Geoscience Reference
In-Depth Information
3.2.3.1 Data Selection
Sharing trails with other trekkers
Cross
-
country bikers travel on their own trails but they also use pedestrian
trails like GR, GRP and PR in France. Therefore, both kinds have been
added to their maps. Thus, they can plan their route bearing in mind all
trails that they can use and those they may share with pedestrian walkers.
3.2.3.2 Graphic representation
Representation of altitude gradient
Cross
-
country bikers use contour lines to understand relief and
alti-
tude gradient (cf.
figure 1
- “altitude gradient” line). Contour lines are
considered as very useful but hard to read by cross-country bikers on the
existing maps. They expect a map with more highlighted and structured
contour lines:
•
The colour of the contour lines should be darkened as for the others
walkers. Thus, the contrast between contour lines and the base map or
the vegetation is increased.
•
The contour lines must be thickened. This will differentiate even more
the contour lines with landmarks.
Both of those representation modifications aim at highlighting contour
lines.
On the other hand, the differentiation between main contour lines and others
should be increased. That is why main lines have been thickened more
than the others. Thereby, w hierarchy between different contour lines is
better illustrated. This improves the structure of the representation and the
readability.
Representation of difficulty levels
One of the cross
-
country bikers' expectations is to visualize the
difficulty level of their future trail (cf.
figure 2
). Thus, we suggest
reproducing the difficulty level representation that is widely used on
