1

I am using Qgis version 2.18.20 I am making a plugin for split the shp files from a vector layer.

My Code:

# -*- coding: utf-8 -*-
"""
/***************************************************************************
 SplitLayer
                                 A QGIS plugin
 this will split the layer ad saves in the desired folder
                              -------------------
        begin                : 2018-06-25
        git sha              : $Format:%H$
        copyright            : (C) 2018 by Goku_Force
        email                : 160303105162@paruluniversity.ac.in
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtCore import QSettings, QTranslator, qVersion, QCoreApplication
from PyQt4.QtGui import QAction, QIcon ,QFileDialog,QWidget
# Initialize Qt resources from file resources.py
import resources
from qgis.core import *
from PyQt4.QtGui import *
from qgis.gui import *
from qgis.utils import iface
from qgis.core import QgsVectorLayer, QgsPoint
# Import the code for the dialog
from split_layer_dialog import SplitLayerDialog
from qgis.gui import QgsMapLayerComboBox
import os.path


class SplitLayer:
    """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: QgisInterface
        """

        # 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',
            'SplitLayer_{}.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 = SplitLayerDialog()


        # Declare instance attributes
        self.actions = []
        self.menu = self.tr(u'&split layer')
        # TODO: We are going to let the user set this up in a future iteration
        self.toolbar = self.iface.addToolBar(u'SplitLayer')
        self.toolbar.setObjectName(u'SplitLayer')
        self.dlg.lineEdit.clear()
        self.dlg.pushButton.clicked.connect(self.select_output_file)


    # 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('SplitLayer', 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
        """

        # Create the dialog (after translation) and keep reference
        #self.dlg = SplitLayerDialog()

        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/SplitLayer/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'&split layer'),
                action)
            self.iface.removeToolBarIcon(action)
        # remove the toolbar
        del self.toolbar



    def select_output_file(self):
        filename = QFileDialog.getSaveFileName(self.dlg, "Select output file ","", '*.txt')
        self.dlg.lineEdit.setText(filename)



    def run(self):
        """Run method that performs all the real work"""
        """layers = self.iface.legendInterface().layers()
        layer_list = []
        for layer in layers:
                layer_list.append(layer.name())

        self.dlg.comboBox.clear()
        self.dlg.comboBox.addItems(layer_list)"""


        layers = self.iface.legendInterface().layers()
        layer_list = []
        for layer in layers:
            layer_list.append(layer.name())
        self.dlg.comboBox.clear()
        self.dlg.comboBox.addItems(layer_list)
        ##################################################################

        myfilepath=iface.activeLayer().dataProvider().dataSourceUri()
        path_slicing=int(myfilepath.find("."))
        f_path=myfilepath[:path_slicing]
        layer =QgsVectorLayer(f_path+".shp", "Goku_Force", "ogr")
        features = layer.getFeatures()
        f = features.next()
        Id=[str(c.name()) for c in f.fields().toList()]
        #for layer in Id:
        #    layer_list.append(int(Id[layer])
        self.dlg.comboBox_2.clear()
        self.dlg.comboBox_2.addItems(Id)



        def field_select():
            self.dlg.comboBox_2.clear()
            selectedLayerIndex = self.dlg.comboBox.currentIndex()
            selectedLayer = layers[selectedLayerIndex]
            fields = [field.name() for field in selectedLayer.pendingFields()]
            self.dlg.comboBox_2.addItems(fields)

        self.dlg.comboBox.currentIndexChanged.connect(field_select)

        def field_select_2():
            btt=self.dlg.comboBox_2.currentText()

        self.dlg.comboBox_2.currentIndexChanged.connect(field_select_2)




        # show the dialog
        self.dlg.show()
        # Run the dialog event loop
        result = self.dlg.exec_()

        # See if OK was pressed
        if result:
            # Do something useful here - delete the line containing pass and
            # substitute with your code.
            filename = self.dlg.lineEdit.text()
            output_file = open(filename, 'w')

            selectedLayerIndex = self.dlg.comboBox.currentIndex()
            selectedLayer = layers[selectedLayerIndex]
            fields = selectedLayer.pendingFields()
            fieldnames = [field.name() for field in fields]

            for f in selectedLayer.getFeatures():
                line = ','.join(unicode(f[x]) for x in fieldnames) + '\n'
                unicode_line = line.encode('utf-8')
                output_file.write(unicode_line)
            output_file.close()

I want a way to store the current combo box-2 value in a variable that(i.e unique id or field attributes ) i want to use in processing.runalg('qgis:splitvectorlayer', input, field, output)

I have the value of input And i also do not know how to make a select folder i have made a select file for attribute features.

I hope this much information is enough .. My Plugin design Want the Folder Select option To store the Shp file after the spliting algo

0

First add these two lines in the init function

self.dlg.lineEdit_2.clear() self.dlg.pushButton.clicked.connect(self.select_output_file) self.dlg.pushButton_2.clicked.connect(self.select_output_file_1)

This is the Syntax for creating a folder dialog box from which the user can select

def select_output_file(self): self.dir = QFileDialog.getExistingDirectory(self.dlg, "Open Directory","",QFileDialog.ShowDirsOnly or QFileDialog.DontResolveSymlinks) self.dlg.lineEdit.setText(self.dir)

These is the code for selecting the Combox_2 with the index. splitlayer_2=self.dlg.comboBox_2.currentIndex() splitlayer_1=SplitLayer.Id[splitlayer_2] SplitLayer1=splitlayer_1

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.