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gui.py
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gui.py
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# -*- coding: UTF-8 -*-
from EpanetAlgorithmProvider import EpanetAlgorithmProvider
from processing.core.Processing import Processing
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
from pylab import *
import os
class Gui:
def __init__(self, iface):
self.iface = iface
self.actions = []
def initGui(self):
self.actions.append( QAction(
QIcon(os.path.dirname(__file__) + "/timeplot.svg"),
u"timeplot", self.iface.mainWindow()) )
self.actions[-1].setWhatsThis("timeplot")
self.actions[-1].triggered.connect(self.timeplot)
for a in self.actions:
self.iface.addToolBarIcon(a)
self.epanetAlgoProvider = EpanetAlgorithmProvider()
Processing.addProvider(self.epanetAlgoProvider, True)
QgsMapLayerRegistry.instance().layersAdded.connect( self.layerAdded )
def unload(self):
Processing.removeProvider(self.epanetAlgoProvider)
# Remove the plugin menu item and icon
for a in self.actions:
self.iface.removeToolBarIcon(a)
def timeplot(self):
layer = self.iface.activeLayer()
if not layer:
return
if layer.name().lower() == 'reservoirs' or layer.name().lower() == 'tanks':
res = QgsMapLayerRegistry.instance().mapLayersByName('Node output table')
if res:
assert(len(res) == 1)
nbfeat = len(layer.selectedFeatures())
fig, p = None,[]
if nbfeat >= 1 : fig,p = subplots(1,nbfeat)
if nbfeat == 1 : p = [p]
for i,s in enumerate(layer.selectedFeatures()):
x,y = [],[]
for f in res[0].getFeatures(QgsFeatureRequest(QgsExpression("Node = '"+s[0]+"'"))):
#print s['ID Noeud'],' ',f['Time'],' ',f['Head']
t = f['Time'].split(' ')[1].split(':')
x.append(int(t[0])*60+int(t[1]))
y.append(f['Pressure'])
if s[3] and s[4]: # overflow and empty columns may not be there
p[i].axhspan(float(s[3]), float(s[4]), color='lightgreen')
p[i].text(0, float(s[4]), ' overflow')
p[i].text(0, float(s[3]), ' empty')
p[i].set_axis_bgcolor('r')
p[i].plot(x,y)
p[i].set_title(layer.name()+' '+s[0])
p[i].set_xlabel('Time [min]')
p[i].set_ylabel('Level [m]')
if fig : show()
if layer.name().lower() == 'pumps':
res = QgsMapLayerRegistry.instance().mapLayersByName('Link output table')
if res:
assert(len(res) == 1)
nbfeat = len(layer.selectedFeatures())
fig, p = None,[]
if nbfeat >= 1 : fig,p = subplots(1,nbfeat)
if nbfeat == 1 : p = [p]
for i,s in enumerate(layer.selectedFeatures()):
x,y = [],[]
for f in res[0].getFeatures(QgsFeatureRequest(QgsExpression("Link = '"+s[0]+"'"))):
#print s['ID Noeud'],' ',f['Time'],' ',f['Head']
t = f['Time'].split(' ')[1].split(':')
x.append(int(t[0])*60+int(t[1]))
y.append(f['Flow'])
p[i].plot(x,y)
p[i].set_title(layer.name()+' '+s[0])
p[i].set_xlabel('Time [min]')
p[i].set_ylabel('Flow [m3/h]')
if fig : show()
if layer.name().lower() == 'pipes':
res = QgsMapLayerRegistry.instance().mapLayersByName('Link output table')
if res:
assert(len(res) == 1)
nbfeat = len(layer.selectedFeatures())
fig, p = None,[]
if nbfeat >= 1 : fig,p = subplots(1,nbfeat)
if nbfeat == 1 : p = [p]
for i,s in enumerate(layer.selectedFeatures()):
x,y = [],[]
for f in res[0].getFeatures(QgsFeatureRequest(QgsExpression("Link = '"+s[0]+"'"))):
#print s['ID Noeud'],' ',f['Time'],' ',f['Head']
t = f['Time'].split(' ')[1].split(':')
x.append(int(t[0])*60+int(t[1]))
y.append(f['Velocity'])
p[i].plot(x,y)
p[i].set_title(layer.name()+' '+s[0])
p[i].set_xlabel('Time [min]')
p[i].set_ylabel('Velocity [m/s]')
if fig : show()
if layer.name().lower() == 'junctions':
res = QgsMapLayerRegistry.instance().mapLayersByName('Node output table')
if res:
assert(len(res) == 1)
nbfeat = len(layer.selectedFeatures())
fig, p = None,[]
if nbfeat >= 1 : fig,p = subplots(1,nbfeat)
if nbfeat == 1 : p = [p]
for i,s in enumerate(layer.selectedFeatures()):
x,y = [],[]
for f in res[0].getFeatures(QgsFeatureRequest(QgsExpression("Node = '"+s[0]+"'"))):
#print s['ID Noeud'],' ',f['Time'],' ',f['Head']
t = f['Time'].split(' ')[1].split(':')
x.append(int(t[0])*60+int(t[1]))
y.append(f['Pressure'])
p[i].plot(x,y)
p[i].set_title(layer.name()+' '+s[0])
p[i].set_xlabel('Time [min]')
p[i].set_ylabel('Pressure [m]')
if fig : show()
def layerAdded(self, layers):
# get a map from layer names
epanet_layers = {}
for name,l in QgsMapLayerRegistry.instance().mapLayers().iteritems():
short_name = l.name().lower()
if short_name in ['tanks','sources','reservoirs','pumps','pipes','junctions','valves','emitters']:
epanet_layers[short_name] = l
for l in layers :
if l.type() != QgsMapLayer.VectorLayer : continue
result_type = None
fields = [f.name() for f in l.pendingFields()]
if 'Link' in fields and 'AvgVelocity' in fields:
result_type = 'Link time agregates'
if 'Node' in fields and 'MaxPressure' in fields:
result_type = 'Node time agregates'
if result_type == 'Node time agregates':
for name in ['junctions','emitters','tanks','sources','reservoirs']:
if name in epanet_layers: # create join on first field
join_info = QgsVectorJoinInfo()
join_info.targetFieldName = epanet_layers[name].pendingFields()[0].name()
join_info.targetFieldIndex = 0
join_info.joinLayerId = l.id()
join_info.joinFieldName = 'Node'
join_info.joinFieldIndex = 0
join_info.memoryCache = False
#join_info.cachedAttributes =
epanet_layers[name].addJoin( join_info )
if result_type == 'Link time agregates':
for name in ['pipes','valves','pumps']:
if name in epanet_layers: # create join on first field
join_info = QgsVectorJoinInfo()
join_info.targetFieldName = epanet_layers[name].pendingFields()[0].name()
join_info.targetFieldIndex = 0
join_info.joinLayerId = l.id()
join_info.joinFieldName = 'Link'
join_info.joinFieldIndex = 0
join_info.memoryCache = False
#join_info.cachedAttributes =
epanet_layers[name].addJoin( join_info )