AreaDivider QGIS Plugin Documentation!

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save_attributes module

class save_attributes.SaveAttributes(iface)

Bases: object

add_action(icon_path, text, callback, enabled_flag=True, add_to_menu=True, add_to_toolbar=True, status_tip=None, whats_this=None, parent=None)

Parameters

• icon_path (str) – Path to the icon for this action. Can be a resource path (e.g. ‘:/plugins/foo/bar.png’) or a normal file system path.

• text (str) – Text that should be shown in menu items for this action.

• callback (function) – Function to be called when the action is triggered.

• enabled_flag (bool) – A flag indicating if the action should be enabled by default. Defaults to True.

• add_to_menu (bool) – Flag indicating whether the action should also be added to the menu. Defaults to True.

• add_to_toolbar (bool) – Flag indicating whether the action should also be added to the toolbar. Defaults to True.

• status_tip (str) – Optional text to show in a popup when mouse pointer hovers over the action.

• parent (QWidget) – Parent widget for the new action. Defaults None.

• 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.

Return type

QAction

apply_graduated_symbology(area_size)

Creates Symbology for each value in range of values. Values are # of patients per zip code. Hard codes min value, max value, symbol (color), and label for each range of values. Then QgsSymbolRenderer takes field from attribute table and item from myRangeList and applies them to join_layer. Color values are hex codes, in a graduated fashion from light pink to black depending on intensity

createShp(input_line, costs, out_shp, sr)

error_msj(uyari)

initGui()

Create the menu entries and toolbar icons inside the QGIS GUI.

input_shp_file()

loadLayerList()

load_comboBox()

Load the fields into combobox when layers are changed

run()

Run method that performs all the real work

runAlgorithm()

select_output_file()

tr(message)

Get the translation for a string using Qt translation API.

We implement this ourselves since we do not inherit QObject.

Parameters

message (str, QString) – String for translation.

Returns

Translated version of message.

Return type

QString

unload()

Removes the plugin menu item and icon from QGIS GUI.

QGIS Plugin Area Divider

Authors:

Atahan Çelebi

Eda Karabaş

Plugin’s User Interface

-Language Support (Eng-Tr)

We can see the lower and upper value according to user choice. After the selection of the area unit this part split the higher areas and the lower areas

Apply The Graduated Function

You can also look at the Area_calc’s attribues

Type of geometry is a point or line

If we select a line shapefile it draws the minimum flight distance between the two points and the their real distance.

Find the points that have minimum distance and the maximum distance

QGIS Plugin Area Divider

This unit test work for the layer if it has been added or not and check its suitability

Test Layer Transaction -Qgis Project instance/Add map layer whether layer exist -try/except raise error if not exist could not pass unit test

Test Load Layer -Read the layer -If None could not pass unit test

Here is the all code that we implement:

class SaveAttributesTest(unittest.TestCase):
    """Test dialog works."""
    @classmethod
    def setUpClass(cls):
            cls.iface = get_iface()
    def setUp(self):
            """Runs before each test."""
            QgsProject.instance().clear()
            self.dialog = SaveAttributesDialog(None)
            self.attributes=SaveAttributes(get_iface())
            self.attributes.dlg=self.dialog
    def test_Layer(self):
            try:
                    vlayer = QgsVectorLayer("TEST_LINE","line","memory")
                    vlayer = QgsVectorLayer("TEST_LINE","point","memory")
                    vlayer = QgsVectorLayer("TEST_LINE","polygon","memory")

            except:
                    self.assertTrue(True==False)

    def test_Layer_Transaction(self):
            try:
                    vlayer = QgsVectorLayer("TEST_LINE","line","memory")
                    QgsProject.instance().addMapLayer(vlayer)

            except:
                    self.assertTrue(True==False)

    def test_load_layer(self):
            path=os.path.dirname(os.path.realpath(__file__)) + "../../save_attributes/unittests/"
            ds = ogr.Open(path+"c_beytepe.shp",0)
            self.assertTrue(ds==None)

    def tearDown(self):
            """Runs after each test."""
            self.dialog = None


    if __name__ == "__main__":
    suite = unittest.makeSuite(SaveAttributesDialogTest)

    logging.basicConfig(stream=sys.stderr, level=logging.DEBUG)
    runner = unittest.TextTestRunner(verbosity=2)
    runner.run(suite)

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