Spectra-precision Survey Pro v4.6 Ranger Reference Manual Manuel d'utilisateur Page 56

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Survey Pro Reference Manual
R-48
Grid Factor: is where you enter a map plane scale factor if already
known, otherwise it is the scale factor computed from the Calculate
Scale wizard.
Calculate Scale : This opens the Calculate Scale wizard (Page R-48),
which is used to calculate a combined scale factor or map plane scale
factor.
Setup Map Ground Coordinates : This button will first check that a
map projection is selected and if not, prompt you to select one. Next,
it opens a wizard where after providing an origin point and ground
system offset coordinates, the entire job northing/easting database
will be updated with the ground coordinate system transformation.
Change Map Zone : Opens the Select Coordinate System wizard
where you can choose a mapping plane zone or localized site from the
coordinate system database file as described on Page R-213. You can
also cr
eate a new zone and datum with user-specified parameters.
Calculate Scale
Job Settings Surveying Setup Scale Calculate Scale.
The Calculate Scale wizard is available when Use a single combined
scale factor or Use a grid factor with sea level correction is selected in
the Scale Settings
screen and is used to compute a scale factor. If a
map zone is not currently selected, you will first be required to set
one up before continuing (Page 222).
Projection: displays th
e details about the
current map zone.
Select Point: is where you specify a reference
point.
Calc Scale > : opens Screen Two if Use a single
combined scale factor was selected. If Use a
grid factor with sea level correction was selected,
you will return to the Scale Settings
screen and
the computed grid factor will be entered for
you.
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