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VectorDE_GK3ETRS8932NDirInv.py
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VectorDE_GK3ETRS8932NDirInv.py
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# -*- coding: utf-8 -*-
"""
***************************************************************************
VectorDE_GK3ETRS8932NDirInv.py
---------------------
Date : March 2015
Copyright : (C) 2015 by Giovanni Manghi
Email : giovanni dot manghi at naturalgis dot pt
***************************************************************************
* *
* 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__ = 'Giovanni Manghi'
__date__ = 'March 2015'
__copyright__ = '(C) 2015, Giovanni Manghi'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import inspect
import os
from PyQt4.QtGui import QIcon
from processing.gui.Help2Html import getHtmlFromRstFile
try:
from processing.parameters.ParameterVector import ParameterVector
from processing.parameters.ParameterSelection import ParameterSelection
from processing.outputs.OutputVector import OutputVector
except:
from processing.core.parameters import ParameterVector
from processing.core.parameters import ParameterSelection
from processing.core.outputs import OutputVector
from processing.core.GeoAlgorithm import GeoAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils
from processing.tools.vector import ogrConnectionString, ogrLayerName
class VectorDE_GK3ETRS8932NDirInv(GeoAlgorithm):
INPUT = 'INPUT'
OUTPUT = 'OUTPUT'
TRANSF = 'TRANSF'
TRANSF_OPTIONS = ['Direct: Old Data -> ETRS89 [EPSG:4258]',
'Inverse: ETRS89 [EPSG:4258] -> Old Data']
CRS = 'CRS'
CRS_OPTIONS = ['Gauss-Krüger zone 3 [EPSG:31467]']
GRID = 'GRID'
GRID_OPTIONS = ['BETA2007']
def getIcon(self):
return QIcon(os.path.dirname(__file__) + '/icons/de.png')
def help(self):
name = self.commandLineName().split(':')[1].lower()
filename = os.path.join(os.path.dirname(inspect.getfile(self.__class__)), 'help', name + '.rst')
try:
html = getHtmlFromRstFile(filename)
return True, html
except:
return False, None
def defineCharacteristics(self):
self.name = '[DE] Direct and inverse Vector tranformation'
self.group = '[DE] Germany'
self.addParameter(ParameterVector(self.INPUT, 'Input vector',
[ParameterVector.VECTOR_TYPE_ANY]))
self.addParameter(ParameterSelection(self.TRANSF, 'Transformation',
self.TRANSF_OPTIONS))
self.addParameter(ParameterSelection(self.CRS, 'Old Datum',
self.CRS_OPTIONS))
self.addParameter(ParameterSelection(self.GRID, 'Ntv2 Grid',
self.GRID_OPTIONS))
self.addOutput(OutputVector(self.OUTPUT, 'Output'))
def processAlgorithm(self, progress):
inLayer = self.getParameterValue(self.INPUT)
conn = ogrConnectionString(inLayer)[1:-1]
output = self.getOutputFromName(self.OUTPUT)
outFile = output.value
if self.getParameterValue(self.TRANSF) == 0:
# Direct transformation
arguments = ['-s_srs']
if self.getParameterValue(self.CRS) == 0:
# Gauss-Krüger zone 3
if self.getParameterValue(self.GRID) == 0:
# BETA2007
arguments.append('+proj=tmerc +lat_0=0 +lon_0=9 +k=1 +x_0=3500000 +y_0=0 +ellps=bessel +nadgrids=' + os.path.dirname(__file__) + '/grids/BETA2007.gsb +wktext +units=m +no_defs')
arguments.append('-t_srs')
arguments.append('EPSG:4258')
arguments.append('-f')
arguments.append('ESRI Shapefile')
arguments.append(outFile)
arguments.append(conn)
arguments.append(ogrLayerName(inLayer))
else:
# Inverse transformation
arguments = ['-s_srs']
arguments.append('EPSG:4258')
arguments.append('-t_srs')
if self.getParameterValue(self.CRS) == 0:
# Gauss-Krüger zone 3
if self.getParameterValue(self.GRID) == 0:
# BETA2007
arguments.append('+proj=tmerc +lat_0=0 +lon_0=9 +k=1 +x_0=3500000 +y_0=0 +ellps=bessel +nadgrids=' + os.path.dirname(__file__) + '/grids/BETA2007.gsb +wktext +units=m +no_defs')
arguments.append('-f')
arguments.append('\"Geojson\"')
arguments.append('/vsistdout/')
arguments.append(conn)
arguments.append(ogrLayerName(inLayer))
arguments.append('-lco')
arguments.append('ENCODING=UTF-8')
arguments.append('|')
arguments.append('ogr2ogr')
arguments.append('-f')
arguments.append('ESRI Shapefile')
arguments.append('-a_srs')
arguments.append('EPSG:31467')
arguments.append(outFile)
arguments.append('/vsistdin/')
arguments.append('-lco')
arguments.append('ENCODING=UTF-8')
if os.path.isfile(os.path.dirname(__file__) + '/grids/BETA2007.gsb') is False:
try:
from urllib import urlretrieve
except ImportError:
from urllib.request import urlretrieve
urlretrieve ("https://github.com/NaturalGIS/ntv2_transformations_grids_and_sample_data/raw/master/de/BETA2007.gsb", os.path.dirname(__file__) + "/grids/BETA2007.gsb")
commands = ['ogr2ogr', GdalUtils.escapeAndJoin(arguments)]
GdalUtils.runGdal(commands, progress)