Unit Three: Selecting Features In this unit… ► Find Tool ► Select by Attributes ► Select by Location ► Customizing Selection ► Review ► Selecting: An Overview ► Selection Tool

Unit Three – Selecting Features 2 ► Select records with click in the left margin. (did it in chapter 2) Review Select a Row We LOVE This. ► Selecting Attribute Table records causes the corresponding features to be selected in the Display Area. ► Modifying, analyzing and processing geospatial data requires filtering of features.

Unit Three – Selecting Features 3 ► Filter records with:  Select Tool  Find Tool  Query Builder Tool (select by attributes)  Select by Location (spatial selection)  Layer Definition (not included in this unit) Selecting: An Overview

Unit Three – Selecting Features 4 Context – A big issue!  Pay particular attention to the layers that selection tools operate upon. Selecting: An Overview Context: Your Choice!

Unit Three – Selecting Features 5 Selecting: An Overview Getting Oriented… The “Standard Tool Bar” - a mix of functionality. We looked at these… In this Unit

Unit Three – Selecting Features 6 Selecting: An Overview Getting Oriented… Note the location of other selection tools addressed in this unit In this Unit

Unit Three – Selecting Features 7 Selecting: An Overview Getting Oriented… Clearing Selections: Clears all Layers ClearsLayer/Context1. 2.

Unit Three – Selecting Features 8 The Selection Tool does:  point-and-click selection  click-and-drag selection but... the tool selects in multiple layers at once! Selection Tool

Unit Three – Selecting Features 9 Selection Tool ► Features in all “Selectable Layers” selected together ► Selectable layers are not picked as part of the tool – indicated prior to selection.  Features in newly added layers: selectable by default

Unit Three – Selecting Features 10 Selection Tool Two methods: 1.by “Selectable Layers” 2.by “ 4 isible” Layers Selectable Layers

Unit Three – Selecting Features 11 Selection Tool Selectable Layers I 1. S ELECTION M ENU 2. S ET S ELECTABLE L AYERS, and make layers 4 isible to selection tools Checked items will be selectable (probably)

Unit Three – Selecting Features 12 Selection Tool Selectable Layers I-a 1. T OOLS M ENU 2. O PTIONS 3. TOC T AB 4. Make the TOC Selection Tab 4 isible Now it’s an easy check to see what layers are supposed to be selectable.

Unit Three – Selecting Features 13 Selection Tool Selectable Layers II A Layer that is not is not selectable Only PBNH features will be selected, (PBNH is ) 4 isible In the S ELECTION T AB of the TOC, only PBNH is shown with selected features. 4 isible

Unit Three – Selecting Features 14 Your turn… Chapter 3: Step 1 through 5

Unit Three – Selecting Features 15 Find Tool What Layers are Selected? You get to choose with “Find”: 1. all layers 2. visible layers 3. selectable layers 4. all dataframes 5. any discreet layers The context menu for the features that are found contains actions, including “Select Feature(s)”

Unit Three – Selecting Features 16 Select by Attributes Tool Use “Complete List” button at the risk of your valuable time! What Layers are Selected? ► Any single layer – but Not In Layer Context! (go figure) ► From S ELECTION M ENU

Unit Three – Selecting Features 17 Select by Attributes Tool Watch Out: Try to think less like you, and more like a computer! 1. ArcGIS tests each record, and will find that: a)A record in a DB of towns can NEVER be both… “Name” = ‘Durham’ AND AND “Name” = ‘Newmarket’ b)But that one record may turn out to be… “Name” = ‘Durham’ OR OR “Name” = ‘Newmarket’ 2. Rule of Thumb: Clauses must be a)Complete b)Separately evaluate-able “Name” = ‘Newmarket’ OR “Name” = ‘Durham’

Unit Three – Selecting Features 18 Your turn… Chapter 3: Step 6 through 10

Unit Three – Selecting Features 19 Select by Location Tool How does it work? Select any of these features… That are within these features… Result! or near, or contained by, etc, etc. Layer 1. Layer 2.

Unit Three – Selecting Features 20 Select by Location Tool What Layers are Selected? ► Multiple layers or single layers ► From S ELECTION M ENU ► Many, many options – Geoprocessing! Diagrams change with selections

Unit Three – Selecting Features 21 Selection Options 1. From S ELECTION >> O PTIONS M ENU 2. From I NTERACTIVE S ELECTION M ETHOD M ENU. Selection Tools are very flexible.

Unit Three – Selecting Features 22 Your turn… Chapter 3: Step 11 through END