def open(self):
f = self._reader.sampling_frequency
r = self._reader.sample_id_range
x_lim = [x / f for x in r]
self._span = span.Span(x_lim, 1 / f, 100)
self._x_range, self._samples_per, self._x = self._span.conform_discrete(
x_lim)
self._cache = None # invalidate
def open(self):
fs = self.sampling_frequency
sample_id_last = self._parent().sample_id_last
x_lim = [0, sample_id_last / fs]
self._span = span.Span(x_lim, 1.0 / fs, 100)
self._x_range, self._samples_per, self._x = self._span.conform_discrete(
x_lim)
self._cache = None # invalidate
def open(self):
f = self._reader.sampling_frequency
if f <= 0:
self._log.warning('Invalid sampling_frequency %r, assume 1 Hz', f)
f = 1.0
r = self._reader.sample_id_range
x_lim = [x / f for x in r]
self._span = span.Span(x_lim, 1 / f, 100)
self._x_range, self._samples_per, self._x = self._span.conform_discrete(x_lim)
self._cache = None # invalidate
def _stream_buffer_assign(self, stream_buffer):
if self._stream_buffer == stream_buffer:
return
self._stream_buffer = stream_buffer
self._x_range = list(self._stream_buffer.limits_time) # the initial default range
length = len(self)
if length <= 0:
length = 100
# todo : investigate - may want inclusive max time (not exclusive) -- off by 1 error?
self._span = span.Span(limits=self._stream_buffer.limits_time,
quant=1.0 / self.sampling_frequency,
length=length)
def __init__(self, device: Device):
self._device = device # which must be opened
self.x = None
self.data = None # NxMx4 np.float32 [length][current, voltage, power][mean, var, min, max]
x_max = len(self._device.stream_buffer) / self.sampling_frequency
self.x_range = [x_max - 1.0, x_max] # the current range
self.samples_per = 1
self.data_idx = 0
self.span = span.Span(limits=[0.0, x_max],
quant=1.0 / self.sampling_frequency,
length=100)
self.changed = True
def open(self):
self.view = self
self.reader = DataReader().open(self._filename)
f = self.reader.sampling_frequency
r = self.reader.sample_id_range
x_lim = [x / f for x in r]
self.span = span.Span(x_lim, 1 / f, 100)
self.x_range, self.samples_per, self.x = self.span.conform_discrete(
x_lim)
self._cache = None # invalidate
log.info('RecordingViewerDevice.open: %s => %s, %s', r, self.x_range,
self.samples_per)