 |
|
|
|
What is New
 Support of routable maps with voice turn-by-turn navigation! |
v. 2009, Build 6.6 |
 |
Mapwel -
custom GPS mapping software for Garmin GPS units -
free demo
MAPupload
(allows to add your map to maps in GPS
memory) |
 
|
|
|
|
|
Home | Main Features | Demo Version | Download | Purchase | Purchase via PayPal | FAQ | Contact | Links |
|
Maps for Garmin GPS units are in vector format.
Therefore, files exported from Mapwel for GPS are in the vector format too.
However, raster images are often used in Mapwel as a template for automatic or manual creation
of vector data. Raster image must be georeferenced (calibrated) so that vector
data created on top of the image have proper real world's coordinates. Some
raster image files already include georeference information like projection (a method of
representing the earth's surface on a plane) and map datum
(a reference from which the measurements are made). Raster
images without georeference information or with information not supported by
Mapwel must be manually georeferenced with calibration tool. Mapwel supports following types of georeferenced raster images: GeoTiff files are raster images in TIFF format with embedded georeference information like tie points, transformation matrix, projection method and parameters, ellipsoid and datum code. Mapwel supports import of GeoTiff images (main menu > Image > Import GeoTiff Calibrated Image) and automatically calibrates them with use of the georeference info. Current version of Mapwel supports about 50% of all datums defined by GeoTiff specification, including the most frequently used WGS84, WGS72, NAD83 and NAD27. Mapwel supports following projection methods in GeoTiff files:
*.MAP files are text files that contain information for
georeferencing of the raster image. Link to the raster image is
included in the *.MAP file. Georeference info in a *.MAP file includes map projection, datum and 2 or more calibration points. Current version of Mapwel supports almost all datums supported by OziExplorer and the following projections and projection methods:
|
Georeferenced Images