FakeData Package

FakeData Package

Acquisition module for generating fake timeseries data for testing purposes.

At present, only a single channel sine wave generator is provided. Available configuration parameters are:

parameter	description
t0	Starting time of signal timebase.
n_samples	Number of samples.
sample_freq	Sample frequency (Hz).
frequency	Frequency of test sine-wave signal (Hz).
amplitude	Amplitude of test sine-wave signal.

All parameters are required.

For example, with the following configuration:

[Acquisition:fake_acq]
acq_class = pyfusion.acquisition.FakeData.acq.FakeDataAcquisition

[Diagnostic:fake_data]
data_fetcher = pyfusion.acquisition.FakeData.fetch.SingleChannelSineFetcher
t0 = 0.0
n_samples = 1024
sample_freq = 1.e6
frequency = 2.e4
amplitude = 2.5

we can generate a 20 kHz sine wave:

>>> import pyfusion as pf
>>> shot = 12345
>>> acq = pf.getAcquisition("fake_acq")
>>> data = acq.getdata(shot, "fake_data")
>>> data.timebase
Timebase([  0.00000000e+00,   1.00000000e-06,   2.00000000e-06, ...,
         1.02100000e-03,   1.02200000e-03,   1.02300000e-03])
>>> data.signal
Signal([ 0.        ,  0.31333308,  0.62172472, ...,  1.20438419,
        0.92031138,  0.62172472])

acq Module

Fake data acquisition used for testing pyfusion code.

class pyfusion.acquisition.FakeData.acq.FakeDataAcquisition(config_name=None, **kwargs)

Bases: pyfusion.acquisition.base.BaseAcquisition

Acquisition class for generating fake data for testing purposes.

fetch Module

Fake data acquisition fetchers used for testing pyfusion code.

class pyfusion.acquisition.FakeData.fetch.SingleChannelSineFetcher(acq, shot, config_name=None, **kwargs)

Bases: pyfusion.acquisition.base.BaseDataFetcher

Data fetcher for single channel sine wave.

fetch()

class pyfusion.acquisition.FakeData.fetch.SingleChannelSineUniqueForShotFetcher(acq, shot, config_name=None, **kwargs)

Bases: pyfusion.acquisition.base.BaseDataFetcher

Data fetcher for single channel sine wave, with amplitude determined by shot number.

fetch()

tests Module

Test code for data acquisition.

class pyfusion.acquisition.FakeData.tests.CheckFakeDataAcquisition

Bases: pyfusion.test.tests.PfTestBase

Test the fake data acquisition used for testing.

testBaseClasses()

Make sure FakeDataAcquisition is subclass of Acquisition.

testDeviceConnection()

Check that using config loads the correct acquisition.

testGetDataReturnObject()

Make sure correct data object type is returned

test_get_data()

Check that we end up with the correct data class starting from Device

class pyfusion.acquisition.FakeData.tests.CheckFakeDataFetchers

Bases: pyfusion.test.tests.PfTestBase

test DataFetcher subclasses for fake data acquisition.

test_base_classes()

test_singlechannelsinedf()

class pyfusion.acquisition.FakeData.tests.CheckMultiChannel

Bases: pyfusion.test.tests.PfTestBase

Would prefer this to be in acquisition/tests.py...., but we are using fakedata

test_different_timebase_exception()

test_kwargs_passed_to_channels()

test_list_channels()

test_multi_multichannel()

test_multichannel_single_channels()