mirror of
https://github.com/qgis/QGIS.git
synced 2025-04-29 00:03:59 -04:00
f84d703234
Algorithms and other processing code should use this method (instead of dataobjects.getLayerFromString) to retrieve layers from a string, as it considers the processing context and allows resolving strings to temporarily stored layers. This permits processing models to function correctly when intermediate results are stored as memory layers. Subsequent model algorithms can then access these temporary layers as inputs. All temporary layers will be removed when the context object is destroyed after the model algorithm is run.
110 lines
3.8 KiB
Python
110 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
BarPlot.py
|
|
---------------------
|
|
Date : March 2015
|
|
Copyright : (C) 2017 by Matteo Ghetta
|
|
Email : matteo dot ghetta at gmail dot com
|
|
***************************************************************************
|
|
* *
|
|
* 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. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__author__ = 'Matteo Ghetta'
|
|
__date__ = 'March 2017'
|
|
__copyright__ = '(C) 2017, Matteo Ghetta'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
import plotly as plt
|
|
import plotly.graph_objs as go
|
|
|
|
from qgis.core import (QgsApplication)
|
|
from processing.core.parameters import ParameterTable
|
|
from processing.core.parameters import ParameterTableField
|
|
from processing.core.parameters import ParameterSelection
|
|
from processing.core.GeoAlgorithm import GeoAlgorithm
|
|
from processing.core.outputs import OutputHTML
|
|
from processing.tools import vector
|
|
from processing.tools import dataobjects
|
|
|
|
|
|
class BoxPlot(GeoAlgorithm):
|
|
|
|
INPUT = 'INPUT'
|
|
OUTPUT = 'OUTPUT'
|
|
NAME_FIELD = 'NAME_FIELD'
|
|
VALUE_FIELD = 'VALUE_FIELD'
|
|
MSD = 'MSD'
|
|
|
|
def icon(self):
|
|
return QgsApplication.getThemeIcon("/providerQgis.svg")
|
|
|
|
def svgIconPath(self):
|
|
return QgsApplication.iconPath("providerQgis.svg")
|
|
|
|
def group(self):
|
|
return self.tr('Graphics')
|
|
|
|
def name(self):
|
|
return 'boxplot'
|
|
|
|
def displayName(self):
|
|
return self.tr('Box plot')
|
|
|
|
def defineCharacteristics(self):
|
|
self.addParameter(ParameterTable(self.INPUT, self.tr('Input table')))
|
|
self.addParameter(ParameterTableField(self.NAME_FIELD,
|
|
self.tr('Category name field'),
|
|
self.INPUT,
|
|
ParameterTableField.DATA_TYPE_ANY))
|
|
self.addParameter(ParameterTableField(self.VALUE_FIELD,
|
|
self.tr('Value field'),
|
|
self.INPUT,
|
|
ParameterTableField.DATA_TYPE_NUMBER))
|
|
msd = [self.tr('Show Mean'),
|
|
self.tr('Show Standard Deviation'),
|
|
self.tr('Don\'t show Mean and Standard Deviation')
|
|
]
|
|
self.addParameter(ParameterSelection(
|
|
self.MSD,
|
|
self.tr('Additional Statistic Lines'),
|
|
msd, default=0))
|
|
|
|
self.addOutput(OutputHTML(self.OUTPUT, self.tr('Box plot')))
|
|
|
|
def processAlgorithm(self, context, feedback):
|
|
layer = dataobjects.QgsProcessingUtils.mapLayerFromString(self.getParameterValue(self.INPUT), context)
|
|
namefieldname = self.getParameterValue(self.NAME_FIELD)
|
|
valuefieldname = self.getParameterValue(self.VALUE_FIELD)
|
|
|
|
output = self.getOutputValue(self.OUTPUT)
|
|
|
|
values = vector.values(layer, context, valuefieldname)
|
|
|
|
x_var = [i[namefieldname] for i in layer.getFeatures()]
|
|
|
|
msdIndex = self.getParameterValue(self.MSD)
|
|
msd = True
|
|
|
|
if msdIndex == 1:
|
|
msd = 'sd'
|
|
elif msdIndex == 2:
|
|
msd = False
|
|
|
|
data = [go.Box(
|
|
x=x_var,
|
|
y=values[valuefieldname],
|
|
boxmean=msd)]
|
|
|
|
plt.offline.plot(data, filename=output, auto_open=False)
|