Interactively modify map origin
Command Line | Maptool |
|---|---|
| Tools > Origin (menu) > Origin(button) |
originui provides a tool to modify the
origin of a displayed map projection. A marker (dot) is displayed
where the origin is currently located. This dot can be moved and the
map reprojected with the identified point as the new origin.
originui automatically toggles the current
axes into a mode where only actions recognized by originui are
executed. Upon exit of this mode, all prior ButtonDown functions
are restored to the current axes and its children.
originui on activates origin tool. originui
off e-activates the tool. originui will
toggle between these two states.
originui recognizes the following keystrokes. Enter (or Return)
will reproject the map with the identified origin and remain in the originui
mode. Delete and Escape will
exit the origin mode (same as originui off). N,S,E,W keys move
the marker North, South, East or West by 10.0 degrees for each keystroke. n,s,e,w keys move
the marker in the respective directions by 1 degree per keystroke.
originui recognizes the following mouse actions
when the cursor is on the origin marker.
Single-click and hold moves the origin marker. Double-click
the marker reprojects the map with the specified map origin and remains
in the origin mode (same as originui Return).
Extended-click moves the marker along the Cartesian X or Y direction only (depending on the direction of greatest movement).
Alternate-click exits the origin tool (same as originui
off).
Macintosh Key Mapping
Extend-click: Shift+click mouse button
Alternate-click: Option+click mouse button
Microsoft® Windows® Key Mapping
Extend-click: Shift+click left button or both buttons
Alternate-click: Ctrl+click left button or right button
X-Windows Key Mapping
Extend-click: Shift+click left button or middle button
Alternate-click: Ctrl+click left button or right button