def __init__(self,
array,
nodeName,
fileName='',
attributes=None,
iconColor=_defaultIconColor):
""" Constructor.
The name of the field must be given to the nodeName parameter.
The attributes can be set so the parent's attributes can be reused.
"""
super(FieldRti, self).__init__(nodeName, fileName=fileName)
check_is_an_array(array, allow_none=True)
self._array = array
self._iconColor = iconColor
self._attributes = {} if attributes is None else attributes
def __init__(self,
array,
nodeName='',
fileName='',
attributes=None,
iconColor=_defaultIconColor):
""" Constructor.
:param array: the underlying array. May be undefined (None)
:type array: numpy.ndarray or None
"""
super(ArrayRti, self).__init__(nodeName=nodeName, fileName=fileName)
check_is_an_array(array,
allow_none=True) # TODO: what about masked arrays?
self._array = array
self._iconColor = iconColor
self._attributes = {} if attributes is None else attributes
def __init__(self,
array,
nodeName='',
iconColor=ICON_COLOR_MEMORY,
fileName='',
attributes=None):
""" Constructor.
:param array: the underlying array. May be undefined (None)
:type array: numpy.ndarray or None
"""
super(ArrayRti, self).__init__(nodeName=nodeName,
iconColor=iconColor,
fileName=fileName)
check_is_an_array(array, allow_none=True)
self._array = array
self._attributes = {} if attributes is None else attributes
def __init__(self, data, mask, fill_value):
""" Constructor
:param data:
:param mask: array with mask or single boolean for the complete mask
:param fill_value:
"""
check_is_an_array(data)
check_class(mask, (np.ndarray, bool, np.bool_))
# Init fields
self._data = None
self._mask = None
self._fill_value= None
# Use setters
self.data = data
self.mask = mask
self.fill_value= fill_value
def _openResources(self):
""" Uses numpy.load to open the underlying file
"""
arr = np.load(self._fileName, allow_pickle=ALLOW_PICKLE)
check_is_an_array(arr)
self._array = arr
def getSlicedArray(self, copy=True):
""" Slice the rti using a tuple of slices made from the values of the combo and spin boxes.
:param copy: If True (the default), a copy is made so that inspectors cannot
accidentally modify the underlying of the RTIs. You can set copy=False as a
potential optimization, but only if you are absolutely sure that you don't modify
the the slicedArray in your inspector! Note that this function calls transpose,
which can still make a copy of the array for certain permutations.
:return: Numpy masked array with the same number of dimension as the number of
comboboxes (this can be zero!).
Returns None if no slice can be made (i.e. the RTI is not sliceable).
"""
#logger.debug("getSlicedArray() called")
if not self.rtiIsSliceable:
return None
# The dimensions that are selected in the combo boxes will be set to slice(None),
# the values from the spin boxes will be set as a single integer value
nDims = self.rti.nDims
sliceList = [slice(None)] * nDims
for spinBox in self._spinBoxes:
dimNr = spinBox.property("dim_nr")
sliceList[dimNr] = spinBox.value()
# Make the array slicer. It needs to be a tuple, a list of only integers will be
# interpreted as an index. With a tuple, array[(exp1, exp2, ..., expN)] is equivalent to
# array[exp1, exp2, ..., expN].
# See: http://docs.scipy.org/doc/numpy/reference/arrays.indexing.html
logger.debug("Array slice list: {}".format(str(sliceList)))
slicedArray = self.rti[tuple(sliceList)]
# Make a copy to prevent inspectors from modifying the underlying array.
if copy:
slicedArray = ma.copy(slicedArray)
# If there are no comboboxes the sliceList will contain no Slices objects, only ints. Then
# the resulting slicedArray will be a usually a scalar (only structured fields may yield an
# array). We convert this scalar to a zero-dimensional Numpy array so that inspectors
# always get an array (having the same number of dimensions as the dimensionality of the
# inspector, i.e. the number of comboboxes).
if self.maxCombos == 0:
slicedArray = ma.MaskedArray(slicedArray)
# Post-condition type check
check_is_an_array(slicedArray, np.ndarray)
# Enforce the return type to be a masked array.
if not isinstance(slicedArray, ma.MaskedArray):
slicedArray = ma.MaskedArray(slicedArray)
# Add fake dimensions of length 1 so that result.ndim will equal the number of combo boxes
for dimNr in range(slicedArray.ndim, self.maxCombos):
#logger.debug("Adding fake dimension: {}".format(dimNr))
slicedArray = ma.expand_dims(slicedArray, dimNr)
# Post-condition dimension check
assert slicedArray.ndim == self.maxCombos, \
"Bug: getSlicedArray should return a {:d}D array, got: {}D" \
.format(self.maxCombos, slicedArray.ndim)
# Convert to ArrayWithMask class for working around issues with the numpy maskedarray
awm = ArrayWithMask.createFromMaskedArray(slicedArray)
del slicedArray
# Shuffle the dimensions to be in the order as specified by the combo boxes
comboDims = [self._comboBoxDimensionIndex(cb) for cb in self._comboBoxes]
permutations = np.argsort(comboDims)
logger.debug("slicedArray.shape: {}".format(awm.data.shape))
logger.debug("Transposing dimensions: {}".format(permutations))
awm = awm.transpose(permutations)
awm.checkIsConsistent()
return awm
def getSlicedArray(self, copy=True):
""" Slice the rti using a tuple of slices made from the values of the combo and spin boxes.
:param copy: If True (the default), a copy is made so that inspectors cannot
accidentally modify the underlying of the RTIs. You can set copy=False as a
potential optimization, but only if you are absolutely sure that you don't modify
the the slicedArray in your inspector! Note that this function calls transpose,
which can still make a copy of the array for certain permutations.
:return: ArrayWithMask array with the same number of dimension as the number of
comboboxes (this can be zero!).
Returns None if no slice can be made (i.e. the RTI is not sliceable).
:rtype ArrayWithMask:
"""
#logger.debug("getSlicedArray() called")
if not self._rti:
self.sigShowMessage.emit("No item selected.")
return None
if not self.rtiIsSliceable:
# This is very common so we don't show a message so the user isn't flooded.
# Also this can have many different causes (compound data, lists, etc_ so it's
# difficult to show a good, descriptive message.
return None
if np.prod(self._rti.arrayShape) == 0:
self.sigShowMessage.emit("Selected item has zero array elements.")
return None
# The dimensions that are selected in the combo boxes will be set to slice(None),
# the values from the spin boxes will be set as a single integer value
nDims = self.rti.nDims
sliceList = [slice(None)] * nDims
for spinBox in self._spinBoxes:
dimNr = spinBox.property("dim_nr")
sliceList[dimNr] = spinBox.value()
# Make the array slicer. It needs to be a tuple, a list of only integers will be
# interpreted as an index. With a tuple, array[(exp1, exp2, ..., expN)] is equivalent to
# array[exp1, exp2, ..., expN].
# See: http://docs.scipy.org/doc/numpy/reference/arrays.indexing.html
slicedArray = self.rti[tuple(sliceList)]
# Make a copy to prevent inspectors from modifying the underlying array.
if copy:
if versionStrToTuple(np.__version__) >= (1, 19, 0):
slicedArray = np.copy(slicedArray,
subok=True) # Fixes issue #8
else:
slicedArray = ma.copy(slicedArray)
# If there are no comboboxes the sliceList will contain no Slices objects, only ints. Then
# the resulting slicedArray will be a usually a scalar (only structured fields may yield an
# array). We convert this scalar to a zero-dimensional Numpy array so that inspectors
# always get an array (having the same number of dimensions as the dimensionality of the
# inspector, i.e. the number of comboboxes).
# Also scalar RTIs, which have nDim == 0, can return a scalar which must be converted.
# TODO: perhaps always convert to array.
if self.maxCombos == 0 or self.rti.nDims == 0:
slicedArray = ma.MaskedArray(slicedArray)
# Post-condition type check
check_is_an_array(slicedArray, np.ndarray)
# Enforce the return type to be a masked array.
if not isinstance(slicedArray, ma.MaskedArray):
slicedArray = ma.MaskedArray(slicedArray)
# Add fake dimensions of length 1 so that result.ndim will equal the number of combo boxes
# TODO: Perhaps get rid of this because it fails with masked arrays with fill values.
# The less we do here, the less chance an error occurs. See development/todo.txt
for dimNr in range(slicedArray.ndim, self.maxCombos):
#logger.debug("Adding fake dimension: {}".format(dimNr))
slicedArray = ma.expand_dims(slicedArray, dimNr)
# Post-condition dimension check
assert slicedArray.ndim == self.maxCombos, \
"Bug: getSlicedArray should return a {:d}D array, got: {}D" \
.format(self.maxCombos, slicedArray.ndim)
# Convert to ArrayWithMask class for working around issues with the numpy maskedarray
awm = ArrayWithMask.createFromMaskedArray(slicedArray)
del slicedArray
# Shuffle the dimensions to be in the order as specified by the combo boxes
comboDims = [
self._comboBoxDimensionIndex(cb) for cb in self._comboBoxes
]
permutations = np.argsort(comboDims)
logger.debug("slicedArray.shape: {}".format(awm.data.shape))
logger.debug("Transposing dimensions: {}".format(permutations))
awm = awm.transpose(permutations)
awm.checkIsConsistent()
return awm
def data(self, values):
""" The array values. Must be a numpy array."""
check_is_an_array(values)
self._data = values
def getSlicedArray(self, copy=True):
""" Slice the rti using a tuple of slices made from the values of the combo and spin boxes.
:param copy: If True (the default), a copy is made so that inspectors cannot
accidentally modify the underlying of the RTIs. You can set copy=False as a
potential optimization, but only if you are absolutely sure that you don't modify
the the slicedArray in your inspector! Note that this function calls transpose,
which can still make a copy of the array for certain permutations.
:return: Numpy masked array with the same number of dimension as the number of
comboboxes (this can be zero!).
Returns None if no slice can be made (i.e. the RTI is not sliceable).
"""
#logger.debug("getSlicedArray() called")
if not self.rtiIsSliceable:
return None
# The dimensions that are selected in the combo boxes will be set to slice(None),
# the values from the spin boxes will be set as a single integer value
nDims = self.rti.nDims
sliceList = [slice(None)] * nDims
for spinBox in self._spinBoxes:
dimNr = spinBox.property("dim_nr")
sliceList[dimNr] = spinBox.value()
# Make the array slicer. It needs to be a tuple, a list of only integers will be
# interpreted as an index. With a tuple, array[(exp1, exp2, ..., expN)] is equivalent to
# array[exp1, exp2, ..., expN].
# See: http://docs.scipy.org/doc/numpy/reference/arrays.indexing.html
logger.debug("Array slice list: {}".format(str(sliceList)))
slicedArray = self.rti[tuple(sliceList)]
# Make a copy to prevent inspectors from modifying the underlying array.
if copy:
slicedArray = ma.copy(slicedArray)
# If there are no comboboxes the sliceList will contain no Slices objects, only ints. Then
# the resulting slicedArray will be a usually a scalar (only structured fields may yield an
# array). We convert this scalar to a zero-dimensional Numpy array so that inspectors
# always get an array (having the same number of dimensions as the dimensionality of the
# inspector, i.e. the number of comboboxes).
if self.maxCombos == 0:
slicedArray = ma.MaskedArray(slicedArray)
# Post-condition type check
check_is_an_array(slicedArray, np.ndarray)
# Enforce the return type to be a masked array.
if not isinstance(slicedArray, ma.MaskedArray):
slicedArray = ma.MaskedArray(slicedArray)
# Add fake dimensions of length 1 so that result.ndim will equal the number of combo boxes
for dimNr in range(slicedArray.ndim, self.maxCombos):
#logger.debug("Adding fake dimension: {}".format(dimNr))
slicedArray = ma.expand_dims(slicedArray, dimNr)
# Post-condition dimension check
assert slicedArray.ndim == self.maxCombos, \
"Bug: getSlicedArray should return a {:d}D array, got: {}D" \
.format(self.maxCombos, slicedArray.ndim)
# Convert to ArrayWithMask class for working around issues with the numpy maskedarray
awm = ArrayWithMask.createFromMaskedArray(slicedArray)
del slicedArray
# Shuffle the dimensions to be in the order as specified by the combo boxes
comboDims = [
self._comboBoxDimensionIndex(cb) for cb in self._comboBoxes
]
permutations = np.argsort(comboDims)
logger.debug("slicedArray.shape: {}".format(awm.data.shape))
logger.debug("Transposing dimensions: {}".format(permutations))
awm = awm.transpose(permutations)
awm.checkIsConsistent()
return awm
def _openResources(self):
""" Uses numpy.load to open the underlying file
"""
arr = np.load(self._fileName, allow_pickle=ALLOW_PICKLE)
check_is_an_array(arr)
self._array = arr
def _openResources(self):
""" Evaluates the function to result an array
"""
arr = self._fun()
check_is_an_array(arr)
self._array = arr
