Vector Data Transformation

Apply a transform to each vertex of the input VectorData

Detailed description

This application performs a transformation of an input vector data transforming each vertex in the vector data. The applied transformation manages translation, rotation and scale, and can be centered or not.

Parameters

This section describes in details the parameters available for this application. Table [1] presents a summary of these parameters and the parameters keys to be used in command-line and programming languages. Application key is VectorDataTransform .

[1]Table: Parameters table for Vector Data Transformation.
Parameter Key Parameter Type Parameter Description
vd Input vector data Input vector data
out Output vector data Output vector data
in Input image Input image
transform Group Group
transform.tx Float Float
transform.ty Float Float
transform.ro Float Float
transform.centerx Float Float
transform.centery Float Float
transform.scale Float Float
inxml XML input parameters file XML input parameters file
outxml XML output parameters file XML output parameters file

Input Vector data: Input vector data to transform.

Output Vector data: Output transformed vector data.

Support image: Image needed as a support to the vector data.

[Transform parameters]: Group of parameters to define the transform.

  • Translation X: Translation in the X direction (in pixels).
  • Translation Y: Translation in the Y direction (in pixels).
  • Rotation Angle: Angle of the rotation to apply in degrees.
  • Center X: X coordinate of the rotation center (in physical units).
  • Center Y: Y coordinate of the rotation center (in physical units).
  • Scale: The scale to apply.

Load otb application from xml file: Load otb application from xml file.

Save otb application to xml file: Save otb application to xml file.

Example

To run this example in command-line, use the following:

otbcli_VectorDataTransform -vd qb_RoadExtract_easyClassification.shp -in qb_RoadExtract.tif -out VectorDataTransform.shp -transform.ro 5

To run this example from Python, use the following code snippet:

#!/usr/bin/python

# Import the otb applications package
import otbApplication

# The following line creates an instance of the VectorDataTransform application
VectorDataTransform = otbApplication.Registry.CreateApplication("VectorDataTransform")

# The following lines set all the application parameters:
VectorDataTransform.SetParameterString("vd", "qb_RoadExtract_easyClassification.shp")

VectorDataTransform.SetParameterString("in", "qb_RoadExtract.tif")

VectorDataTransform.SetParameterString("out", "VectorDataTransform.shp")

VectorDataTransform.SetParameterFloat("transform.ro", 5)

# The following line execute the application
VectorDataTransform.ExecuteAndWriteOutput()

Limitations

None

Authors

This application has been written by OTB-Team.