Frequently Asked Question

Q. What is the format of the .gpm format used for images by gpMapper & PAM?

A. Fairport Image Import Description File

Same file name as Image, but with extension ".gpm" (gpMapper)


$gpMapper

Global
{
Description=My Aerial Photo
CreatedOn=30/03/2001 8:40:49 am
Transparent=0
TransparentColor=0
}

Coordinates
{
Datum=WGS84
East=116.049122117874
West=115.971103427245
North=-28.8996400981309
South=-28.9457916975794
}


-> First line "$gpMapper" to identify as a gpMapper import file.

-> Entries within the { } section may appear in any order.

-> Global Section

Description - Description of image
CreatedOn - Optional date & time that file was created
Transparent - non-zero to indicate that image has transparency
TransparentColor - rgb value indicating which color represents transparency

-> Coordinates Section

Datum - Prior to 2.2.0 (Jan 2002), only WGS84 supported, thereafter AMG84,MGA94,AGD66,AGD84,WGS84 & GDA94 supported. WGS84 is recommended, as this is the native coordinate system of gpMapper, and would need no conversion. If using UTM coordiantes (e.g. AMG84, MGA94) you will need an extra parameter in the Coordinates section .. Zone=#

East/West/North/South - Coordinates of extremities of image