WMS:Feature Selection: Difference between revisions
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Features of a layer can also be selected based on a query of the attributes and their values. The ''Query Wizard'' is used to choose the layer the user wishes to select from and the way the query results will be treated. The query can create a new selection, add to the current selection, remove from the current selection, or select on from within currently selected features. | Features of a layer can also be selected based on a query of the attributes and their values. The ''Query Wizard'' is used to choose the layer the user wishes to select from and the way the query results will be treated. The query can create a new selection, add to the current selection, remove from the current selection, or select on from within currently selected features. | ||
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|[[Image:GISquery wizard.png|thumb|none|400 px|GIS ''Query Wizard'' first step.]] | |||
|[[File:GISquery wizard2.png|thumb|none|400 px|GIS ''Query Wizard'' second step.]] | |||
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==Selection by Location== | ==Selection by Location== | ||
Revision as of 15:24, 29 April 2015
With ArcObjects enabled three different selection methods are available. However, before attempting to select layers users should make sure that the layer(s) to be used are selectable. By default a layer is selectable when opened, but the status can be changed to unselectable using the Selectable Layers command in the Selection menu.
Graphical Selection
The select features tool can be used to interactively select features from GIS layers. When selecting using graphical selection all features from all selectable layers will be added to the selection list. A rectangular box can be dragged around a region of interest and then all features from all selectable layers that have in part within the rectangle will be added to the selection list.
The Options command is used to specify how features are selected and the way they are displayed.
Selection by Attribute
Features of a layer can also be selected based on a query of the attributes and their values. The Query Wizard is used to choose the layer the user wishes to select from and the way the query results will be treated. The query can create a new selection, add to the current selection, remove from the current selection, or select on from within currently selected features.
Selection by Location
Users can select features from one or more GIS layers based on their spatial relationship to another layer. The Select By Location dialog allows users to specify whether to select new features, add to currently selected features, select from selected features, or delete from selected features. In addition, it allows users to specify the layers to be selected from as well as the relationship with the selection layer. Finally, users specify the layer used for selection and whether to use all features or only selected features. A buffer distance can be added to the features of the selection layer.
Clearing Selected Features
The Clear Selected Features command clears all features from the selection list.
Related Topics
WMS – Watershed Modeling System | ||
|---|---|---|
| Modules: | Terrain Data • Drainage • Map • Hydrologic Modeling • River • GIS • 2D Grid • 2D Scatter |  |
| Models: | CE-QUAL-W2 • GSSHA • HEC-1 • HEC-HMS • HEC-RAS • HSPF • MODRAT • NSS • OC Hydrograph • OC Rational • Rational • River Tools • Storm Drain • SMPDBK • SWMM • TR-20 • TR-55 | |
| Toolbars: | Modules • Macros • Units • Digitize • Static Tools • Dynamic Tools • Drawing • Get Data Tools | |
| Aquaveo | ||
