BRN 9-2 (uncompressed) - Flipbook - Page 52
26
27
Map details from the 1956 map (Ò26Ó) and 2023 (Ò27Ó) are
shown above. The apparent difference in the area of full
forestation is dramatic, but see our assessment of Google
Earth images later in this article.
28
Elevation points and benchmarks shown on the map of 1956
are not shown on the map of 2023.
Popular Map Applications
Paper has given way to the screen of digital devices. A
screenshot of the area around Kingston is shown above right
(Ò28Ó). ItÕs an image from the onX app community. This
particular image is from the onX series for 4X4 enthusiasts
and Òoff-roadersÓ. The layers (over a base satellite image)
are optimized for the type of information that community
uses regularly. Customization is possible. The image at the
bottom right (Ò29Ó) is a screenshot from the All Trails app.
In this case it shows cultural features (including foot trails)
and topography depicted with vegetation shading and
elevation contour lines.
Most of these maps are using data layers on top of some
type of base layer. The base layer may be a topographic
map, a satellite image, actually anything you wish. An
additional layer(s) of information is synchronized with the
base level to depict additional content. This is the same
technique (augmented over time) that we (meaning, Jon
Barnes) utilized in 2015 to enhance Google Earth images
with geologic map overlays (see Ò25Ó).
Nearly all of the popular map applications allow the user to
add additional information to ÒtheirÓ database and to output
that information in some manner. The user can add photographs and ÒattachÓ them to a particular location, or a note,
or a waypoint, which can enable the user to utilize a variety
of assessment techniques.
29
Many digital devices allow the user to apply information
(make notes, circles, whatever) to a screen image.
51
