutoCAD Reader: Returning block inserts as points
....
Get
the maximum benefit from your FME, FME Objects, or SpatialDirect via our
Professional Services team. Visit www.safe.com/services for details.
Get the maximum benefit from your FME, FME Objects, or SpatialDirect via our Professional Services team. Visit www.safe.com/services for details.
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