Measurement

Measurement is carried out in conjunction with a measuring device. The measured values are displayed depending on the measurement location on the map. All the measured values are stored in the database, so that user can also access the data later.

In our example we have created measurement called "Simulation 2" (Figure 1-3).

Figure 1: Main view

Explanation of the main view:

1. 1. Measurements view icon (invokes the measurement view),

2. Measurement info panel (the title of current measurement and the info about the connection to the active measurement device),
3. Start/Stop icon (starts the measurement and a long touch stops it – the icon changes accordingly - see Figure 2)
4. Center at current location icon (puts the application into a centering mode and keeps it that way so that the current location is always at the center of the view - touching or sliding the map automatically disables this mode),
5. Satellite / Topo map switch icon (toggles the map display between a satellite view and a topographic view),
6. Print screen icon (a long touch starts a print screen operation - an image of the current view along with the measured data in surfer-ready files (excel table + base map) are recorded and zipped in the same file - when the operation is complete, the application offers the user to share the created file - the file is also stored on the device under the /RouteMonitoring/screenshots/ folder),
8. Averaging area (the measurement points will be averaged and presented as one point as long as your location remains within the averaging area circle),
8. Current location indicator (indicates the current location of the android device),
9. Active color scale,
10. Info panel where all data about current location and current measurement are displayed (see Figure 3) and
10. Main menu icon.

Figure 2: a) start measurement b) stop measurement (long press on button is required to stop).

Currently measured values are shown on the info panel (Figure 3).

Figure 3: Data of current measurement

The Current info panel shows all the current or last received data from the measurement device (Figure 3-7) and the last known geo-location data (Figure 3-8).

1. a red dot icon indicates that the application is connected to the measuring device and is collecting data from it,
2. a red satellite icon indicates that the GPS location might be old or inaccurate,
3. a red shield indicates the application is rejecting new data due to a tight proximity to a previously recorded point (see »Minimum Distance Between Points« in the  Settings view),
4. a green arrow indicates that the application is sending data to the data server,
5. a red disconnected plug icon indicates that the application tried to send data over an internet connection to the data server, but that there was a problem sending,
6. a CF display indicates that a user changed a calibration factor in the plug-in settings for the current measuring device and that the measured value is being corrected by multiplying the received value by the CF value,
7. the collected value - modified by the CF parameter when the latter is not set to unity,
8. the number of accumulated measured points and the geo-location data, collected from the GPS or via a network provider:

N – the number of recorded values
acc – estimated location accuracy of the current location (defined as the radius of a 68% confidence circle - it is assumed that the location errors are random with a normal distribution, so the 68% confidence circle radius represents one standard deviation - note that in practice, location errors do not always follow such a simple distribution - further, this is only a horizontal accuracy estimator and does not indicate the accuracy of bearing or velocity),
the location provider is shown in round brackets
E – location longitude,
N – location latitude,
h – location elevation (this value is correct only when the application is in normal mode (not in averaging) with a GPS location provider).