This tool allows to find elements according to a criteria defined by the user, taking as a reference the information associated to them (structure).
1. Click on the Find Objects tool. A window will pop up and you need to define:
Layer: Select the layer in which you want to perform the query. It can be a visible layer or not.
Field: These are all the attributes associated to the layer that you want to be matched when make the query.
Wording: This is the logic condition that will be used in the query.
If the selected attribute comprises numerical data, the wording can be: Equal, Greater than, Smaller than, Greater or equal, Smaller or Equal, Not Equal.
If the selected attribute only contains alphanumeric data, the wording can be: Contains, Equal and Not equal.
Value: This is the complementary data for the query.
You can enter the value by typing it or, double-clicking on the blank space, you can select the value from a list which contains all the existing values for that attribute.
Operator: to apply multiple query expressions, you need to use logic operators (OR, AND) for these combinations.
2. Select Accept. The found objects will be shown on the screen according to the predefined criteria.
It allows to reuse previously saved queries, selecting a saved query from the list.
Each time you make a query, it will be saved in the history (there is a maximum number of items in the history). If you don't want the application to delete your search, you must saved it to favorites.
Favorites/History: Filter the list.
Add/Remove Favorites: Allows/Prevents an item to be deleted from the search history.