Editing
General Comment
• As with GDBs the creation and editing of
feature data can be complex
• Much more complex than is described in
the on-line course
• But as before we want to…
So…
• Concentrate on how to create point,
Line and Area data
• And how to do simple editing
– Of features
– Of Attributes (but lots of that can be
done in the table itself)
Creating data
• Open ArcCatalog
• Make a new folder (usually)
• Make New Shapefile
– Point
– Line
– Area (Poly)
• Define or Import Spatial data
Open ArcMap
• Get the new layers in a map
• If the edit tool bar is not there then
open it with the
button
Basic
selection
tool
Basic
drawing
tool
Most
common
mistake
Points
• Start editing
• Make sure “target” is points and task is
“Create New Feature”
• Select pencil tool and click on each building
to mark with a point.
• Double click when done
• Zoom in to points on building to make sure
the point is in the center of the building
If it is not…
• Change Task to “Modify feature”
• Use Selection tool to select errant
point
• Drag to better position
• Go to next
• When done either
– Stop editing or
– Save edits
Lines
• Edit road shapefile – add roads
• BUT!
• You want the roads to “snap” together where
they meet (intersection)
• Editor drop downSnapping
• Set lines for Vertex, Edge, and End
• Close it
• Now draw roads – note digitize point jumps when
you get near another road. Snapped!
Polygons
•
•
•
•
•
Same deal as before
Set snapping for Vertex and edge
Draw the polys
Snapped together?
Modify feature (right click to add
vertex)
• And so on.