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the reference points you incorrectly created on the
background map will all be deleted. Try again, this time
with correct point location and coordinates.
•
It is highly recommended to place the original image file
used to create the background map in the same folder as
the job file using it. Observing this rule will simplify the
download procedure.
•
When georeferencing an image, the original image file is
unchanged and three new files are created:
When the original image file is in TIF format, some of
these three files may not be created.
Logging New
Features
Introduction
For each new feature you log in the field, MobileMapper Field
allows you to set the following parameters, just before it
actually starts logging the feature:
•
On the
Layer
tab, you can choose:
– The name of the layer corresponding to the feature you
want to log (from the list of layers found in the job).
– For MIF layers, and for those contained in a DXF job,
the geometry (i.e. point, line or polygon) of the feature.
This field is preset for CSV layers (points exclusively)
and for SHP layers.
•
On the
Settings
tab, you can set:
– The position averaging time at the end of which the
coordinates of a point feature will be logged. The
longer the averaging time, the better the precision you
get for each of your points. This implies staying still on
the point throughout the averaging time.
– The automatic or manual vertex logging mode for a line
or polygon feature:
In
Automatic
mode, the receiver automatically picks up
the position of each of the points (
) as you keep
walking along the feature. The logging rate
i
is preset
and represents either the time elapsed or the distance
traveled.
Created files
Designation
<image filename>.prj
Coordinate system used
<image filename>.xxw
Auxiliary data. “xx” in the extension stands
for the first two letters in the extension of
the original image file (e.g. “JP” for a jpg
file)
<image filename>.<image file
extension>.ref.txt
Coordinates of reference points and coor-
dinate system used.