Basic Spatial Queries

From Digitizing to Editing Editing feature shapes The editing process Maintaining spatial relationships Editing feature attributes Creating events from tabular data

Editing Feature Shapes It all starts with a sketch

The Editing Process Add your reference data Start EDIT session Set editing environment Target layer Snapping distance Identify the feature’s sketch Edit your vertices Be sure to save your edits

Maintaining Topology Maintaining spatial relationships

Editing With Topology

Editing Feature Attributes Attributes Feature Dialog Attribute Table

Calculating Attributes Field Calculator

Digitizing Features

Points From Tables

Basic Spatial Queries

Query By Location

Query By Attribute

Not So Basic Spatial Query TIMBER STANDS TIMBER STANDS

Bool HL HI LL HI HI HI HL LI LL LI HL: HIGH LITERACY LL: LOW LITERACY HI: HIGH INCOME LI: LOW INCOME

Point-in-Polygon

Residential, non-flood 27 Commercial - non-flood Commercial - flood Residential - flood Residential - non-flood Commercial Residential Flood zone A B C Surface class Frequency (ha) Commercial, non-flood 77 Commercial, flood 25 Residential, non-flood 27 Residential, flood 120

Recode / Reclassify

Recode / Reclassify

Overlay

Overlay

Overlay

Point/Line-Polygon

Buffer

Buffering Lines

Buffering Areas

The Simple Secret of GIS

Buffer Application

Buffer Application

Select-By-Location

Select-By-Location

Voronoi / Thiessen