Graphics Reference
In-Depth Information
Suggested improvements
Of course, no application is ever completely finished, and there are always things that
could be improved upon. Here are a few ideas for things you could do to make the
ForestTrails application even better:
• Adding labels to the trail layer, using the
QgsPalLabeling
engine to only show
only the track names when the map is zoomed in sufficiently so that the names can
be read.
• Changing the color used for the track based on the track type. For example, you
might draw all bike trails in red, all walking trails in green, and all horse trails in
yellow.
• Adding a
View
menu where the user can select the types of tracks to be displayed.
For example, the user might choose to hide all the horse trails, or show only the
walking trails.
• Extending the logic of the shortest path calculation to exclude any tracks that are
currently closed.
• Adding another map layer to display various obstacles on the map. An obstacle
would be something that is blocking a track, and could be represented by a Point
geometry. Typical obstacles might be things like fallen trees, landslides, and ongo-
ing track maintenance. Depending on the obstacle, the trail might be closed until
the obstacle is cleared.
• Using
Print Composer
to generate a printable version of the map. This could be
used to print maps based on the current state of the forest trails.
