Add NTv2 Globogis vector transformation for Italy

NaturalGIS · Nov 14, 2019 · 58c6eed · 58c6eed
1 parent 2eb4eb4
commit 58c6eed
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Showing 5 changed files with 191 additions and 7 deletions.
diff --git a/DETransformProvider.py b/DETransformProvider.py
@@ -41,6 +41,7 @@
 from ntv2_transformations.RasterES_ED50ERTS89DirInv import RasterES_ED50ERTS89DirInv
 from ntv2_transformations.VectorIT_RER_ETRS89DirInv import VectorIT_RER_ETRS89DirInv
 from ntv2_transformations.RasterIT_RER_ETRS89DirInv import RasterIT_RER_ETRS89DirInv
+from ntv2_transformations.VectorIT_ITALY_ETRS89DirInv import VectorIT_ITALY_ETRS89DirInv
 from ntv2_transformations.VectorCH_LV95ETRS89DirInv import VectorCH_LV95ETRS89DirInv
 from ntv2_transformations.RasterCH_LV95ETRS89DirInv import RasterCH_LV95ETRS89DirInv
 from ntv2_transformations.VectorUK_OSGB36ETRS89DirInv import VectorUK_OSGB36ETRS89DirInv
@@ -106,6 +107,7 @@ def getAlgs(self):
                 RasterES_ED50ERTS89DirInv(),
                 VectorIT_RER_ETRS89DirInv(),
                 RasterIT_RER_ETRS89DirInv(),
+                VectorIT_ITALY_ETRS89DirInv(),
                 VectorCH_LV95ETRS89DirInv(),
                 RasterCH_LV95ETRS89DirInv(),
                 VectorUK_OSGB36ETRS89DirInv(),

diff --git a/RasterIT_RER_ETRS89DirInv.py b/RasterIT_RER_ETRS89DirInv.py
@@ -60,10 +60,10 @@ def name(self):
         return 'itrastertransform'
 
     def displayName(self):
-        return '[IT] Direct and inverse Raster Transformation'
+        return '[IT] (Emilia Romagna) Raster - Direct and inverse Transformation'
 
     def group(self):
-        return '[IT] Italy (Emilia-Romagna)'
+        return '[IT] Italy'
 
     def groupId(self):
         return 'italy'
@@ -86,7 +86,7 @@ def initAlgorithm(self, config=None):
                        ('UTM - ED50 [EPSG:23032]', 23032),
                       )
 
-        self.grids = (('Grigliati NTv2 RER 2013 la trasformazione di coordinate in Emilia-Romagna', 'RER_ETRS89'),
+        self.grids = (('Grigliati NTv2 RER 2013 per la trasformazione di coordinate in Emilia-Romagna', 'RER_ETRS89'),
                      )
 
         self.addParameter(QgsProcessingParameterRasterLayer(self.INPUT,

diff --git a/VectorIT_ITALY_ETRS89DirInv.py b/VectorIT_ITALY_ETRS89DirInv.py
@@ -0,0 +1,169 @@
+# -*- coding: utf-8 -*-
+
+"""
+***************************************************************************
+    VectorIT_ITALY_ETRS89DirInv.py
+    ---------------------
+    Date                 : August 2019
+    Copyright            : (C) 2019 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__ = 'Alexander Bruy, Giovanni Manghi'
+__date__ = 'August 2019'
+__copyright__ = '(C) 2019, Giovanni Manghi'
+
+# This will get replaced with a git SHA1 when you do a git archive
+
+__revision__ = '$Format:%H$'
+
+import os
+from urllib.request import urlretrieve
+
+from qgis.PyQt.QtGui import QIcon
+
+from qgis.core import (QgsProcessingException,
+                       QgsProcessingParameterFeatureSource,
+                       QgsProcessingParameterEnum,
+                       QgsProcessingParameterVectorDestination
+                      )
+
+from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
+from processing.algs.gdal.GdalUtils import GdalUtils
+
+from ntv2_transformations.transformations import it_transformation
+
+pluginPath = os.path.dirname(__file__)
+
+
+class VectorIT_ITALY_ETRS89DirInv(GdalAlgorithm):
+
+    INPUT = 'INPUT'
+    TRANSF = 'TRANSF'
+    CRS = 'CRS'
+    GRID = 'GRID'
+    OUTPUT = 'OUTPUT'
+
+    def __init__(self):
+        super().__init__()
+
+    def name(self):
+        return 'itvectortransform'
+
+    def displayName(self):
+        return '[IT] (Italy) Vector - Direct and inverse Transformation'
+
+    def group(self):
+        return '[IT] Italy'
+
+    def groupId(self):
+        return 'italy'
+
+    def tags(self):
+        return 'vector,grid,ntv2,direct,inverse,italy'.split(',')
+
+    def shortHelpString(self):
+        return 'Direct and inverse vector transformations using Globogis NTv2 grids.'
+
+    def icon(self):
+        return QIcon(os.path.join(pluginPath, 'icons', 'it.png'))
+
+    def initAlgorithm(self, config=None):
+        self.directions = ['Direct: Old Data -> ETRS89 [EPSG:4258]',
+                           'Inverse: ETRS89 [EPSG:4258] -> Old Data'
+                          ]
+
+        self.datums = (('Monte Mario - GBO Italy 1 [EPSG:3003]', 3003),
+                       ('Monte Mario - GBO Italy 2 [EPSG:3004]', 3004),
+                       ('UTM - ED50 32N [EPSG:23033]', 23032),
+                       ('UTM - ED50 33N [EPSG:23033]', 23033),
+                      )
+
+        self.grids = (('Grigliati NTv2 Globogis per la trasformazione di coordinate in Italia', 'ITALY_ETRS89'),
+                     )
+
+        self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT,
+                                                              'Input vector'))
+        self.addParameter(QgsProcessingParameterEnum(self.TRANSF,
+                                                     'Transformation',
+                                                     options=self.directions,
+                                                     defaultValue=0))
+        self.addParameter(QgsProcessingParameterEnum(self.CRS,
+                                                     'Old Datum',
+                                                     options=[i[0] for i in self.datums],
+                                                     defaultValue=0))
+        self.addParameter(QgsProcessingParameterEnum(self.GRID,
+                                                     'NTv2 Grid',
+                                                     options=[i[0] for i in self.grids],
+                                                     defaultValue=0))
+        self.addParameter(QgsProcessingParameterVectorDestination(self.OUTPUT,
+                                                                  'Output'))
+
+    def getConsoleCommands(self, parameters, context, feedback, executing=True):
+        ogrLayer, layerName = self.getOgrCompatibleSource(self.INPUT, parameters, context, feedback, executing)
+        outFile = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
+        self.setOutputValue(self.OUTPUT, outFile)
+
+        output, outputFormat = GdalUtils.ogrConnectionStringAndFormat(outFile, context)
+        if outputFormat in ('SQLite', 'GPKG') and os.path.isfile(output):
+            raise QgsProcessingException('Output file "{}" already exists.'.format(output))
+
+        direction = self.parameterAsEnum(parameters, self.TRANSF, context)
+        epsg = self.datums[self.parameterAsEnum(parameters, self.CRS, context)][1]
+        grid = self.grids[self.parameterAsEnum(parameters, self.GRID, context)][1]
+
+        found, text = it_transformation(epsg, grid)
+        if not found:
+           raise QgsProcessingException(text)
+
+        arguments = []
+
+        if direction == 0:
+            # Direct transformation
+            arguments.append('-s_srs')
+            arguments.append(text)
+            arguments.append('-t_srs')
+            arguments.append('EPSG:4258')
+
+            arguments.append('-f {}'.format(outputFormat))
+            arguments.append('-lco')
+            arguments.append('ENCODING=UTF-8')
+
+            arguments.append(output)
+            arguments.append(ogrLayer)
+            arguments.append(layerName)
+        else:
+            # Inverse transformation
+            arguments.append('-s_srs')
+            arguments.append('EPSG:4258')
+            arguments.append('-t_srs')
+            arguments.append(text)
+
+            arguments.append('-f')
+            arguments.append('Geojson')
+            arguments.append('/vsistdout/')
+            arguments.append(ogrLayer)
+            arguments.append(layerName)
+            arguments.append('-lco')
+            arguments.append('ENCODING=UTF-8')
+            arguments.append('|')
+            arguments.append('ogr2ogr')
+            arguments.append('-f {}'.format(outputFormat))
+            arguments.append('-a_srs')
+            arguments.append('EPSG:{}'.format(epsg))
+            arguments.append(output)
+            arguments.append('/vsistdin/')
+
+        if not os.path.isfile(os.path.join(pluginPath, 'grids', 'NadRoma40.gsb')):
+            urlretrieve('http://www.naturalgis.pt/downloads/ntv2grids/it_globo/NadRoma40.gsb', os.path.join(pluginPath, 'grids', 'NadRoma40.gsb'))
+            urlretrieve('http://www.naturalgis.pt/downloads/ntv2grids/it_globo/NadED50.gsb', os.path.join(pluginPath, 'grids', 'NadED50.gsb'))
+
+        return ['ogr2ogr', GdalUtils.escapeAndJoin(arguments)]
diff --git a/VectorIT_RER_ETRS89DirInv.py b/VectorIT_RER_ETRS89DirInv.py
@@ -56,13 +56,13 @@ def __init__(self):
         super().__init__()
 
     def name(self):
-        return 'itvectortransform'
+        return 'itrervectortransform'
 
     def displayName(self):
-        return '[IT] Direct and inverse Vector Transformation'
+        return '[IT] (Emilia-Romagna) Vector - Direct and inverse Transformation'
 
     def group(self):
-        return '[IT] Italy (Emilia-Romagna)'
+        return '[IT] Italy'
 
     def groupId(self):
         return 'italy'
@@ -85,7 +85,7 @@ def initAlgorithm(self, config=None):
                        ('UTM - ED50 [EPSG:23032]', 23032),
                       )
 
-        self.grids = (('Grigliati NTv2 RER 2013 la trasformazione di coordinate in Emilia-Romagna', 'RER_ETRS89'),
+        self.grids = (('Grigliati NTv2 RER 2013 per la trasformazione di coordinate in Emilia-Romagna', 'RER_ETRS89'),
                      )
 
         self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT,

diff --git a/transformations.py b/transformations.py
@@ -111,6 +111,19 @@ def it_transformation(epsg, grid):
         elif epsg == 23032:
             gridFile = os.path.join(pluginPath, 'grids', 'RER_ED50_ETRS89_GPS7_K2.GSB')
             return True, '+proj=utm +zone=32 +ellps=intl +nadgrids={} +wktext +units=m +no_defs'.format(gridFile)
+    elif grid == 'ITALY_ETRS89':
+        if epsg == 3003:
+            gridFile = os.path.join(pluginPath, 'grids', 'NadRoma40.gsb')
+            return True, '+proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl +nadgrids={} +wktext +units=m +no_defs'.format(gridFile)
+        elif epsg == 3004:
+            gridFile = os.path.join(pluginPath, 'grids', 'NadRoma40.gsb')
+            return True, '+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9996 +x_0=2520000 +y_0=0 +ellps=intl +nadgrids={} +wktext +units=m +no_defs'.format(gridFile)
+        elif epsg == 23032:
+            gridFile = os.path.join(pluginPath, 'grids', 'NadED50.gsb')
+            return True, '+proj=utm +zone=32 +ellps=intl +nadgrids={} +wktext +units=m +no_defs'.format(gridFile)
+        elif epsg == 23033:
+            gridFile = os.path.join(pluginPath, 'grids', 'NadED50.gsb')
+            return True, '+proj=utm +zone=33 +ellps=intl +nadgrids={} +wktext +units=m +no_defs'.format(gridFile)
 
     return False, NO_TRANSFORMATION