Vector and Feature Manipulation Tools (Especially for GATE-Geospatial 2022)

Get unlimited access to the best preparation resource for CTET/Paper-1 : get questions, notes, tests, video lectures and more- for all subjects of CTET/Paper-1.

Examrace Books on Mapping, GIS, and Remote Sensing prepares you throughly for a wide range of practical applications.

Link buffering and overlay, these tools are considered basic GIS tools often needed for data preprocessing and data analysis. Map manipulation defines many types of vector manipulation tools as given below:

Feature Manipulation Operations

Dissolve

Aggregates features in a feature layer that have the same attribute value or values. Dissolve is used to create a simplified coverage from one that is more complex. Example: A state՚s counties can be dissolved into geographic regions.

Figure Shows Example of a State՚s Counties Can be Dissolved …

Clip

Creates a new layer that includes only those features of the input layer that fall within the area extent of the clip layer.

Figure Shows the Area Extent of Hte Clip Layer

Append

Creates a new layer by piecing together two or more layers.

Append checks for the existence of the coverage, verifies that the list of feature attribute table items matches the items in previously entered coverages and calculates Tic-ID and feature User-ID offsets according to the specified offset option.

Figure Shows to Creates New Layer by Piecing Together More L …

Select

Create a new layer that contains features selected from a user-defined query expression.

Figure Shows Select from a User-Defined Query Expression

Eliminate

Creates a new layer by removing features that meet a user defined query expression.

First figure represents - select country lines for removal from state layer.

Second figure represents - new layer with selected features removed.

Figure Shows Eliminate of Selected Country Lines

Update

Uses a “cut and paste” operation to replace the input layer with the update layer and its features.

Figure Shows Update - To Uses Cut and Paste Operation

Erase

Removes from the input layer those features that fall within the area extent of the erase layer.

Figure Shows to Remove from the Input Layer

Split –

Divides the input layer into two or more layers.

Fgiure Shows Divide the Input Layer into Two or More Layers

Developed by: