Stig-Erland – Location aware systems

It has been a couple of weeks since last progress report due to easter vacation. However, the client has evolved and I have partly succeeded with the goal of finishing the implementation of the client.

The following functionality has been added in the easter:

• Browsable and zoomable map component which in addition supports moving in the same direction as the jogger moves.
• Saving and loading results.
• Draw the jogger and the opponent on top of the map as well as their tracks
• Calculating the distance of results and routes.

In addition, the off-course algorithm, notification of the user about the results, and the calculation of the difference in time between the jogger and the opponent have been implemented. However, these parts have not been tested, so there may be faults in the implementation; The following week will be used to test these parts.

Most of the implementation of joggerlogger is done, but the report have not progressed in the same pace. Therefore, this will be the main focus for next weeks.

Last week, I wrote that I had problems with getting the SRS=EPSG:4326 to work with the WMS I used. These problems were quickly resolved after a talk with Gunnar Misund, the lecturer for the course LAS (Location aware systems). It turned out that I had bugs in both places where I tried the map service. In the first, I managed to switch some of the arguments for the bounding box so that the min and max long/lat were in the wrong order. In the second, which where in joggerlogger, I had a bug with how I handled the long/lat-values, so I ended up switching them which again resulted in an invalid bounding box.

Now joggerlogger can download images from a WMS and display them on the mobile. In addition, it supports drawing the outline of the route on top of the map. However, the application can only display the whole route at once on a screen and does not have the ability to zoom or move in direction the jogger moves in. These tasks will be the focus for the next week.