Querying your geodata. Tools to improve your search for knowledge. Is that it? Cauld. Armer. Armer.

Cursor Tools to get it the information rapidly: Select Identify Find Measure Hyperlink

Identify – Go straight to the record

Measure – Length of segment and total length

Find – A very useful tool.

Hyperlink – The Lightning Bolt that impresses

Map Tip – A MicroSoft thing Fort Worth

Selection – the strength of GIS versus a mapping package

Why you use selection tools Specific Focus Use to select other features Edit the features Create a new layer Calculate statistics Create a Report Export to a new file Convert to graphics

Four types of Selection: Interactive using the cursor Through the use of attributes By spatial means By drawing a graphic

Selection Tools

Determine which layers are selectable using the interactive method

Selection Options Study these methods – they are important to understand.

Selection Concepts: Create a New Selection 3 in selected set 10 Original Features and Records Orange Stars 7 left over

Add to Selected Set 7 in selected set Big Stars 3 left over

Remove from Selected Set 6 in selected set Green Stars 4 left over

Select from Selected Set 3 in selected set Black Stars 7 left over

Selection by a Graphic Draw the Graphic

Interactive Selection Options

SQL – Structured Query Language Select by Attribute This is called an SQL expression SQL – Structured Query Language

Results of Attribute Query

Select Color “Orange” AND Size “Small” Selection Logic Select Color “Orange” AND Size “Small”

Select Color “Orange” OR Size “Small” Selection Logic Select Color “Orange” OR Size “Small”

Select Color NOT Orange Selection Logic Select Color NOT Orange

Selection Logic Select what you don’t want, and then switch the selection Select for Color = Green Then, Switch Selection

Select by Location

Select by Location

Clearing Selections and Other Options Clears the selection for this layer only.

Clears all Selected Features and Records

Export the Selected Data to a New File