Projecting Lambert_Azimutal_Equal_Area on mapinfo 5.5!

148 views
Skip to first unread message

justine

unread,
Nov 17, 2008, 7:35:00 AM11/17/08
to MapInfo-L
Hi,

I'm a little out of my depth here and I'm wondering if someone can
help me,

I have some shapefiles that are from
http://dataservice.eea.europa.eu/dataservice/metadetails.asp?id=839
of regions of europe and they are in lambert azimutal equal area
projection, but i dont have this in my list of projections to choose
from.

I've tried creating a new one but get very stuck very early on as the
correct datum D_ETRS_1989 isnt in my manual, so I'm guessing it isnt
supported.

Can someone please help me figure out the correct numbers for my
mapinow.prj file? my knowledge of mapinfo is open it run the data
through the program and save the window as I've never had to do
anymore than this as the data usually comes to me in the correct
projection for the final output.

ETRS - Lambert Azimutal Equal Area
Datum -D_ETRS_1989
Ellipsoid - GRS_1980
Semi-major axis -6378137
Axis units - degrees
Flattening ratio - 3.35281068118232E-03
Projection - Lambert_Azimutal_Equal_Area
False easting - 4321000 meters
False northing -3210000 meters
Central median - 10 degrees
Latitude of origin - 52 degrees

Thanks

Uffe Kousgaard

unread,
Nov 17, 2008, 7:48:32 AM11/17/08
to mapi...@googlegroups.com
Hi,

Add this line to mapinfow.prj file in the "--- Azimuthal Systems ---"
section:
"Lambert Azimuthal Equal-Area (LAEA5210)", 2029, 115, 7, 10, 52,
90, -4321000, -3210000, 4179000, 4290000

False easting/northing is not applied, since MapInfo do not support that for
the Lambert Azimuthal Equal Area (LAEA) projection.

Instead you will have to import the SHP file to MIF format (using Universal
Translator) and then edit the MIF file this way:

Correct coordsys to this:
CoordSys Earth Projection 29, 115, "m", 10, 52, 90 Bounds
(-4321000, -3210000) (4179000, 4290000)

Add a transform clause after the coordsys:
Transform 1,1,-4321000,-3210000

Now import the MIF file to TAB format.

D_ETRS_1989 should be the same as Euref89.

Some of the above may not be supported in version 5.5, if so you will
probably find out.

I hope this helps you.


Regards
Uffe Kousgaard

justine

unread,
Nov 17, 2008, 7:57:53 AM11/17/08
to MapInfo-L
Thanks for you help Uffe,

I get an error message when selecting the new projection in the
universal translator saying 'invalid projection type :29.'

I guess this is the part thats not supported in 5.5!

I think i'll have to ask the client to change the projection and send
me something that I can use.

justine

unread,
Nov 17, 2008, 6:34:23 AM11/17/08
to MapInfo-L

justine

unread,
Nov 17, 2008, 8:35:01 AM11/17/08
to MapInfo-L
I gave it a go (with my fingers crossed) even though it said the error
but it didn't work as when i imported the mif to a tab it said the
same error invalid projection type: 29

Kostas

unread,
Nov 17, 2008, 1:00:59 PM11/17/08
to MapInfo-L
i am having the same problems with EEAs projection. i am trying to
open a TIFF raster file but i get a blank map. I dont know if the
problem is the projection or the raster itself.
Anyway maybe what you can do is to export your file in Arc in a
different projection supported by Mapinfo.
Reply all
Reply to author
Forward
0 new messages