62 lines
1.6 KiB
Python
62 lines
1.6 KiB
Python
import pyqtgraph as pg
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from pyqtgraph.Qt import QtGui, QtCore
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from .Exporter import Exporter
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from pyqtgraph.parametertree import Parameter
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__all__ = ['CSVExporter']
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class CSVExporter(Exporter):
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Name = "CSV from plot data"
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windows = []
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def __init__(self, item):
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Exporter.__init__(self, item)
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self.params = Parameter(name='params', type='group', children=[
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{'name': 'separator', 'type': 'list', 'value': 'comma', 'values': ['comma', 'tab']},
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])
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def parameters(self):
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return self.params
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def export(self, fileName=None):
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if not isinstance(self.item, pg.PlotItem):
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raise Exception("Must have a PlotItem selected for CSV export.")
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if fileName is None:
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self.fileSaveDialog(filter=["*.csv", "*.tsv"])
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return
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fd = open(fileName, 'w')
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data = []
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header = []
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for c in self.item.curves:
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data.append(c.getData())
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header.extend(['x', 'y'])
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if self.params['separator'] == 'comma':
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sep = ','
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else:
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sep = '\t'
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fd.write(sep.join(header) + '\n')
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i = 0
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while True:
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done = True
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for d in data:
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if i < len(d[0]):
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fd.write('%g%s%g%s'%(d[0][i], sep, d[1][i], sep))
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done = False
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else:
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fd.write(' %s %s' % (sep, sep))
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fd.write('\n')
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if done:
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break
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i += 1
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fd.close()
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