About Coordinates
RSLog uses coordinates to insert the project or borehole location on a map. Various coordinate types supported by RSLog are listed below. Please note that coordinate system is defined at the project level when you create a new project:
- Geographic (WGS84): This coordinate system uses Latitude (specifies the north–south position of a point on the surface of the Earth) and Longitude (specifies the east-west position of a point on the surface of the Earth). In RSLog when you place a point (borehole or project location) on the map, RSLog automatically saves the Latitude and Longitude of that point in the database. Alternatively, you can enter these coordinates manually.
- Local: In this system, user enters X and Y of the point relative to a local datum. Since this datum is unknown to RSLog, the program will not be able to utilize any GIS features (maps, cross section, etc) for these points.
- Universal Transverse Mercator (UTM): UTM is a map projection system for assigning coordinates to locations on the surface of the Earth (Wikipedia). In addition to Easting and Northing (m), you need to specify the UTM Zone of the project site in order to be able to locate a UTM point on Earth. User can specify the UTM Zone of a project either at the time of creating a project or can choose them from the Settings page. RSLog can automatically detect your UTM Zone if Location Services is on (see below).
When user enters UTM coordinates, RSLog internally converts these coordinates to Latitude and Longitude so the point could be shown on a map when necessary.
Location Services
A location-based service is a general term denoting software services which use geographic data and information to provide services or information to users. During login to your RSLog account the Internet browser will ask you for permission to activate Location Services (see below). This allows RSLog to use your location when placing a borehole on a map or for calculating your UTM Zone automatically.
If you change your mind, you can always remove Location Services from the settings page of your browser.
