Map GPS Coordinates - GPS Map Coordinates ... - Global Mapper

Anti-Alias Pixels setting ON.
• Auto-Name GCPs - this setting controls whether or not you will be prompted to enter a name for each
ground control point (GCP) entered. Disabling this allows you to specify a name for each GCP, but
can interrupt workflow. Unless you have a specific need to name your GCPs, we would recommend
turning this option on.
• Display GCP Labels - this setting controls whether or not the names of each ground control point
(GCP) will be displayed in the Zoomed and Reference Image views.
• Remember Last Projection - this setting controls whether or not to initialize the projection to the last
used rectification projection when rectifying new data. If this is not enabled, the projection will
always default to Geographic/Arc Degrees/WGS84.
• Add Control Points at Corner Points - this option allows you to easily create a control point at each
corner of the layer being rectified. If enough other control points have already been entered to do a
rectification, the new corner control points will automatically be initialized with the best guess at the
ground/projected location, otherwise they will be initialized with dummy values.
• Display Transformation Equations - this option displays the actual transformation equations used for
transforming this image based on the selected rectification method and the entered control points.
Note that this is only available if enough control points have been entered for a transformation to be
calculated and if the transformation method is based on a simple set of equations.
• Show Crosshairs Across Entire Map - this option controls whether or not crosshair lines are displayed
across the entire Zoomed View and Reference Image views.
• Automatically Save GCP File When Done - this option will automatically prompt the user to save a
GCP file when they select the OK or Apply button to complete a rectification operation.
• Ctrl+Left Click Recenters and Zooms Other View - this option controls whether or not Ctrl+Left
Clicking in the Zoomed or Reference Image view just recenters the other view if possible, or if it also
zooms the other view to the same approximate extents.
Entire Image View
The Entire Image View portion of the Image Rectifier dialog displays, as you might expect, a view of the
entire image being rectified. Any ground control points (GCPs) will also be depicted on this view with a "big
red X". The current portion of the image being displayed in the Zoomed View section will be highlighted as
well.
You can use the mouse in the Entire Image View to control what portion of the image is visible in the Zoomed
View. Clicking the left mouse button anywhere in the Entire Image View will cause the Zoomed View to be
recented on the click position. Dragging a rectangle with the left mouse button will cause the Zoomed View to
recenter and zoom to the box. If you also hold down the CTRL key when clicking the left mouse button, the
Reference Image view will also be recentered on the associated point if there have been enough control points
entered to convert the coordinates.
Zoomed View
Global Mapper User's Manual
The Zoomed View portion of the Image Rectifier dialog allows the user to pan and zoom around the image as
well as select pixel coordinates for control point entry. Any ground control points (GCPs) will be depicted in
this view as well with a "big red X".
You can drag a box with the left mouse button to zoom in on a particular area in this view. Right clicking will
zoom out. If you hold down the CTRL key when right-clicking will zoom out to the full extents. For those of
you with wheel-mice, rolling the wheel forward zooms in and rolling it back zooms out. Moving the mouse
near the edge of the Zoomed View displays a pan arrow. Clicking when this is visible will cause the view to
pan in the direction of the arrow (hold down CTRL to increase the size of the pan). Pressing down the Shift
Map GPS Coordinates - GPS Map Coordinates - GPSCoordinates Map 106