62.1. Introduction

These tools are the ones for selecting a group of features in one table. Some of the gvSIG tools only work with selected elements.

In the case of attribute tables of one layer, the selection of vectorial elements can be made from the View or from the attribute table of the layer.

These tools are available from the “Selection” and its relevant button bar. The tool “Select by attributes” is among the Table button bar.

Menu

Button bar

Let´s see all the available tools:

Icon

Tool

Shortkey

Description

Clear


To clear the selection

Select by attributes


To select features in function on one query by attributes.

Reverse


Ito reverse the selection

Disable move up


To disable the move up option

Move up


To move up the selected records in the table

To add records to an existent selection, the key “ctrl” must be pressed while selecting the records. To remove one or more records, press “ctrl” and click on them. With the keyShift” (capital letters) is possible to select consecutive records.

The selected records will be highlighted in yellow.


62.2. Selection by attributes

To select records from one table using an attribute query.

This tool is available from the “Table” menu and its relevant button bar.

The interface is:

  1. Fields. Field listing of the layer. Double click on the field to be added to the selection query.

  2. Logical operators. To insert, clicking on them, one logical expression to the query.

  3. Known values. It shows one list with all the different values for the selected field. Double click on the value to add to the selection query.

  4. Query. The query to execute will be written. It is possible to type it directly.

  5. Selection options