Hi All
I have a system (running beautifully and quickly on OS X.4 servers) with a
complete GIS/GRASS
installation (courtesy of kyngchaos.com - thanks fo that).
I have a complete mapping system and planning system based on internal GIS data
derived from
shape files, so all data is in meters and has relevant Extents values and is
derived from shapefile
details, not WGS84 co-ordinates.
The problem I have is that I am being given GPS (WGS84) co-ordinates and need
to convert them
for use within the same data sets.
Please could someone give me an idea of how to write a process that will handle
this, or give me
some pointers (or tutorials) that will assist me to develop a solution for
myself (I need to
understand this, not just to find a solution as I need to find a 'world'
solution not just a 'local'
one.)
Some cut-down map file info is below plus a single coordinate that is similar
to the ones I need to
translate.
Can anyone help me with this?
Thanks in advance.
cheers
Biz
----------------------------------------------
Lat/Lon details:
WGS84 Latitude: 1.234567
WGS84 Longtitude: -8.234567
Mapfile details:
----------------------------------------------
MAP
STATUS ON
# Extent -50000 -50000 655619 1220290
Extent -150000 -150000 655619 1220290
SIZE 900 900
SHAPEPATH "/xxxxxxxxxxxx/osdata/export_wgs84/"
FONTSET "/xxxxxxxxxxxx/book_src/fontset.txt"
IMAGECOLOR 128 128 200
WEB
IMAGEPATH "/xxxxxxxxxxxx/osdata/tmp/"
IMAGEURL "/xxxxxxxxxxxx/osdata/tmp/"
END
PROJECTION
"init=epsg:4326"
END
LAYER
NAME "Pointers"
EXTENT -50000 -50000 655619 1220290
STATUS on
# TRANSFORM FALSE
PROJECTION
"proj=latlong"
END
TYPE point
LABELITEM "NAME0"
CLASS
NAME "Pointers"
STYLE
SYMBOL "PointerBlob"
SIZE 12
COLOR 255 128 0
OUTLINECOLOR 0 0 0
END
LABEL
TYPE truetype
FONT "eurostyle"
SIZE 9
OUTLINECOLOR 255 255 255
COLOR 0 0 0
POSITION auto
END
END
END
END
