Functions

The Compass screen is shown when the device is lying flat:

The green line should point to your direction. The red line points to the magnetic north. Green dots represent satellites that are used in the fix of you GPS position. Yellow dots are satellites in view but are not used in the fix.

The large white dot in the middle is indicating if the surface is level. If the horizontal plane is tilted the white dot will be out of the center.

In the green text, the following subjects are shown:

• • Fixed/Total satellites in view

  • Magnetic north course

  • Variance of your current position. Also called Declination. This is the difference between Magnetic North and Geographic North

  • Course on ground according to the GPS signal

  • Drift is the difference between Magnetic course (also take account of the Variance) and the GPS course. This should be 0 (zero), except when you experiencing sideway displacements, due to currents e.g.

  • The Lat/Lon of your GPS position

If there is no GPS fix found yet, only the “Fixed/Total satellites in view” can/will be shown.

The Camera screen is shown when the device is vertical, in portrait or landscape style.

Holding the device pretty vertical, a green horizon line is drawn and should be exactly on the real horizon of the camera image. Even if the camera is tilted the green artificial line should stay on the real horizon.

On top of the screen the compass degrees are shown: 0=north, 90=east, 180=south and 270=west and 360=north again.

All waypoints of the current collection will be shown. If the distance is more than 10 nm, a blue dot is painted, without name; the further away the smaller dot. If the distance is shorter, a green cross is displayed along with the waypoint name and the distance. The map hotspot is displayed red.

This is the main part of the application. The screen is filled with “tiles”, that are images of 256x256 pixels.

These images have to be downloaded once. WptView will cache them locally on your device.

It is possible that different “layers” will be placed on top of each other. The bottom layer is not transparent, but the second layer should be partial transparent.

In the initial screen of Amsterdam on top of a bottom layer a sea map is shown. The buoys are displayed on top in a transparent layer. Because the space between buoys is transparent, the bottom layer is visible. Actually 2 layers are displayed.

With one finger you can “drag” the map to another position

With two fingers you can zoom in (a level deeper whit more details) or zoom out (showing a larger area with less detail)

There are 20 zoom levels numbered 0 to 19, where the 0-level shows the world in one tile and on level 19 an area of 75x75 meter is shown as one tile of 256x256 pixels.

GPS fix: Between brackets the number of satellites used in the GPS fix and the total number of visible satellites is shown. Also the last known Elevation (Height in meters) is displayed.

BRG or bearing is the compass course from your position to the chosen waypoint.

DST of Distance is the length from your position to the chosen waypoint, in nm, km, mile or meter.

XTE or Cross Track Error, is the length besides the shortest path to the waypoint, when you choose it.

SOG or Speed on Ground, is your current velocity in kn, kmh, mph or meter-per-second.

VMG or Velocity Made Good, is the part of the Speed directed to the waypoint.

TTG or Time To Go, is the estimated time to reach the target waypoint (derived from DEST/VMG).

ETA or Estimated Time of Arrival is the timestamp you will reach the target waypoint (NOW+TTG).

Now shows the current time and the Last Fix time shows the last GPS fix occurrence.

A waypoint has a name, latitude and longitude and may have an elevation or height. Waypoints can be cities, points of interests, buoys, shops etc.

There can be a lot of waypoints in a collection. Each collection is stored in a seperate file on your device.

After installation of wptView 3 collections/files are available.

• A collection with all mountains of the Alps above 3000 meter. (more than 500 waypoints)

• All buoys of the 24-hours sailing regatta of 2015. (64 waypoints)

• A demo collection containing just 1 waypoint of Amsterdam, which will be the current collection.

The current collection will be used to be displayed on the Camera screen and the Map screen.

Waypoints will be displayed in the Waypoint screen in a table up to 50 waypoints per page. You can flip to the next or previous page by pressing the “>>” and “<<” button.

After selecting a waypoint or row from the table it is possible to:

• Edit the fields of a waypoint

• Remove, delete this waypoint from the collection

• Duplicate, the selected row will be duplicated.

• Goto on Map; leave this screen and show the waypoint on the Map screen

Lots of settings or preferences can be set to your convenience