SelectByScope()
Summary
Selects the map features located within a scope.
Changes
Optional options array introduced in Version 5.0.
Syntax
n_selected = SelectByScope(string set_name, string operation, scope scope_value [, array options])
| Argument | Contents |
|---|---|
| set_name | The name of the selection set |
| operation | The operation to perform, as indicated below |
| scope_value | The scope in which to search |
| Operation | Meaning |
|---|---|
| several | Replaces the contents of the selection set |
| less | Removes features from the selection set |
| more | Adds features to the selection set |
| subset | Selects a subset of the selection set |
| Option | Type | Contents |
|---|---|---|
| Inclusion | String | "Enclosed" or "Intersecting", overriding the current setting; for more information, see SetSelectInclusion() |
| Max | Integer | Maximum number of records to select |
| Display | Boolean | "True" or "False" overriding the current setting; for more information, see SetSelectDisplay() |
| Auto Redraw | Boolean | "True" or "False" overriding the current setting; for more information, see SetSelectAutoRedraw() |
| Source And | String | A selection set on the current layer that records must be in to be selected |
| Source Not | String | A selection set on the current layer that records must not be in to be selected |
Returns
An integer indicating the number of records in the selection set.
Notes
-
The options array is an optional argument.
-
All selection commands operate on the current layer.
-
If the set does not already exist, SelectByScope() creates it.
-
Use SetSelectInclusion() to control whether features are selected only when fully contained in the search area, or when they intersect the search area.
Example
SetLayer("Census Tracts")
scp = GetSetScope("High Income")
SetLayer("Customers")
SelectByScope("Near High Income", "Several", scp)
Error Codes
| Error Type | Meaning |
|---|---|
| Error | The set name, the operation type or the scope is invalid. |
| NotFound | No features fall within the scope. |
See Also
| Function | Summary |
|---|---|
| SelectByMapWindow() | Selects map features within the current map window |
| SetSelectInclusion() | Sets the inclusion status for spatial selection |