class ElectricalConductivityDialogTest(unittest.TestCase):
"""Test dialog works."""
def setUp(self):
"""Runs before each test."""
self.dialog = ElectricalConductivityDialog(None)
def tearDown(self):
"""Runs after each test."""
self.dialog = None
def test_dialog_ok(self):
"""Test we can click OK."""
button = self.dialog.button_box.button(QDialogButtonBox.Ok)
button.click()
result = self.dialog.result()
self.assertEqual(result, QDialog.Accepted)
def test_dialog_cancel(self):
"""Test we can click cancel."""
button = self.dialog.button_box.button(QDialogButtonBox.Cancel)
button.click()
result = self.dialog.result()
self.assertEqual(result, QDialog.Rejected)
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',
'ElectricalConductivity_{}.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 = ElectricalConductivityDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&Electrical Conductivity')
# TODO: We are going to let the user set this up in a future iteration
self.toolbar = self.iface.addToolBar(u'ElectricalConductivity')
self.toolbar.setObjectName(u'ElectricalConductivity')
self.dlg.Path.clear()
self.dlg.browse.clicked.connect(self.select_input_file)
def setUp(self):
"""Runs before each test."""
self.dialog = ElectricalConductivityDialog(None)
class ElectricalConductivity:
"""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',
'ElectricalConductivity_{}.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 = ElectricalConductivityDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&Electrical Conductivity')
# TODO: We are going to let the user set this up in a future iteration
self.toolbar = self.iface.addToolBar(u'ElectricalConductivity')
self.toolbar.setObjectName(u'ElectricalConductivity')
self.dlg.Path.clear()
self.dlg.browse.clicked.connect(self.select_input_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('ElectricalConductivity', 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:
self.toolbar.addAction(action)
if add_to_menu:
self.iface.addPluginToRasterMenu(
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/ElectricalConductivity/icon.png'
self.add_action(
icon_path,
text=self.tr(u'electrical conductivity'),
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.removePluginRasterMenu(
self.tr(u'&Electrical Conductivity'),
action)
self.iface.removeToolBarIcon(action)
# remove the toolbar
del self.toolbar
def select_input_file(self):
filename = QFileDialog.getOpenFileName(self.dlg, "Select input file ","", '*.tif')
self.dlg.Path.setText(filename)
def run(self):
"""Run method that performs all the real work"""
# 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.
"""read path from user input"""
inputPath = self.dlg.Path.text()
"""set path for output file and concat file name to path"""
outputPath = 'C:\Users\Administrator\Desktop\\'
outputName = self.dlg.fileName.text()
outputFile = outputPath + outputName
"""read image and calculate electrical conductivity and electrical Resistivity and set RGB for each pixel which R represent adj Pred Moist,
G represents electrical conductivity and B represents electrical resistivity"""
"""for tiff file output"""
if(self.dlg.tiff.isChecked()):
oldImage = Image.open(inputPath)
rgb_image = oldImage.convert('RGB')
newImage = Image.new(oldImage.mode,oldImage.size,'white')
for x in xrange(newImage.size[0]):
for y in xrange(newImage.size[1]):
R, G, B = rgb_image.getpixel((x, y))
sand = (R * 0.4 / 255.0)
clay = (G * 0.5 / 255.0)
om = (B * 5 / 255.0)
predMoist = -0.251 * sand + 0.195 * clay + 0.011 * om + 0.006 * sand * om - 0.027 * clay * om + 0.452 * sand * clay + 0.299
adjPredMoist = predMoist + (1.283 * predMoist * predMoist - 0.374 * predMoist - 0.015)
electricalConductivity = 0.000471052 * math.pow(100 * adjPredMoist, 3.458)
electricalResistivity = 1000.0 / electricalConductivity
newImage.putpixel((x,y),(int(adjPredMoist), int(electricalConductivity), int(electricalResistivity)))
newImage.save(outputFile + '.tif')
"""create raster layer and calculate electrical conductivity and write in ASCII XYZ file which X and Y represent centroid coordinate of each pixel
and Z represents electrical conductivity"""
"""for ASCII XYZ file output"""
if(self.dlg.asciiXYZ.isChecked()):
raster = QgsRasterLayer(inputPath)
w = raster.width()
h = raster.height()
p = raster.dataProvider()
b = p.block(0, p.extent(), w, h)
f = file(outputFile + '.xyz', 'w')
f.write('X,Y,Z(Electrical Conductivity)\n')
pix_x = raster.rasterUnitsPerPixelX()
pix_y = raster.rasterUnitsPerPixelY()
half_x = pix_x / 2
half_y = pix_y / 2
extent = p.extent()
count = 0
y = extent.yMinimum()
while y < extent.yMaximum():
y += pix_y
count += 1
x = extent.xMinimum()
while x < extent.xMaximum():
x += pix_x
pos = QgsPoint(x - half_x, y - half_y)
R = p.identify(pos, QgsRaster.IdentifyFormatValue).results()[1]
G = p.identify(pos, QgsRaster.IdentifyFormatValue).results()[2]
B = p.identify(pos, QgsRaster.IdentifyFormatValue).results()[3]
sand = (R * 0.4 / 255.0)
clay = (G * 0.5 / 255.0)
om = (B * 5 / 255.0)
predMoist = -0.251 * sand + 0.195 * clay + 0.011 * om + 0.006 * sand * om - 0.027 * clay * om + 0.452 * sand * clay + 0.299
adjPredMoist = predMoist + (1.283 * predMoist * predMoist - 0.374 * predMoist - 0.015)
electricalConductivity = 0.000471052 * math.pow(100 * adjPredMoist, 3.458)
f.write('%s, %s, %s\n' % (pos.x(),pos.y(), electricalConductivity))
f.close()
