Tools
-----

Buffer
======

This algorithm computes a buffer area for all the features in an input layer, using a fixed or dynamic distance. 
The segments parameter controls the number of line segments to use to approximate a quarter circle when creating rounded offsets. 
The end cap style parameter controls how line endings are handled in the buffer. 
The join style parameter specifies whether round, miter or beveled joins should be used when off setting corners in a line. 
The miter limit parameter is only applicable for miter join styles, and controls the maximum distance from the offset curve to use when creating a mitered join.


.. image:: ../img/vector/buffer_1'.png
.. image:: ../img/vector/buffer_2'.png

Step 1: Type input:

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **Vector** from Vectors list
4. Type **Distance** (default: 100m)
5. Type **Resolution**
6. Type **Quadsegs** which controls the number of line segments to use to approximate a quarter circle when creating rounded offsets.
7. Select **Cap style** (default: round): controls how line endings are handled in the buffer.
8. Select **Join style** (default: round): Specifies whether round, miter or beveled joins should be used when offsetting corners in a line
9. Type **Mitre limit** (default: 5): Controls the maximum distance from the offset curve to use when creating a mitered join (only applicable for miter join styles). Minimum: 1.

Step 2: Click “Submit” button

Centroid
========

Creates a new point layer, with points representing the centroids of the geometries of the input layer.

Step 1: Type input:

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **Vector** from Vectors list

.. image:: ../img/vector/centroid_1'.png
    :align: center

Step 2: Click “Submit” button

Rectify
=======

A method that approximates the prediction pixels into polygons making decisions based on the whole prediction feature space.

Step 1: Type input:

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **Vector** from Vectors list

.. image:: ../img/vector/rectify.png
    :align: center

Step 2: Click “Submit” button

Row detection
=============

Row detection is performed automatically for straight and curved rows. The detected rows are used in many applications.

Step 1: Type input:

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **Vector** from Vectors list

.. image:: ../img/vector/row_detection_1'.png
    :align: center

Step 2: Click “Submit” button

Simplify
========

Simplifies the geometries in a line or polygon layer. It creates a new layer with the same features as the ones in the input layer, but with geometries containing a lower number of vertices.

Step 1: Type input

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **Vector** from Vectors list
4. Type **Tolerance** : if the distance between two nodes is smaller than the tolerance value, the segment will be simplified and vertices will be removed.

.. image:: ../img/vector/simplify_1'.png
    :align: center

Step 2: Click “Submit” button

Vector Clip
===========

This algorithm clips a vector layer using the features of an additional polygon layer. Only the parts of the features in the Input layer that fall within the polygons of the Overlay layer will be added to the resulting layer.

Step 1: Type input

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **Vector** from Vectors list
4. Select **AOI** from AOIs list

.. image:: ../img/vector/vector_clip_1'.png
    :align: center

Step 2: Click “Submit” button

Update
=======
Computes a geometric intersection of the **input features** and **update features**. The attributes and geometry of the input features are updated by the update features in the output feature class

.. image:: ../img/vector/update_1.png
    :align: center

Step 1: Type input

1. Type **Name**
2. Select **destination folder** to contain result
3. Select vector from Vectors or layer from Layers Control. The **input features** must be polygon.
4. Select vector from Vectors or layer from Layers Control. The **update features** must be polygon.
5. Select **Keep borders**: If option **Borders** is checked (default), the outside border of the update features will be kept in the output. Else if option **No borders** is checked, the outside border of the update features are dropped after they are inserted into the input features. Item values of the update features take precedence over input features attributes.

Step 2: Click "Submit" button

After task is successful, check vector in Vectors menu.

Union
=====
Computes a geometric union of the **input features**. All features and their attributes will be written to the output.

.. image:: ../img/vector/union_1.png
    :align: center

Step 1: Type Input

1. Type **Name**
2. Select **destination folder** to contain result
3. Select vectors from Vectors or layers from Layers Control. The **input features** must be polygon.
4. Select **Join attributes** to determines which attributes from the input features will be transferred to the output.
5. Select **Gaps** option to gaps are areas in the output that are completely enclosed by other polygons (**Gaps** — No feature will be created for areas in the output that are completely enclosed by polygons. This is the default.**No gaps** — A feature will be created for the areas in the output that are completely enclosed by polygons. This feature will have blank attributes and its FID values will be -1).

Step 2: Click "Submit" button

After task is successful, check vector in Vectors menu.

Intersect
==========
Computes a geometric intersection of the **input features**. Features or portions of features which overlap in all layers and/or feature classes will be written to the output.

.. image:: ../img/vector/intersect_1.png
    :align: center

Step 1: Type Input

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **input features** is vector from Vectors or layer from Layers Control.
4. Select **Join attributes** option to determines what attributes will be transferred to the output.
5. Select **Output type** option to choose what type of intersection you want to find. 

Step 2: Click "Submit" button

After task is successful, check vector in Vectors menu.

Symmetrical Difference
======================
Features or portions of features in the **input features** and **update features** that do not overlap will be written to the output.

.. image:: ../img/vector/symmetrical_difference_1.png
    :align: center

Step 1: Type Input

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **input features** is vector from Vectors or layer from Layers Control.
4. Select **erase features** is vector from Vectors or layer from Layers Control.
5. Select **Join attributes** option to determines what attributes will be transferred to the output.

Step 2: Click "Submit" button

After task is successful, check vector in Vectors menu.

Erase
=====
Creates a feature class by overlaying the **input features** with the polygons of the **erase features**. Only those portions of the input features falling outside the erase features outside boundaries are copied to the output.

.. image:: ../img/vector/erase_1.png
    :align: center

Step 1: Type Input

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **input features** is vector from Vectors or layer from Layers Control.
4. Select **erase features** is vector from Vectors or layer from Layers Control.

Step 2: Click "Submit" button

After task is successful, check vector in Vectors menu.

Identity
========
Computes a geometric intersection of the **input features** and **identity features**. The input features or portions thereof that overlap identity features will get the attributes of those identity features.

.. image:: ../img/vector/identity_1.png
    :align: center

Step 1: Type Input

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **input features** is vector from Vectors or layer from Layers Control.
4. Select **identity features** is vector from Vectors or layer from Layers Control. Identity features must be polygons or have the same geometry type as the input features.
5. Select **Join attributes** option to determines what attributes will be transferred to the output.
6. Select **Relationship** option to determines if additional spatial relationships between the input features and the identity features are to be written to the output. This only applies when the input features are lines and the identity features are polygons. 

Step 2: Click "Submit" button

After task is successful, check vector in Vectors menu.

Spatial Join
============
Joins attributes from one feature to another based on the spatial relationship. The target features and the joined attributes from the join features are written to the output feature class.

.. image:: ../img/vector/spatial_join_1.png
.. image:: ../img/vector/spatial_join_2.png

Step 1: Type input:

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **target features** (Attributes of the target features and the attributes from the joined features are transferred to the output feature class. However, a subset of attributes can be defined in the field map parameter)
4. Select **join features** 
5. Select **join operation** to specifies how joins between the target features and join features will be handled in the output feature class if multiple join features are found that have the same spatial relationship with a single target feature (**JOIN_ONE_TO_ONE** — If multiple join features are found that have the same spatial relationship with a single target feature, the attributes from the multiple join features will be aggregated using a field map merge rule. **JOIN_ONE_TO_MANY** — If multiple join features are found that have the same spatial relationship with a single target feature, the output feature class will contain multiple copies (records) of the target feature.)
6. Select **match option** to specifies the criteria used to match rows.

Step 2: Click "Submit" button

After task is successful, check vector in Vectors menu.

Raster map
==========

Add new attribute to the vector result which determines the most value of all cells in the value raster that belong to the same zone as the output cell. 


.. image:: ../img/vector/raster_map_1.png
    :align: center

1. Type **Name**
2. Select **destination folder** to contain result
3. Select **image**
4. Select **vector**