# -*- coding: utf-8 -*-
"""
/***************************************************************************
 SUEWSAnalyzer
                                 A QGIS plugin
 This plugin analyzes performs bacis analysis of model output from the SUEWS model
                              -------------------
        begin                : 2016-11-20
        git sha              : $Format:%H$
        copyright            : (C) 2016 by Fredrik Lindberg
        email                : fredrikl@gvc.gu.se
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
"""
from __future__ import print_function
from __future__ import absolute_import
from builtins import str
from builtins import range
from builtins import object
from qgis.PyQt.QtCore import QSettings, QTranslator, qVersion, QVariant, QCoreApplication
from qgis.PyQt.QtWidgets import QAction, QFileDialog, QMessageBox
from qgis.PyQt.QtGui import QIcon
from qgis.PyQt import QtGui
from qgis.core import *
from qgis.gui import *
# Initialize Qt resources from file resources.py
# from . import resources_rc
# Import the code for the dialog
from .suews_analyzer_dialog import SUEWSAnalyzerDialog
import os.path
import webbrowser
from osgeo import gdal
from osgeo.gdalconst import *
from ..Utilities import f90nml
import numpy as np
from ..suewsmodel import suewsdataprocessing
from ..suewsmodel import suewsplotting
import sys
import subprocess
import datetime

try:
    import matplotlib.pylab as plt
    import matplotlib.dates as dt
    nomatplot = 0
except ImportError:
    nomatplot = 1
    pass


class SUEWSAnalyzer(object):
    """QGIS Plugin Implementation."""

    def __init__(self, iface):

        # 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',
            'SUEWSAnalyzer_{}.qm'.format(locale))

        if os.path.exists(locale_path):
            self.translator = QTranslator()
            self.translator.load(locale_path)

            if qVersion() > '4.3.3':
                QCoreApplication.installTranslator(self.translator)

        # Create the dialog (after translation) and keep reference
        self.dlg = SUEWSAnalyzerDialog()
        # self.layerComboManagerPolygrid = VectorLayerCombo(self.dlg.comboBox_Polygrid, initLayer="",
        #                                                   options={"geomType": QGis.Polygon})
        # fieldgen = VectorLayerCombo(self.dlg.comboBox_Polygrid, initLayer="", options={"geomType": QGis.Polygon})
        # self.layerComboManagerPolyField = FieldCombo(self.dlg.comboBox_Field, fieldgen)
        self.layerComboManagerPolygrid = QgsMapLayerComboBox(self.dlg.widgetPolygrid)
        self.layerComboManagerPolygrid.setCurrentIndex(-1)
        self.layerComboManagerPolygrid.setFilters(QgsMapLayerProxyModel.PolygonLayer)
        self.layerComboManagerPolygrid.setFixedWidth(175)
        self.layerComboManagerPolyfield = QgsFieldComboBox(self.dlg.widgetField)
        self.layerComboManagerPolyfield.setFilters(QgsFieldProxyModel.Numeric)
        self.layerComboManagerPolygrid.layerChanged.connect(self.layerComboManagerPolyfield.setLayer)

        self.dlg.pushButtonHelp.clicked.connect(self.help)
        self.dlg.pushButtonRunControl.clicked.connect(self.get_runcontrol)
        self.dlg.pushButtonSave.clicked.connect(self.geotiff_save)
        self.dlg.runButtonPlot.clicked.connect(self.plotpoint)
        self.dlg.runButtonSpatial.clicked.connect(self.spatial)

        self.dlg.comboBox_POIField.activated.connect(self.changeGridPOI)
        self.dlg.comboBox_POIYYYY.activated.connect(self.changeYearPOI)
        self.dlg.comboBox_SpatialYYYY.activated.connect(self.changeYearSP)

        self.fileDialog = QFileDialog()
        self.fileDialognml = QFileDialog()
        self.fileDialognml.setNameFilter("(RunControl.nml)")

        # Declare instance attributes
        self.actions = []
        self.menu = self.tr(u'&SUEWS Analyzer')
        # TODO: We are going to let the user set this up in a future iteration
        # self.toolbar = self.iface.addToolBar(u'SUEWSAnalyzer')
        # self.toolbar.setObjectName(u'SUEWSAnalyzer')

        self.outputfile = None
        self.unit = None
        self.resout = None
        self.fileCode = None
        self.gridcodemetmat = []

    # noinspection PyMethodMayBeStatic
    def tr(self, message):
        return QCoreApplication.translate('SUEWSAnalyzer', 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):

        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:
            self.toolbar.addAction(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/SUEWSAnalyzer/icon.png'
        self.add_action(
            icon_path,
            text=self.tr(u''),
            callback=self.run,
            parent=self.iface.mainWindow())

    def unload(self):
        """Removes the plugin menu item and icon from QGIS GUI."""
        for action in self.actions:
            self.iface.removePluginMenu(
                self.tr(u'&SUEWS Analyzer'),
                action)
            self.iface.removeToolBarIcon(action)
        # remove the toolbar
        del self.toolbar

    def run(self):
        self.dlg.show()
        self.dlg.exec_()
        self.clearentries()
        self.dlg.textModelFolder.clear()

    def clearentries(self):
        # clear old entries
        self.dlg.comboBox_POIField.clear()
        self.dlg.comboBox_POIYYYY.clear()
        self.dlg.comboBox_POIDOYMin.clear()
        self.dlg.comboBox_POIDOYMax.clear()
        self.dlg.comboBox_POIVariable.clear()
        self.dlg.comboBox_POIField_2.clear()
        self.dlg.comboBox_POIVariable_2.clear()
        self.dlg.comboBox_POIField.addItem('Not Specified')
        self.dlg.comboBox_POIYYYY.addItem('Not Specified')
        self.dlg.comboBox_POIDOYMin.addItem('Not Specified')
        self.dlg.comboBox_POIDOYMax.addItem('Not Specified')
        self.dlg.comboBox_POIVariable.addItem('Not Specified')
        self.dlg.comboBox_POIField_2.addItem('Not Specified')
        self.dlg.comboBox_POIVariable_2.addItem('Not Specified')
        self.dlg.comboBox_SpatialVariable.clear()
        self.dlg.comboBox_SpatialYYYY.clear()
        self.dlg.comboBox_SpatialDOYMin.clear()
        self.dlg.comboBox_SpatialDOYMax.clear()
        self.dlg.textOutput.clear()
        self.dlg.comboBox_SpatialVariable.addItem('Not Specified')
        self.dlg.comboBox_SpatialYYYY.addItem('Not Specified')
        self.dlg.comboBox_SpatialDOYMin.addItem('Not Specified')
        self.dlg.comboBox_SpatialDOYMax.addItem('Not Specified')
        self.dlg.textOutput.setText('Not Specified')

    def get_runcontrol(self):

        self.clearentries()

        self.fileDialognml.open()
        result = self.fileDialognml.exec_()
        if result == 1:
            self.nmlPath = self.fileDialognml.selectedFiles()
            self.dlg.textModelFolder.setText(self.nmlPath[0])
            nml = f90nml.read(self.nmlPath[0])

            self.fileinputpath = nml['runcontrol']['fileinputpath']
            if self.fileinputpath.startswith("."):
                nmlfolder = self.nmlPath[0][:-15]
                self.fileinputpath = nmlfolder + self.fileinputpath[1:]

            self.fileoutputpath = nml['runcontrol']['fileoutputpath']
            if self.fileoutputpath.startswith("."):
                nmlfolder = self.nmlPath[0][:-15]
                self.fileoutputpath = nmlfolder + self.fileoutputpath[1:]

            resolutionFilesOut = nml['runcontrol']['resolutionfilesout']
            self.resout = int(float(resolutionFilesOut) / 60)
            self.fileCode = nml['runcontrol']['filecode']
            self.multiplemetfiles = nml['runcontrol']['multiplemetfiles']
            resolutionFilesIn = nml['runcontrol']['resolutionFilesIn']
            self.resin = int(resolutionFilesIn / 60)

            tstep = nml['runcontrol']['tstep']
            self.tstep = int(float(tstep) / 60)

            mm = 0
            while mm < 60:
                self.dlg.comboBox_mm.addItem(str(mm))
                mm += self.resout

            sitein = self.fileinputpath + 'SUEWS_SiteSelect.txt'
            f = open(sitein)
            lin = f.readlines()
            self.YYYY = -99
            self.gridcodemetID = -99
            index = 2
            loop_out = ''
            gridcodemetmat = [0]
            while loop_out != '-9':
                lines = lin[index].split()
                if not int(lines[1]) == self.YYYY:
                    self.YYYY = int(lines[1])
                    self.dlg.comboBox_POIYYYY.addItem(str(self.YYYY))
                    self.dlg.comboBox_SpatialYYYY.addItem(str(self.YYYY))

                if not np.any(int(lines[0]) == gridcodemetmat):
                    self.gridcodemetID = int(lines[0])
                    self.dlg.comboBox_POIField.addItem(str(self.gridcodemetID))
                    self.dlg.comboBox_POIField_2.addItem(str(self.gridcodemetID))
                    gridtemp = [self.gridcodemetID]
                    gridcodemetmat = np.vstack((gridcodemetmat, gridtemp))

                if index == 2:
                    if self.multiplemetfiles == 0:
                        self.gridcodemet = ''
                    else:
                        self.gridcodemet = lines[0]
                    data_in = self.fileinputpath + self.fileCode + self.gridcodemet + '_' + str(self.YYYY) + '_data_' + str(self.resin) + '.txt'
                    self.met_data = np.genfromtxt(data_in, skip_header=1, missing_values='**********', filling_values=-9999)  # , skip_footer=2

                lines = lin[index + 1].split()
                loop_out = lines[0]
                index += 1

            f.close()
            self.idgrid = gridcodemetmat[1:, :]

            dataunit = self.plugin_dir + '/SUEWS_OutputFormatOption1.txt'  # File moved to plugin directory
            f = open(dataunit)
            lin = f.readlines()
            self.lineunit = lin[3].split(";")
            self.linevar = lin[1].split(";")
            self.linevarlong = lin[2].split(";")
            f.close()

            for i in range(0, self.linevarlong.__len__()):
                self.dlg.comboBox_POIVariable.addItem(self.linevarlong[i])
                self.dlg.comboBox_POIVariable_2.addItem(self.linevarlong[i])
                self.dlg.comboBox_SpatialVariable.addItem(self.linevarlong[i])

            self.dlg.runButtonPlot.setEnabled(1)
            self.dlg.runButtonSpatial.setEnabled(1)

    def changeGridPOI(self):
        self.dlg.comboBox_POIYYYY.setCurrentIndex(0)
        self.dlg.comboBox_POIDOYMin.setCurrentIndex(0)
        self.dlg.comboBox_POIDOYMax.setCurrentIndex(0)

    def changeYearPOI(self):
        self.dlg.comboBox_POIDOYMin.clear()
        self.dlg.comboBox_POIDOYMax.clear()
        self.dlg.comboBox_POIDOYMin.addItem('Not Specified')
        self.dlg.comboBox_POIDOYMax.addItem('Not Specified')

        self.YYYY = self.dlg.comboBox_POIYYYY.currentText()

        if self.multiplemetfiles == 0:
            self.gridcodemet = ''
        else:
            self.gridcodemet = self.dlg.comboBox_POIField.currentText()

        if not self.dlg.comboBox_POIYYYY.currentText() == 'Not Specified':
            # print self.dlg.comboBox_POIField.currentText()
            # print self.dlg.comboBox_POIField.currentIndex()
            data_in = self.fileinputpath + self.fileCode + self.gridcodemet + '_' + str(self.YYYY) + '_data_' + str(
                self.resin) + '.txt'
            self.met_data = np.genfromtxt(data_in, skip_header=1, missing_values='**********', filling_values=-9999)

            if np.min(self.met_data[:, 0]) - np.max(self.met_data[:, 0]) < 0:
                minis = np.min(self.met_data[:-1, 1])
                maxis = np.max(self.met_data[:, 1])
            else:
                minis = np.min(self.met_data[:, 1])
                maxis = np.max(self.met_data[:, 1])

            for i in range(int(minis), int(maxis) + 2):
                    self.dlg.comboBox_POIDOYMin.addItem(str(i))
                    self.dlg.comboBox_POIDOYMax.addItem(str(i))

    def changeYearSP(self):
        self.dlg.comboBox_SpatialDOYMin.clear()
        self.dlg.comboBox_SpatialDOYMax.clear()
        self.dlg.comboBox_SpatialDOYMin.addItem('Not Specified')
        self.dlg.comboBox_SpatialDOYMax.addItem('Not Specified')

        self.YYYY = self.dlg.comboBox_SpatialYYYY.currentText()

        data_in = self.fileinputpath + self.fileCode + self.gridcodemet + '_' + str(self.YYYY) + '_data_' + str(
            self.resin) + '.txt'
        self.met_data = np.genfromtxt(data_in, skip_header=1, missing_values='**********', filling_values=-9999)

        if np.min(self.met_data[:, 0]) - np.max(self.met_data[:, 0]) < 0:
            minis = np.min(self.met_data[:-1, 1])
            maxis = np.max(self.met_data[:, 1])
        else:
            minis = np.min(self.met_data[:, 1])
            maxis = np.max(self.met_data[:, 1])

        for i in range(int(minis), int(maxis) + 2):
            self.dlg.comboBox_SpatialDOYMin.addItem(str(i))
            self.dlg.comboBox_SpatialDOYMax.addItem(str(i))

    def geotiff_save(self):
        self.outputfile = self.fileDialog.getSaveFileName(None, "Save File As:", None, "GeoTIFF (*.tif)")
        self.dlg.textOutput.setText(self.outputfile[0])

    def get_unit(self):
        uni = self.lineunit[self.id]
        if uni == 'W m-2':
            self.unit = '$W$'' ''$m ^{-2}$'
        elif uni == 'mm':
            self.unit = '$mm$'
        elif uni == 'degC':
            self.unit = '$^{o}C$'
        elif uni == 'deg':
            self.unit = '$Degrees(^{o})$'
        elif uni == '-':
            self.unit = '$-$'
        elif uni == 'm2 m-2':
            self.unit = '$m ^{2}$'' ''$m ^{-2}$'
        elif uni == 'm':
            self.unit = '$m$'
        elif uni == 'm s-1':
            self.unit = '$m$'' ''$s ^{-1}$'
        elif uni == 'umol m-2 s-1':
            self.unit = '$umol ^{2}$'' ''$m ^{-2}$'' ''$s ^{-1}$'
        elif uni == 'YYYY':
            self.unit = '$Year$'
        elif uni == 'DOY':
            self.unit = '$Day of Year$'
        elif uni == 'HH':
            self.unit = '$Hour$'
        elif uni == 'mm':
            self.unit = '$Minute$'
        elif uni == 'day':
            self.unit = '$Decimal Time$'

    def spatial(self):
        # self.iface.messageBar().pushMessage("SUEWS Analyzer", "Generating statistics grid", duration=5)

        if self.dlg.comboBox_SpatialVariable.currentText() == 'Not Specified':
            QMessageBox.critical(self.dlg, "Error", "No analyzing variable is selected")
            return
        else:
            self.id = self.dlg.comboBox_SpatialVariable.currentIndex() - 1

        if self.dlg.comboBox_SpatialYYYY.currentText() == 'Not Specified':
            QMessageBox.critical(self.dlg, "Error", "No Year is selected")
            return

        if self.dlg.comboBox_SpatialDOYMin.currentText() == 'Not Specified':
            QMessageBox.critical(self.dlg, "Error", "No Minimum DOY is selected")
            return

        if self.dlg.comboBox_SpatialDOYMax.currentText() == 'Not Specified':
            QMessageBox.critical(self.dlg, "Error", "No Maximum DOY is selected")
            return

        poly = self.layerComboManagerPolygrid.currentLayer()
        if poly is None:
            QMessageBox.critical(self.dlg, "Error", "No valid Polygon layer is selected")
            return
        if not poly.geometryType() == 2:
            QMessageBox.critical(self.dlg, "Error", "No valid Polygon layer is selected")
            return

        poly_field = self.layerComboManagerPolyfield.currentField()
        if poly_field is None:
            QMessageBox.critical(self.dlg, "Error", "An attribute with unique fields/records must be selected (same as used in the model run to analyze)")
            return

        if not (self.dlg.addResultToGrid.isChecked() or self.dlg.addResultToGeotiff.isChecked()):
            QMessageBox.critical(self.dlg, "Error", "No output method has been selected (Add results to polygon grid OR Save as GeoTIFF)")
            return

        if self.dlg.comboBox_SpatialDOYMin.currentText() == 'Not Specified':
            QMessageBox.critical(self.dlg, "Error", "No Minimum DOY is selected")
            return
        else:
            startday = int(self.dlg.comboBox_SpatialDOYMin.currentText())

        if self.dlg.comboBox_SpatialDOYMax.currentText() == 'Not Specified':
            QMessageBox.critical(self.dlg, "Error", "No Maximum DOY is selected")
            return
        else:
            endday = int(self.dlg.comboBox_SpatialDOYMax.currentText())

        if startday > endday:
            QMessageBox.critical(self.dlg, "Error", "Start day happens after end day")
            return

        if startday == endday:
            QMessageBox.critical(self.dlg, "Error", "End day must be higher than start day")
            return

        if self.dlg.checkBox_TOD.isChecked():
            if self.dlg.comboBox_HH.currentText() == ' ':
                QMessageBox.critical(self.dlg, "Error", "No Hour specified")
                return
            if self.dlg.comboBox_mm.currentText() == ' ':
                QMessageBox.critical(self.dlg, "Error", "No Minute specified")
                return

        # load, cut data and calculate statistics
        statvectemp = [0]
        statresult = [0]
        idvec = [0]

        vlayer = QgsVectorLayer(poly.source(), "polygon", "ogr")
        prov = vlayer.dataProvider()
        fields = prov.fields()
        # idx = vlayer.fieldNameIndex(poly_field)
        idx = vlayer.fields().indexFromName(poly_field)
        typetest = fields.at(idx).type()
        if typetest == 10:
            QMessageBox.critical(self.dlg, "ID field is sting type", "ID field must be either integer or float")
            return

        # for i in range(0, self.idgrid.shape[0]): # loop over vector grid instead
        for f in vlayer.getFeatures():
            # gid = str(self.idgrid[i, 0])
            gid = str(f.attributes()[idx])
            datawhole = np.genfromtxt(self.fileoutputpath + '/' + self.fileCode + gid + '_'
                                     + str(self.YYYY) + '_SUEWS_' + str(self.resout) + '.txt', skip_header=1,
                                     missing_values='**********', filling_values=-9999)

            writeoption = datawhole.shape[1]
            if writeoption > 38:
                altpos = 52
            else:
                altpos = 25

            start = np.min(np.where(datawhole[:, 1] == startday))
            if endday > np.max(datawhole[:, 1]):
                ending = np.max(np.where(datawhole[:, 1] == endday - 1))
            else:
                ending = np.min(np.where(datawhole[:, 1] == endday))
            data1 = datawhole[start:ending, :]

            if self.dlg.checkBox_TOD.isChecked():
                hh = self.dlg.comboBox_HH.currentText()
                hhdata = np.where(data1[:, 2] == int(hh))
                data1 = data1[hhdata, :]
                minute = self.dlg.comboBox_mm.currentText()
                mmdata = np.where(data1[0][:, 3] == int(minute))
                data1 = data1[0][mmdata, :]
                data1 = data1[0][:]
            else:
                if self.dlg.radioButtonDaytime.isChecked():
                    data1 = data1[np.where(data1[:, altpos] < 90.), :]
                    data1 = data1[0][:]
                if self.dlg.radioButtonNighttime.isChecked():
                    data1 = data1[np.where(data1[:, altpos] > 90.), :]
                    data1 = data1[0][:]

            vardata = data1[:, self.id]

            if self.dlg.radioButtonMean.isChecked():
                statresult = np.nanmean(vardata)
            if self.dlg.radioButtonMin.isChecked():
                statresult = np.nanmin(vardata)
            if self.dlg.radioButtonMax.isChecked():
                statresult = np.nanmax(vardata)
            if self.dlg.radioButtonMed.isChecked():
                statresult = np.nanmedian(vardata)
            if self.dlg.radioButtonIQR.isChecked():
                statresult = np.nanpercentile(vardata, 75) - np.percentile(vardata, 25)

            statvectemp = np.vstack((statvectemp, statresult))
            idvec = np.vstack((idvec, int(gid)))

        statvector = statvectemp[1:, :]
        # fix_print_with_import
        statmat = np.hstack((idvec[1:, :], statvector))

        numformat2 = '%8d %5.3f'
        header2 = 'id value'
        np.savetxt(self.plugin_dir + 'test.txt', statmat,
                   fmt=numformat2, delimiter=' ', header=header2, comments='')

        header = self.linevar[self.id]
        if self.dlg.addResultToGrid.isChecked():
            self.addattributes(vlayer, statmat, header)

        if self.dlg.addResultToGeotiff.isChecked():
            extent = vlayer.extent()
            xmax = extent.xMaximum()
            xmin = extent.xMinimum()
            ymax = extent.yMaximum()
            ymin = extent.yMinimum()

            if self.dlg.checkBoxIrregular.isChecked():
                resx = self.dlg.doubleSpinBoxRes.value()
            else:
                for f in vlayer.getFeatures():  # Taking first polygon. Could probably be done nicer
                    # geom = f.geometry().asPolygon()
                    geom = f.geometry().asMultiPolygon()
                    break
                resx = np.abs(geom[0][0][0][0] - geom[0][0][2][0])  # x
                resy = np.abs(geom[0][0][0][1] - geom[0][0][2][1])  # y

                if not resx == resy:
                    QMessageBox.critical(self.dlg, "Error", "Polygons not squared in current CRS")
                    return

            # polyname = self.dlg.comboBox_Polygrid.currentText()
            polyname = self.layerComboManagerPolygrid.currentText()
            if self.dlg.textOutput.text() == 'Not Specified':
                QMessageBox.critical(self.dlg, "Error", "No output filename for GeoTIFF is added")
                return
            else:
                filename = self.dlg.textOutput.text()

            # Check OS and dep
            if sys.platform == 'darwin':
                gdalrast_os_dep = '/Library/Frameworks/GDAL.framework/Versions/Current/Programs/gdal_rasterize'
            else:
                gdalrast_os_dep = 'gdal_rasterize'

            gdalraster = gdalrast_os_dep + ' -a ' + str(poly_field) + ' -ot Float32 -of GTiff -te ' + str(xmin) + ' ' \
                         + str(ymin) + ' ' + str(xmax) + ' ' + str(ymax) + ' -tr ' + str(resx) + ' ' + str(resx) + \
                         ' -co COMPRESS=DEFLATE -co PREDICTOR=1 -co ZLEVEL=5 -l ' + polyname + ' "' + \
                         poly.source() + '" "' + self.plugin_dir + '/tempgrid.tif"'

            if sys.platform == 'win32':
                si = subprocess.STARTUPINFO()
                si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
                subprocess.call(gdalraster, startupinfo=si)
            else:
                os.system(gdalraster)

            dataset = gdal.Open(self.plugin_dir + '/tempgrid.tif')
            idgrid_array = dataset.ReadAsArray().astype(np.float)

            gridout = np.zeros((idgrid_array.shape[0], idgrid_array.shape[1]))

            for i in range(0, statmat.shape[0]):
                gridout[idgrid_array == statmat[i, 0]] = statmat[i, 1]

            self.saveraster(dataset, filename, gridout)

            # load result into canvas
            if self.dlg.checkBoxIntoCanvas.isChecked():
                rlayer = self.iface.addRasterLayer(filename)

                # Set opacity
                rlayer.renderer().setOpacity(1.0)

                # # Set colors
                s = QgsRasterShader()
                c = QgsColorRampShader()
                c.setColorRampType(QgsColorRampShader.Interpolated)
                i = []
                i.append(QgsColorRampShader.ColorRampItem(np.nanmin(gridout), QtGui.QColor('#2b83ba'), str(np.nanmin(gridout))))
                i.append(QgsColorRampShader.ColorRampItem(np.nanmedian(gridout), QtGui.QColor('#ffffbf'), str(np.nanmedian(gridout))))
                i.append(QgsColorRampShader.ColorRampItem(np.nanmax(gridout), QtGui.QColor('#d7191c'),str(np.nanmax(gridout))))
                c.setColorRampItemList(i)
                s.setRasterShaderFunction(c)
                ps = QgsSingleBandPseudoColorRenderer(rlayer.dataProvider(), 1, s)
                rlayer.setRenderer(ps)

                # Trigger a repaint
                if hasattr(rlayer, "setCacheImage"):
                    rlayer.setCacheImage(None)
                rlayer.triggerRepaint()

        QMessageBox.information(self.dlg, "SUEWS Analyser", "Process completed")

    def saveraster(self, gdal_data, filename, raster):
        rows = gdal_data.RasterYSize
        cols = gdal_data.RasterXSize

        outDs = gdal.GetDriverByName("GTiff").Create(filename, cols, rows, int(1), GDT_Float32)
        outBand = outDs.GetRasterBand(1)

        # write the data
        outBand.WriteArray(raster, 0, 0)
        # flush data to disk, set the NoData value and calculate stats
        outBand.FlushCache()
        outBand.SetNoDataValue(-9999)

        # georeference the image and set the projection
        outDs.SetGeoTransform(gdal_data.GetGeoTransform())
        outDs.SetProjection(gdal_data.GetProjection())

        del outDs, outBand

    def addattributes(self, vlayer, matdata, header):
        current_index_length = len(vlayer.dataProvider().attributeIndexes())
        caps = vlayer.dataProvider().capabilities()

        if caps & QgsVectorDataProvider.AddAttributes:
            vlayer.dataProvider().addAttributes([QgsField(header, QVariant.Double)])
            attr_dict = {}
            for y in range(0, matdata.shape[0]):
                attr_dict.clear()
                idx = int(matdata[y, 0])
                attr_dict[current_index_length] = float(matdata[y, 1])
                vlayer.dataProvider().changeAttributeValues({y: attr_dict})

            vlayer.updateFields()
        else:
            QMessageBox.critical(None, "Error", "Vector Layer does not support adding attributes")

    def plotpoint(self):
        self.varpoi1 = self.dlg.comboBox_POIField.currentText()

        if self.dlg.comboBox_POIField.currentText() == 'Not Specified':
            QMessageBox.critical(self.dlg, "Error", "No Grid ID is selected")
            return

        if self.dlg.comboBox_POIYYYY.currentText() == 'Not Specified':
            QMessageBox.critical(self.dlg, "Error", "No Year is selected")
            return

        if not self.dlg.checkboxPlotBasic.isChecked():

            if self.dlg.comboBox_POIDOYMin.currentText() == 'Not Specified':
                QMessageBox.critical(self.dlg, "Error", "No Minimum DOY is selected")
                return
            else:
                startday = int(self.dlg.comboBox_POIDOYMin.currentText())

            if self.dlg.comboBox_POIDOYMax.currentText() == 'Not Specified':
                QMessageBox.critical(self.dlg, "Error", "No Maximum DOY is selected")
                return
            else:
                endday = int(self.dlg.comboBox_POIDOYMax.currentText())

            if startday > endday:
                QMessageBox.critical(self.dlg, "Error", "Start day happens after end day")
                return

            if startday == endday:
                QMessageBox.critical(self.dlg, "Error", "End day must be higher than start day")
                return

            datawhole = np.genfromtxt(self.fileoutputpath + '/' + self.fileCode + self.varpoi1 + '_' +
                                      str(self.YYYY) + '_SUEWS_' + str(self.resout) + '.txt', skip_header=1,
                                      missing_values='**********', filling_values=-9999)

            start = np.min(np.where(datawhole[:, 1] == startday))
            if endday > np.max(datawhole[:, 1]):
                ending = np.max(np.where(datawhole[:, 1] == endday - 1))
            else:
                ending = np.min(np.where(datawhole[:, 1] == endday))
            data1 = datawhole[start:ending, :]

            if self.dlg.comboBox_POIVariable.currentText() == 'Not Specified':
                QMessageBox.critical(self.dlg, "Error", "No plot variable is selected")
                return

            dates = []
            for i in range(0, data1.shape[0]):  # making date number
                dates.append(
                    dt.datetime.datetime(int(data1[i, 0]), 1, 1) + datetime.timedelta(days=data1[i, 1] - 1,
                                                                                        hours=data1[i, 2],
                                                                                        minutes=data1[i, 3]))

            # datenum_yy = np.zeros(data1.shape[0])
            # for i in range(0, data1.shape[0]):  # making date number
            #     datenum_yy[i] = dt.date2num(dt.datetime.datetime(int(data1[i, 0]), 1, 1))
            #
            # dectime = datenum_yy + data1[:, 4] - 1 #TODO: remove -1 when SUEWS output is changed
            # dates = dt.num2date(dectime)

            if not self.dlg.checkboxPOIAnother.isChecked():
                # One variable
                self.id = self.dlg.comboBox_POIVariable.currentIndex() - 1

                if self.dlg.comboBox_POIVariable.currentText() == 'Not Specified':
                    QMessageBox.critical(self.dlg, "Error", "No plotting variable is selected")
                    return

                plt.figure(1, figsize=(15, 7), facecolor='white')
                plt.title(self.dlg.comboBox_POIVariable.currentText())
                ax1 = plt.subplot(1, 1, 1)
                ax1.plot(dates, data1[:, self.id], 'r', label='$' + self.dlg.comboBox_POIVariable.currentText() + '$')
                self.get_unit()
                ax1.set_ylabel(self.unit, fontsize=14)
                ax1.set_xlabel('Time', fontsize=14)
                # plt.setp(plt.gca().xaxis.get_majorticklabels(), 'rotation', 45)
                ax1.grid(True)
            else:
                # Two variables
                id1 = self.dlg.comboBox_POIVariable.currentIndex() - 1
                self.id = id1
                self.get_unit()
                varunit1 = self.unit
                id2 = self.dlg.comboBox_POIVariable_2.currentIndex() - 1
                self.id = id2
                self.get_unit()
                varunit2 = self.unit
                if self.dlg.comboBox_POIVariable_2.currentText() == 'Not Specified' or self.dlg.comboBox_POIVariable.currentText() == 'Not Specified':
                    QMessageBox.critical(self.dlg, "Error", "No plotting variable is selected")
                    return
                # self.varpoi1 = self.dlg.comboBox_POIField.currentText()
                self.varpoi2 = self.dlg.comboBox_POIField_2.currentText()
                # data2whole = np.loadtxt(
                #     self.fileoutputpath + '/' + self.fileCode + self.varpoi2 + '_' + str(self.YYYY) + '_' + str(
                #         self.resout) + '.txt', skiprows=1)
                data2whole = np.genfromtxt(
                    self.fileoutputpath + '/' + self.fileCode + self.varpoi2 + '_' + str(self.YYYY) + '_SUEWS_' + str(
                        self.resout) + '.txt', skip_header=1, missing_values='**********', filling_values=-9999)
                data2 = data2whole[start:ending, :]

                if self.dlg.checkboxScatterbox.isChecked():
                    plt.figure(1, figsize=(11, 11), facecolor='white')
                    plt.title(
                        self.dlg.comboBox_POIVariable.currentText() + '(' + self.varpoi1 + ') vs ' + self.dlg.comboBox_POIVariable_2.currentText() + '(' + self.varpoi2 + ')')
                    ax1 = plt.subplot(1, 1, 1)
                    ax1.plot(data1[:, id1], data2[:, id2], "k.")
                    ax1.set_ylabel(self.dlg.comboBox_POIVariable.currentText() + ' (' + varunit1 + ')', fontsize=14)
                    ax1.set_xlabel(self.dlg.comboBox_POIVariable_2.currentText() + ' (' + varunit2 + ')', fontsize=14)
                else:
                    plt.figure(1, figsize=(15, 7), facecolor='white')
                    plt.title(
                        self.dlg.comboBox_POIVariable.currentText() + '(' + self.varpoi1 + ') and ' + self.dlg.comboBox_POIVariable_2.currentText() + '(' + self.varpoi2 + ')')
                    ax1 = plt.subplot(1, 1, 1)
                    if not varunit1 == varunit2:
                        ax2 = ax1.twinx()
                        ax1.plot(dates, data1[:, id1], 'r',
                                 label='$' + self.dlg.comboBox_POIVariable.currentText() + ' (' + self.varpoi1 + ')$')
                        ax1.legend(loc=1)
                        ax2.plot(dates, data2[:, id2], 'b',
                                 label='$' + self.dlg.comboBox_POIVariable_2.currentText() + ' (' + self.varpoi2 + ')$')
                        ax2.legend(loc=2)
                        ax1.set_ylabel(varunit1, color='r', fontsize=14)
                        ax2.set_ylabel(varunit2, color='b', fontsize=14)
                    else:
                        ax1.plot(dates, data1[:, id1], 'r',
                                 label='$' + self.dlg.comboBox_POIVariable.currentText() + ' (' + self.varpoi1 + ')$')
                        ax1.plot(dates, data2[:, id2], 'b',
                                 label='$' + self.dlg.comboBox_POIVariable_2.currentText() + ' (' + self.varpoi2 + ')$')
                        ax1.legend(loc=2)
                        ax1.set_ylabel(varunit1, fontsize=14)

                    # plt.setp(plt.gca().xaxis.get_majorticklabels(), 'rotation', 45)
                    ax1.grid(True)
                    ax1.set_xlabel('Time', fontsize=14)

            plt.show()
        else:
            su = suewsdataprocessing.SuewsDataProcessing()
            pl = suewsplotting.SuewsPlotting()
            TimeCol_plot = np.array([1, 2, 3, 4]) - 1
            SumCol_plot = np.array([14]) - 1
            LastCol_plot = np.array([16]) - 1
            timeaggregation = int(self.resout)

            met_new = su.tofivemin_v1(self.met_data)
            suews_plottimeold = su.from5mintoanytime(met_new, SumCol_plot, LastCol_plot, TimeCol_plot, timeaggregation)
            dataplotbasic = np.genfromtxt(self.fileoutputpath + '/' + self.fileCode + self.varpoi1 + '_' + str(self.YYYY) + '_SUEWS_' +
                          str(self.resout) + '.txt', skip_header=1, missing_values='**********', filling_values=-9999)
            # dataplotbasic = np.loadtxt(self.fileoutputpath + '/' + self.fileCode + self.gridcodemet + '_' + str(self.YYYY) + '_' + str(self.resout) + '.txt', skiprows=1)
            pl.plotbasic(dataplotbasic, suews_plottimeold)
            plt.show()

    def help(self):
        url = 'http://umep-docs.readthedocs.io/en/latest/post_processor/Urban%20Energy%20Balance%20' \
              'SUEWS%20Analyser.html'
        webbrowser.open_new_tab(url)