[ENH] - Add & update for string report from data objects

specparam/data/data.py

@@ -9,6 +9,7 @@
 from specparam.data import SpectrumMetaData, ModelChecks
 from specparam.utils.spectral import trim_spectrum
 from specparam.utils.checks import check_input_options
+from specparam.reports.strings import gen_data_str
 from specparam.modutils.errors import DataError, InconsistentDataError
 from specparam.modutils.docs import docs_get_section, replace_docstring_sections
 from specparam.plts.settings import PLT_COLORS
@@ -77,6 +78,17 @@ def has_data(self):
         return bool(np.any(self.power_spectrum))
 
 
+    @property
+    def n_freqs(self):
+        """Indicator for the number of frequency values."""
+
+        n_freqs = None
+        if self.has_data:
+            n_freqs = len(self.freqs)
+
+        return n_freqs
+
+
     def add_data(self, freqs, power_spectrum, freq_range=None):
         """Add data (frequencies, and power spectrum values) to the current object.
 
@@ -151,6 +163,18 @@ def plot(self, plt_log=False, **plt_kwargs):
                      log_powers=False, **data_kwargs)
 
 
+    def print(self, concise=False):
+        """Print out a data summary.
+
+        Parameters
+        ----------
+        concise : bool, optional, default: False
+            Whether to print the report in a concise mode, or not.
+        """
+
+        print(gen_data_str(self, concise))
+
+
     def set_checks(self, check_freqs=None, check_data=None):
         """Set check statuses, which control if an error is raised based on check on the inputs.
 
@@ -330,6 +354,17 @@ def has_data(self):
         return bool(np.any(self.power_spectra))
 
 
+    @property
+    def n_spectra(self):
+        """Indicator for the number of power spectra."""
+
+        n_spectra = None
+        if self.has_data:
+            n_spectra = len(self.power_spectra)
+
+        return n_spectra
+
+
     def add_data(self, freqs, power_spectra, freq_range=None):
         """Add data (frequencies and power spectrum values) to the current object.
 
@@ -515,6 +550,17 @@ def n_events(self):
         return len(self.spectrograms)
 
 
+    @property
+    def n_spectra(self):
+        """Redefine n_spectra marker to reflect the total number of spectra."""
+
+        n_spectra = None
+        if self.has_data:
+            n_spectra = self.n_events * self.n_time_windows
+
+        return n_spectra
+
+
     def add_data(self, freqs, spectrograms, freq_range=None):
         """Add data (frequencies and spectrograms) to the current object.
 

specparam/reports/strings.py

@@ -118,6 +118,56 @@ def gen_version_str(concise=False):
     return output
 
 
+def gen_data_str(data, concise=False):
+    """Generate a string representation summarizing current data.
+
+    Parameters
+    ----------
+    data : Data
+        Data object to summarize data for.
+        Can also be any derived data object (e.g. Data2D).
+    concise : bool, optional, default: False
+        Whether to print the report in concise mode.
+
+    Returns
+    -------
+    output : str
+        Formatted string of data summary.
+    """
+
+    if not data.has_data:
+
+        no_data_str = "No data currently loaded in the object."
+        str_lst = [DIVIDER,'', no_data_str, '', DIVIDER]
+
+    else:
+
+        # Get number of spectra, checking attributes for {Data3D, Data2DT, Data2D, Data}
+        if getattr(data, 'n_events', None):
+            n_spectra_str = '{} spectrograms with {} windows each'.format(data.n_events, data.n_time_windows)
+        elif getattr(data, 'n_time_windows', None):
+            n_spectra_str = '1 spectrogram with {} windows'.format(data.n_time_windows)
+        elif getattr(data, 'n_spectra', None):
+            n_spectra_str = '{} power spectra'.format(data.n_spectra)
+        else:
+            n_spectra_str = '1 power spectrum'
+
+        str_lst = [
+
+            DIVIDER,
+            '',
+            'The data object contains {}'.format(n_spectra_str),
+            'with a frequency range of {} Hz'.format(data.freq_range),
+            'and a frequency resolution of {} Hz.'.format(data.freq_res),
+            '',
+            DIVIDER,
+        ]
+
+    output = _format(str_lst, concise)
+
+    return output
+
+
 def gen_modes_str(modes, description=False, concise=False):
     """Generate a string representation of fit modes.
 

specparam/tests/conftest.py

@@ -8,9 +8,9 @@
 
 from specparam.modutils.dependencies import safe_import
 
-from specparam.tests.tdata import (get_tdata, get_tdata2d, get_tfm, get_tfm2, get_tfg, get_tfg2,
-                                   get_tft, get_tfe, get_tbands, get_tresults, get_tmodes,
-                                   get_tdocstring)
+from specparam.tests.tdata import (get_tdata, get_tdata2d, get_tdata2dt, get_tdata3d,
+                                   get_tfm, get_tfm2, get_tfg, get_tfg2, get_tft, get_tfe,
+                                   get_tbands, get_tresults, get_tmodes, get_tdocstring)
 from specparam.tests.tsettings import (BASE_TEST_FILE_PATH, TEST_DATA_PATH,
                                        TEST_REPORTS_PATH, TEST_PLOTS_PATH)
 
@@ -67,6 +67,14 @@ def tdata():
 def tdata2d():
     yield get_tdata2d()
 
+@pytest.fixture(scope='session')
+def tdata2dt():
+    yield get_tdata2dt()
+
+@pytest.fixture(scope='session')
+def tdata3d():
+    yield get_tdata3d()
+
 @pytest.fixture(scope='session')
 def tfm():
     yield get_tfm()

specparam/tests/data/test_data.py

@@ -16,13 +16,16 @@ def test_data():
 
     tdata = Data()
     assert tdata
+    assert not tdata.has_data
+    assert not tdata.n_freqs
 
 def test_data_add_data():
 
     tdata = Data()
     freqs, pows = np.array([1, 2, 3]), np.array([10, 10, 10])
     tdata.add_data(freqs, pows)
     assert tdata.has_data
+    assert tdata.n_freqs == len(freqs)
 
 def test_data_meta_data():
 
@@ -66,13 +69,15 @@ def test_data2d():
     assert tdata2d
     assert isinstance(tdata2d, Data)
     assert isinstance(tdata2d, Data2D)
+    assert not tdata2d.has_data
 
 def test_data2d_add_data():
 
     tdata2d = Data2D()
     freqs, pows = np.array([1, 2, 3]), np.array([[10, 10, 10], [20, 20, 20]])
     tdata2d.add_data(freqs, pows)
     assert tdata2d.has_data
+    assert tdata2d.n_spectra == len(pows)
 
 @plot_test
 def test_data2d_plot(tdata2d, skip_if_no_mpl):
@@ -88,6 +93,7 @@ def test_data2dt():
     assert isinstance(tdata2dt, Data)
     assert isinstance(tdata2dt, Data2D)
     assert isinstance(tdata2dt, Data2DT)
+    assert not tdata2dt.has_data
 
 def test_data2dt_add_data():
 
@@ -96,7 +102,7 @@ def test_data2dt_add_data():
     tdata2dt.add_data(freqs, pows)
     assert tdata2dt.has_data
     assert np.all(tdata2dt.spectrogram)
-    assert tdata2dt.n_time_windows
+    assert tdata2dt.n_spectra == tdata2dt.n_time_windows == len(pows.T)
 
 ## 3D Data Object
 
@@ -108,6 +114,7 @@ def test_data3d():
     assert isinstance(tdata3d, Data2D)
     assert isinstance(tdata3d, Data2DT)
     assert isinstance(tdata3d, Data3D)
+    assert not tdata3d.has_data
 
 def test_data3d_add_data():
 
@@ -117,3 +124,4 @@ def test_data3d_add_data():
     assert tdata3d.has_data
     assert np.all(tdata3d.spectrograms)
     assert tdata3d.n_events
+    assert tdata3d.n_spectra == 2 * len(pows.T)

specparam/tests/reports/test_strings.py

@@ -14,6 +14,13 @@ def test_gen_version_str():
 
     assert gen_version_str()
 
+def test_gen_data_str(tdata, tdata2d, tdata2dt, tdata3d):
+
+    assert gen_data_str(tdata)
+    assert gen_data_str(tdata2d)
+    assert gen_data_str(tdata2dt)
+    assert gen_data_str(tdata3d)
+
 def test_gen_modes_str(tfm):
 
     assert gen_modes_str(tfm.modes)

specparam/tests/tdata.py

@@ -4,7 +4,7 @@
 
 from specparam.bands import Bands
 from specparam.modes.modes import Modes
-from specparam.data.data import Data, Data2D
+from specparam.data.data import Data, Data2D, Data2DT, Data3D
 from specparam.data.stores import FitResults
 from specparam.models import (SpectralModel, SpectralGroupModel,
                               SpectralTimeModel, SpectralTimeEventModel)
@@ -50,6 +50,26 @@ def get_tdata2d():
 
     return tdata2d
 
+def get_tdata2dt():
+
+    n_spectra = 3
+    tdata2dt = Data2DT()
+    tdata2dt.add_data(*sim_spectrogram(n_spectra, *default_group_params()))
+
+    return tdata2dt
+
+def get_tdata3d():
+
+    n_events = 2
+    n_spectra = 3
+    tdata3d = Data3D()
+    freqs, spectrogram = sim_spectrogram(n_spectra, *default_group_params())
+    tdata3d.add_data(freqs, [spectrogram] * n_events)
+
+    return tdata3d
+
+## TEST MODEL OBJECTS
+
 def get_tfm():
     """Get a model object, with a fit power spectrum, for testing."""
 
@@ -117,6 +137,8 @@ def get_tfe():
 
     return tfe
 
+## TEST OTHER OBJECTS
+
 def get_tbands():
     """Get a bands object, for testing."""