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Add v.rectify algorithm

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Médéric RIBREUX
Médéric RIBREUX committed Mar 12, 2016
1 parent 538ad69 commit 7f461f3f1a670fd06d1f793cad346e767ef0e512
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v.rectify
Rectifies a vector by computing a coordinate transformation for each object in the vector based on the control points.
Vector (v.*)
ParameterVector|input|Name of input vector map|-1|False
ParameterString|inline_points|Inline control points|None|True|True
ParameterFile|points|Name of input file with control points|False|True
ParameterNumber|order|Rectification polynomial order|1|3|1|False
ParameterString|separator|Field separator for RMS report|None|False|True
*ParameterBoolean|-3|Perform 3D transformation|False
*ParameterBoolean|-o|Perform orthogonal 3D transformation|False
*ParameterBoolean|-b|Do not build topology|False
OutputVector|output|Rectified
OutputFile|rmsfile|Root Mean Square errors file
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# -*- coding: utf-8 -*-

"""
***************************************************************************
v_rectify.py
------------
Date : March 2016
Copyright : (C) 2016 by Médéric Ribreux
Email : medspx at medspx dot fr
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""

__author__ = 'Médéric Ribreux'
__date__ = 'March 2016'
__copyright__ = '(C) 2016, Médéric Ribreux'

# This will get replaced with a git SHA1 when you do a git archive

__revision__ = '$Format:%H$'

from processing.core.parameters import getParameterFromString


def checkParameterValuesBeforeExecuting(alg):
""" Verify if we have the right parameters """
if alg.getParameterValue('inline_points') and alg.getParameterValue(u'points'):
return alg.tr("You need to set either an input control point file or inline control points!")

return None


def processCommand(alg):
# handle inline add data
input_txt = alg.getParameterFromName('inline_points')
inputParameter = alg.getParameterFromName('points')
if input_txt.value:
# Creates a temporary txt file
ruleFile = alg.getTempFilename()

# Inject rules into temporary txt file
with open(ruleFile, "w") as tempRules:
tempRules.write(input_txt.value)
inputParameter.value = ruleFile
alg.parameters.remove(input_txt)

# exclude output for from_output
output = alg.getOutputFromName('rmsfile')
alg.removeOutputFromName('rmsfile')

# Create a false input parameter for rmsfile
param = getParameterFromString(u"ParameterString|rmsfile|the file|None|False|False")
param.value = output.value
alg.addParameter(param)

alg.processCommand()
alg.parameters.remove(param)
alg.addOutput(output)
if input_txt.value:
inputParameter.value = None
alg.addParameter(input_txt)

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