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geovallecvc.py
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geovallecvc.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
GeoValleCVC
A QGIS plugin
PlugIn para QGIS - Modelo Geoidal CVC del Valle del Cauca v2
Generated by Plugin Builder: http://g-sherman.github.io/Qgis-Plugin-Builder/
-------------------
begin : 2020-01-10
git sha : $Format:%H$
copyright : (C) 2020 by Andres Herrera
email : [email protected]
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
import os
from PyQt5.QtCore import *
from qgis.PyQt.QtCore import QSettings, QTranslator, QCoreApplication
from qgis.PyQt.QtGui import QIcon,QValidator
from PyQt5.QtGui import QDoubleValidator
from qgis.PyQt.QtWidgets import QAction, QMessageBox, QTableWidgetItem, QHeaderView, QAbstractItemView, QProgressBar, QProgressDialog
from qgis._core import Qgis, QgsRasterLayer, QgsProject,QgsMessageLog
from osgeo.gdal import *
from osgeo.gdalnumeric import *
from osgeo.gdalconst import *
# Initialize Qt resources from file resources.py
from .resources import *
# Import the code for the dialog
from .geovallecvc_dialog import GeoValleCVCDialog
import os.path
from .com.utils import *
import ogr, osr
from string import Template
from string import capwords
import datetime
import codecs
import struct
class GeoValleCVC:
"""QGIS Plugin Implementation."""
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'GeoValleCVC_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
QCoreApplication.installTranslator(self.translator)
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&GeoValleCVC')
self.dlg = GeoValleCVCDialog()
# Must be set in initGui() to survive plugin reloads
self.first_start = None
# noinspection PyMethodMayBeStatic
def tr(self, message):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate('GeoValleCVC', message)
def add_action(
self,
icon_path,
text,
callback,
enabled_flag=True,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
parent=None):
"""Add a toolbar icon to the toolbar.
:param icon_path: Path to the icon for this action. Can be a resource
path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
:type icon_path: str
:param text: Text that should be shown in menu items for this action.
:type text: str
:param callback: Function to be called when the action is triggered.
:type callback: function
:param enabled_flag: A flag indicating if the action should be enabled
by default. Defaults to True.
:type enabled_flag: bool
:param add_to_menu: Flag indicating whether the action should also
be added to the menu. Defaults to True.
:type add_to_menu: bool
:param add_to_toolbar: Flag indicating whether the action should also
be added to the toolbar. Defaults to True.
:type add_to_toolbar: bool
:param status_tip: Optional text to show in a popup when mouse pointer
hovers over the action.
:type status_tip: str
:param parent: Parent widget for the new action. Defaults None.
:type parent: QWidget
:param whats_this: Optional text to show in the status bar when the
mouse pointer hovers over the action.
:returns: The action that was created. Note that the action is also
added to self.actions list.
:rtype: QAction
"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if add_to_toolbar:
# Adds plugin icon to Plugins toolbar
self.iface.addToolBarIcon(action)
if add_to_menu:
self.iface.addPluginToMenu(
self.menu,
action)
self.actions.append(action)
return action
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
icon_path = ':/plugins/geovallecvc/icon.png'
self.add_action(
icon_path,
text=self.tr(u'GeoValleCVC'),
callback=self.run,
parent=self.iface.mainWindow())
self.dlg.close_btn.clicked.connect(self.closeDlg)
self.dlg.calcCoordPlanas.clicked.connect(self.calcCoordPlanasAction)
self.dlg.calcCoordArena.clicked.connect(self.calcCoordArenaAction)
self.dlg.calcCoordDMS.clicked.connect(self.calcCoordDMSAction)
self.dlg.calcCoordDeg.clicked.connect(self.calcCoordDegAction)
self.dlg.clearForm1Btn.clicked.connect(self.clearForm1)
self.dlg.clearForm2Btn.clicked.connect(self.clearForm2)
self.dlg.clearForm3Btn.clicked.connect(self.clearForm3)
self.dlg.clearForm4Btn.clicked.connect(self.clearForm4)
# will be set False in run()
self.first_start = True
def closeDlg(self):
self.dlg.close()
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
for action in self.actions:
self.iface.removePluginMenu(
self.tr(u'&GeoValleCVC'),
action)
self.iface.removeToolBarIcon(action)
def run(self):
self.dlg.show()
result = self.dlg.exec_()
if result:
pass
def calcCoordPlanasAction(self):
if self.dlg.cp_n.text().strip() and self.dlg.cp_e.text().strip():
self.readRaster_Planas()
else:
QMessageBox.critical(None,"Mensaje", u"Debe indicar unas coordenadas !")
def calcCoordArenaAction(self):
if self.dlg.ca_n.text().strip() and self.dlg.ca_e.text().strip():
self.readRaster_Arena()
else:
QMessageBox.critical( None,"Mensaje", u"Debe indicar unas coordenadas !")
def calcCoordDegAction(self):
if self.dlg.cgd_w.text().strip() and self.dlg.cgd_n.text().strip():
self.readRaster_GeograficasDecimales()
else:
QMessageBox.critical( None,"Mensaje", u"Debe indicar unas coordenadas !")
def calcCoordDMSAction(self):
if self.dlg.cgms_lon_g.text().strip() and self.dlg.cgms_lon_m.text().strip() and self.dlg.cgms_lon_s.text().strip() and self.dlg.cgms_lat_g.text().strip() and self.dlg.cgms_lat_m.text().strip() and self.dlg.cgms_lat_s.text().strip():
self.readRaster_GeograficasGMS()
else:
QMessageBox.critical( None,"Mensaje", u"Debe indicar unas coordenadas !")
def clearForm1(self):
self.dlg.cp_e.setText("")
self.dlg.cp_n.setText("")
self.dlg.cp_r.setText("")
def clearForm2(self):
self.dlg.ca_e.setText("")
self.dlg.ca_n.setText("")
self.dlg.ca_r.setText("")
def clearForm3(self):
self.dlg.cgms_lon_g.setText("")
self.dlg.cgms_lon_m.setText("")
self.dlg.cgms_lon_s.setText("")
self.dlg.cgms_lat_g.setText("")
self.dlg.cgms_lat_m.setText("")
self.dlg.cgms_lat_s.setText("")
self.dlg.cgms_r.setText("")
def clearForm4(self):
self.dlg.cgd_w.setText("")
self.dlg.cgd_n.setText("")
self.dlg.cgd_r.setText("")
def coordsCalculator(self,x,y,iepsg,oepsg):
self.plugin_dir = os.path.dirname(__file__)
fileName=os.path.join(self.plugin_dir, 'geoid','geoide_1mm_w.tif')
QgsMessageLog.logMessage(fileName)
ds = gdal.Open(fileName, GA_ReadOnly )
if ds is None:
QMessageBox.critical( None,"Error", "No se pudo abrir el Geoide !")
pointX = float(x)
pointY = float(y)
QgsMessageLog.logMessage(str(pointX)+","+str(pointY))
# Spatial Reference System
inputEPSG = iepsg
outputEPSG = oepsg
# create a geometry from coordinates
point = ogr.Geometry(ogr.wkbPoint)
point.AddPoint(pointY,pointX)
# create coordinate transformation
inSpatialRef = osr.SpatialReference()
inSpatialRef.ImportFromEPSG(inputEPSG)
outSpatialRef = osr.SpatialReference()
outSpatialRef.ImportFromEPSG(outputEPSG)
coordTransform = osr.CoordinateTransformation(inSpatialRef, outSpatialRef)
# transform point
point.Transform(coordTransform)
# print point in EPSG 4326
x=point.GetY()
y=point.GetX()
#QgsMessageLog.logMessage("x:"+str(x)+",y:"+str(y))
transf = ds.GetGeoTransform()
#QgsMessageLog.logMessage("transf:"+str(transf))
cols = ds.RasterXSize
rows = ds.RasterYSize
bands = ds.RasterCount #1
band = ds.GetRasterBand(1)
bandtype = gdal.GetDataTypeName(band.DataType) #Int16
driver = ds.GetDriver().LongName #'GeoTIFF'
# set a default NDV if none specified
if (band.GetNoDataValue() == None):
band.SetNoDataValue(-9999)
ndv = band.GetNoDataValue()
cellSizeX = transf[1]
cellSizeY = -1 * transf[5]
minx = transf[0]
maxy = transf[3]
maxx = minx + (cols * cellSizeX)
miny = maxy - (rows * cellSizeY)
if ((x < minx) or (x > maxx) or (y < miny) or (y > maxy)):
QMessageBox.critical( None,"Error", "El punto indicado no se encuentra dentro del Geoide del Valle!")
QgsMessageLog.logMessage('given point does not fall within grid')
return ndv
# calc point location in pixels
xLoc = (x - minx) / cellSizeX
xLoc = int(xLoc)
yLoc = (maxy - y) / cellSizeY
yLoc = int(yLoc)
if ((xLoc < 0.5) or (xLoc > cols - 0.5)):
return ndv
if ((yLoc < 0.5) or (yLoc > rows - 0.5)):
return ndv
structval = band.ReadRaster(xLoc, yLoc, 1, 1, 1, 1, buf_type = band.DataType )
if (bandtype == 'Int16'):
dblValue = struct.unpack('h', structval)
elif (bandtype == 'Float32'):
dblValue = struct.unpack('f', structval)
elif (bandtype == 'Byte'):
dblValue = struct.unpack('B', structval)
else:
QMessageBox.critical( None,"Error", 'unrecognized DataType: ' +bandtype )
return ndv
return dblValue[0]
def readRaster_Planas(self):
QgsMessageLog.logMessage("Calcular Ondulacion Geoidal - Coordenadas planas MAGNA")
self.dlg.cp_e.setValidator(QDoubleValidator())
self.dlg.cp_n.setValidator(QDoubleValidator())
pointX = float(self.dlg.cp_e.text())
pointY = float(self.dlg.cp_n.text())
inputEPSG = 3115
outputEPSG = 4326
result=self.coordsCalculator(pointX,pointY,inputEPSG,outputEPSG)
QgsMessageLog.logMessage("Result: "+str( result ) )
self.dlg.cp_r.setText( str( result ) )
QMessageBox.information( None,"Resultado", u"Ondulación geoidal calculada !")
def readRaster_Arena(self):
QgsMessageLog.logMessage("Calcular Ondulacion Geoidal - Coordenadas planas ARENA")
self.dlg.ca_e.setValidator(QDoubleValidator())
self.dlg.ca_n.setValidator(QDoubleValidator())
pointX = float(self.dlg.ca_e.text())
pointY = float(self.dlg.ca_n.text())
inputEPSG = 21896
outputEPSG = 4326
result=self.coordsCalculator(pointX,pointY,inputEPSG,outputEPSG)
QgsMessageLog.logMessage("Result: "+str( result ) )
self.dlg.ca_r.setText( str( result ) )
QMessageBox.information( None,"Resultado", u"Ondulación geoidal calculada !")
def readRaster_GeograficasGMS(self):
QgsMessageLog.logMessage("Calcular Ondulacion Geoidal - Coordenadas Geograficas DMS")
self.dlg.cgms_lon_g.setValidator(QDoubleValidator())
self.dlg.cgms_lon_m.setValidator(QDoubleValidator())
self.dlg.cgms_lon_s.setValidator(QDoubleValidator())
self.dlg.cgms_lat_g.setValidator(QDoubleValidator())
self.dlg.cgms_lat_m.setValidator(QDoubleValidator())
self.dlg.cgms_lat_s.setValidator(QDoubleValidator())
lon_g=float(self.dlg.cgms_lon_g.text())
lon_m=float(self.dlg.cgms_lon_m.text())
lon_s=float(self.dlg.cgms_lon_s.text())
lat_g=float(self.dlg.cgms_lat_g.text())
lat_m=float(self.dlg.cgms_lat_m.text())
lat_s=float(self.dlg.cgms_lat_s.text())
x=(abs(lon_g) + (abs(lon_m)/60)+(abs(lon_s)/3600))*-1;
y=(abs(lat_g) + (abs(lat_m)/60)+(abs(lat_s)/3600));
pointX = float(x)
pointY = float(y)
inputEPSG = 4326
outputEPSG = 4326
result=self.coordsCalculator(pointX,pointY,inputEPSG,outputEPSG)
QgsMessageLog.logMessage("Result: "+str( result ) )
self.dlg.cgms_r.setText( str( result ) )
QMessageBox.information( None,"Resultado", u"Ondulación geoidal calculada !")
def readRaster_GeograficasDecimales(self):
QgsMessageLog.logMessage("Calcular Ondulacion Geoidal - Coordenadas Geograficas DMS")
self.dlg.cgd_w.setValidator(QDoubleValidator())
self.dlg.cgd_n.setValidator(QDoubleValidator())
x=float(self.dlg.cgd_w.text())
y=float(self.dlg.cgd_n.text())
pointX = float(x)
pointY = float(y)
inputEPSG = 4326
outputEPSG = 4326
result=self.coordsCalculator(pointX,pointY,inputEPSG,outputEPSG)
QgsMessageLog.logMessage("Result: "+str( result ) )
self.dlg.cgd_r.setText( str( result ) )
QMessageBox.information( None,"Resultado", u"Ondulación geoidal calculada !")