Tool Name	Select and Delete
Tool ID	select_and_delete
Library ID	shapes_tools
Version	1.0
Author(s)	M.Bock & O.Conrad (c) 2018

Description

This tool selects and deletes all features from a shapes layer, which meet the select criterion defined by the expression.

If the Expression Type is set to string expression, the selection uses the given character string expression and the chosen Select if... option. If an Attribute field is selected, only this attribute will be evaluated, or all attributes if not.

If the Expression Type is set to numerical expression, those records will be selected for deletion, for which the expression evaluates to non-zero. The expression syntax is the same as the one for the table calculator. If an Attribute is set, the expression evaluates only this attribute, which can be addressed with the letter 'a' in the expression formula. If no attribute is selected, attributes are addressed by the character 'f' (for 'field') followed by the field number (i.e.: f1, f2, ..., fn) or by the field name in square brackets (e.g.: [Field Name]).

Examples:

f1 > f2

eq([Population] * 2, [Area])

Parameters

Name	Type	Identifier	Constraints
Input
Shapes	shapes, input	SHAPES
Options
Attribute	table field	ATTRIBUTE
Expression Type	choice	METHOD	Available Choices: [0] string expression [1] numerical expression Default: 0
Expression	text	EXPRESSION	Default: expression
Select if...	choice	COMPARE	Available Choices: [0] attribute is identical with search expression [1] attribute contains search expression [2] attribute is contained in search expression Default: 0
Case Sensitive	boolean	CASE	Default: 0