mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-20 00:06:36 -04:00
154 lines
6.1 KiB
Python
154 lines
6.1 KiB
Python
"""
|
|
***************************************************************************
|
|
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'
|
|
|
|
import warnings
|
|
|
|
from qgis.core import (QgsProcessingException,
|
|
QgsProcessingParameterFeatureSource,
|
|
QgsProcessingParameterField,
|
|
QgsProcessingParameterEnum,
|
|
QgsProcessingParameterFileDestination,
|
|
QgsFeatureRequest,
|
|
QgsProcessingParameterString)
|
|
from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
|
|
from processing.tools import vector
|
|
|
|
from qgis.PyQt.QtCore import QCoreApplication
|
|
|
|
|
|
class BoxPlot(QgisAlgorithm):
|
|
INPUT = 'INPUT'
|
|
OUTPUT = 'OUTPUT'
|
|
NAME_FIELD = 'NAME_FIELD'
|
|
VALUE_FIELD = 'VALUE_FIELD'
|
|
MSD = 'MSD'
|
|
TITLE = 'TITLE'
|
|
XAXIS_TITLE = "XAXIS_TITLE"
|
|
YAXIS_TITLE = "YAXIS_TITLE"
|
|
|
|
def group(self):
|
|
return self.tr('Plots')
|
|
|
|
def groupId(self):
|
|
return 'plots'
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
|
|
def initAlgorithm(self, config=None):
|
|
self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT,
|
|
self.tr('Input layer')))
|
|
self.addParameter(QgsProcessingParameterField(self.NAME_FIELD,
|
|
self.tr('Category name field'),
|
|
parentLayerParameterName=self.INPUT,
|
|
type=QgsProcessingParameterField.DataType.Any))
|
|
self.addParameter(QgsProcessingParameterField(self.VALUE_FIELD,
|
|
self.tr('Value field'),
|
|
parentLayerParameterName=self.INPUT,
|
|
type=QgsProcessingParameterField.DataType.Numeric))
|
|
msd = [self.tr('Show Mean'),
|
|
self.tr('Show Standard Deviation'),
|
|
self.tr('Don\'t show Mean and Standard Deviation')
|
|
]
|
|
self.addParameter(QgsProcessingParameterEnum(
|
|
self.MSD,
|
|
self.tr('Additional Statistic Lines'),
|
|
options=msd, defaultValue=0))
|
|
|
|
self.addParameter(QgsProcessingParameterString(
|
|
self.TITLE,
|
|
self.tr('Title'),
|
|
optional=True))
|
|
|
|
self.addParameter(QgsProcessingParameterString(
|
|
self.XAXIS_TITLE,
|
|
self.tr('Xaxis Title'),
|
|
optional=True))
|
|
|
|
self.addParameter(QgsProcessingParameterString(
|
|
self.YAXIS_TITLE,
|
|
self.tr('Yaxis Title'),
|
|
optional=True))
|
|
|
|
self.addParameter(QgsProcessingParameterFileDestination(self.OUTPUT, self.tr('Box plot'), self.tr('HTML files (*.html)')))
|
|
|
|
def name(self):
|
|
return 'boxplot'
|
|
|
|
def displayName(self):
|
|
return self.tr('Box plot')
|
|
|
|
def processAlgorithm(self, parameters, context, feedback):
|
|
try:
|
|
# importing plotly throws Python warnings from within the library - filter these out
|
|
with warnings.catch_warnings():
|
|
warnings.filterwarnings("ignore", category=ResourceWarning)
|
|
warnings.filterwarnings("ignore", category=ImportWarning)
|
|
import plotly as plt
|
|
import plotly.graph_objs as go
|
|
except ImportError:
|
|
raise QgsProcessingException(QCoreApplication.translate('BoxPlot', 'This algorithm requires the Python “plotly” library. Please install this library and try again.'))
|
|
|
|
source = self.parameterAsSource(parameters, self.INPUT, context)
|
|
if source is None:
|
|
raise QgsProcessingException(self.invalidSourceError(parameters, self.INPUT))
|
|
|
|
namefieldname = self.parameterAsString(parameters, self.NAME_FIELD, context)
|
|
valuefieldname = self.parameterAsString(parameters, self.VALUE_FIELD, context)
|
|
|
|
title = self.parameterAsString(parameters, self.TITLE, context)
|
|
xaxis_title = self.parameterAsString(parameters, self.XAXIS_TITLE, context)
|
|
yaxis_title = self.parameterAsString(parameters, self.YAXIS_TITLE, context)
|
|
|
|
if title.strip() == "": title = None
|
|
if xaxis_title.strip() == "": xaxis_title = None
|
|
if yaxis_title.strip() == "": xaxis_title = None
|
|
|
|
output = self.parameterAsFileOutput(parameters, self.OUTPUT, context)
|
|
|
|
values = vector.values(source, valuefieldname)
|
|
|
|
x_index = source.fields().lookupField(namefieldname)
|
|
x_var = vector.convert_nulls([i[namefieldname] for i in source.getFeatures(QgsFeatureRequest().setFlags(QgsFeatureRequest.Flag.NoGeometry).setSubsetOfAttributes([x_index]))], '<NULL>')
|
|
|
|
msdIndex = self.parameterAsEnum(parameters, self.MSD, context)
|
|
msd = True
|
|
|
|
if msdIndex == 1:
|
|
msd = 'sd'
|
|
elif msdIndex == 2:
|
|
msd = False
|
|
|
|
data = [go.Box(
|
|
x=x_var,
|
|
y=values[valuefieldname],
|
|
boxmean=msd)]
|
|
|
|
fig = go.Figure(
|
|
data=data,
|
|
layout_title_text=title,
|
|
layout_xaxis_title=xaxis_title,
|
|
layout_yaxis_title=yaxis_title)
|
|
|
|
fig.write_html(output)
|
|
|
|
return {self.OUTPUT: output}
|