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[processing] update polar plot

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This commit is contained in:
Alexander Bruy 2017-02-15 19:46:18 +02:00
parent 19289ccc4e
commit b3ab5543dd
2 changed files with 13 additions and 34 deletions
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26
python/plugins/processing/algs/qgis/PolarPlot.py
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@ -25,17 +25,15 @@ __copyright__ = '(C) 2013, Victor Olaya'
__revision__ = '$Format:%H$'
import matplotlib.pyplot as plt
import matplotlib.pylab as lab
from matplotlib.pyplot import figure
import plotly as plt
import plotly.graph_objs as go
import numpy as np
from processing.core.GeoAlgorithm import GeoAlgorithm
from processing.core.parameters import ParameterTable
from processing.core.parameters import ParameterTableField
from processing.core.outputs import OutputHTML
from processing.tools import vector
from processing.tools import dataobjects
from processing.tools import dataobjects, vector
class PolarPlot(GeoAlgorithm):
@ -66,16 +64,8 @@ class PolarPlot(GeoAlgorithm):
output = self.getOutputValue(self.OUTPUT)
values = vector.values(layer, namefieldname, valuefieldname)
plt.close()
fig = figure(figsize=(8, 8))
ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], polar=True)
N = len(values[valuefieldname])
theta = np.arange(0.0, 2 * np.pi, 2 * np.pi / N)
radii = values[valuefieldname]
width = 2 * np.pi / N
ax.bar(theta, radii, width=width, bottom=0.0)
plotFilename = output + '.png'
lab.savefig(plotFilename)
with open(output, 'w') as f:
f.write('<html><img src="' + plotFilename + '"/></html>')
values = vector.values(layer, valuefieldname)
data = [go.Area(r=values[valuefieldname],
t=np.degrees(np.arange(0.0, 2 * np.pi, 2 * np.pi / len(values[valuefieldname]))))]
plt.offline.plot(data, filename=output)

21
python/plugins/processing/algs/qgis/QGISAlgorithmProvider.py
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@ -262,31 +262,20 @@ class QGISAlgorithmProvider(AlgorithmProvider):
FixGeometry(), ExecuteSQL(), FindProjection()
]
#~ if hasMatplotlib:
#~ from .VectorLayerHistogram import VectorLayerHistogram
#~ from .RasterLayerHistogram import RasterLayerHistogram
#~ from .VectorLayerScatterplot import VectorLayerScatterplot
#~ from .MeanAndStdDevPlot import MeanAndStdDevPlot
#~ from .BarPlot import BarPlot
#~ from .PolarPlot import PolarPlot
#~ self.alglist.extend([
#~ VectorLayerHistogram(), RasterLayerHistogram(),
#~ VectorLayerScatterplot(), MeanAndStdDevPlot(), BarPlot(),
#~ PolarPlot(),
#~ ])
if hasPlotly:
from .VectorLayerHistogram import VectorLayerHistogram
from .RasterLayerHistogram import RasterLayerHistogram
from .VectorLayerScatterplot import VectorLayerScatterplot
from .MeanAndStdDevPlot import MeanAndStdDevPlot
from .BarPlot import BarPlot
#~ from .PolarPlot import PolarPlot
from .PolarPlot import PolarPlot
self.alglist.extend([VectorLayerHistogram(), RasterLayerHistogram(),
VectorLayerScatterplot(), MeanAndStdDevPlot(), BarPlot()])
VectorLayerScatterplot(), MeanAndStdDevPlot(),
BarPlot(), PolarPlot()])
self.externalAlgs = [] # to store algs added by 3rd party plugins as scripts
# to store algs added by 3rd party plugins as scripts
self.externalAlgs = []
folder = os.path.join(os.path.dirname(__file__), 'scripts')
scripts = ScriptUtils.loadFromFolder(folder)