Found 1204 Articles for Numpy

Mask array elements not equal to a given value in Numpy

AmitDiwan
Updated on 04-Feb-2022 11:11:19

396 Views

To mask an array where not equal to a given value, use the numpy.ma.masked_not_equal() method in Python Numpy. This function is a shortcut to masked_where, with condition = (x != value).A masked array is the combination of a standard numpy.ndarray and a mask. A mask is either nomask, indicating that no value of the associated array is invalid, or an array of booleans that determines for each element of the associated array whether the value is valid or not.StepsAt first, import the required library −import numpy as np import numpy.ma as maCreate an array with int elements using the numpy.array() ... Read More

Mask array elements where invalid values NaNs or infs occur in Numpy

AmitDiwan
Updated on 04-Feb-2022 11:08:23

2K+ Views

To mask an array where invalid values occur (NaNs or infs), use the numpy.ma.masked_invalid() method in Python Numpy. This function is a shortcut to masked_where, with condition = ~(np.isfinite(a)). Any pre-existing mask is conserved. Only applies to arrays with a dtype where NaNs or infs make sense (i.e. floating point types), but accepts any array_like object.A masked array is the combination of a standard numpy.ndarray and a mask. A mask is either nomask, indicating that no value of the associated array is invalid, or an array of booleans that determines for each element of the associated array whether the value ... Read More

Mask an array inside a given interval in Numpy

AmitDiwan
Updated on 04-Feb-2022 11:05:20

408 Views

To mask an array inside a given interval, use the numpy.ma.masked_inside() method in Python Numpy. Shortcut to masked_where, where condition is True for x inside the interval [v1,v2] (v1

Return the default fill value for a masked array with float datatype in Numpy

AmitDiwan
Updated on 04-Feb-2022 10:59:51

100 Views

To return the default fill value for an array with float datatype, use the ma.default_fill_value() method in Python Numpy. The default filling value depends on the datatype of the input array or the type of the input scalar −datatypedefaultboolTrueint999999float1.e20complex1.e20+0jobject'?'string'N/A'For structured types, a structured scalar is returned, with each field the default fill value for its type. For subarray types, the fill value is an array of the same size containing the default scalar fill value.StepsAt first, import the required library −import numpy as np import numpy.ma as maCreate an array with float elements using the numpy.array() method −arr = np.array([[72.7, ... Read More

Return the default fill value for the argument object in Numpy

AmitDiwan
Updated on 04-Feb-2022 10:56:03

99 Views

To return the default fill value for the argument object, use the ma.default_fill_value() method in Python Numpy. The default filling value depends on the datatype of the input array or the type of the input scalar −datatypedefaultboolTrueint999999float1.e20complex1.e20+0jobject'?'string'N/A'For structured types, a structured scalar is returned, with each field the default fill value for its type. For subarray types, the fill value is an array of the same size containing the default scalar fill value.StepsAt first, import the required library −import numpy as np import numpy.ma as maCreate an array with int elements using the numpy.array() method −arr = np.array([[65, 68, 81], ... Read More

Mask array elements greater than a given value in Numpy

AmitDiwan
Updated on 04-Feb-2022 10:53:04

740 Views

To mask an array where greater than a given value, use the numpy.ma.masked_greater() method in Python Numpy. This function is a shortcut to masked_where, with condition = (x > value).A masked array is the combination of a standard numpy.ndarray and a mask. A mask is either nomask, indicating that no value of the associated array is invalid, or an array of booleans that determines for each element of the associated array whether the value is valid or not.StepsAt first, import the required library −import numpy as np import numpy.ma as maCreate an array with int elements using the numpy.array() method ... Read More

Mask array elements equal to a given value in Numpy

AmitDiwan
Updated on 04-Feb-2022 10:50:38

572 Views

To mask an array where equal to a given value, use the numpy.ma.masked_equal() method in Python Numpy. This function is a shortcut to masked_where, with condition = (x == value). For floating point arrays, consider using masked_values(x, value).A masked array is the combination of a standard numpy.ndarray and a mask. A mask is either nomask, indicating that no value of the associated array is invalid, or an array of booleans that determines for each element of the associated array whether the value is valid or not.StepsAt first, import the required library −import numpy as np import numpy.ma as maCreate an ... Read More

Return input with invalid data masked and replaced by a fill value in Numpy

AmitDiwan
Updated on 04-Feb-2022 10:45:49

113 Views

To return input with invalid data masked and replaced by a fill value, use the numpy.ma.fix_invalid() method in Python Numpy. A masked array is the combination of a standard numpy.ndarray and a mask. A mask is either nomask, indicating that no value of the associated array is invalid, or an array of booleans that determines for each element of the associated array whether the value is valid or not.StepsAt first, import the required library −import numpy as np import numpy.ma as maCreate an array with int elements using the numpy.array() method −arr = np.array([[65, 68, 81], [93, 33, 39], [73, ... Read More

Convert the input to a masked array conserving subclasses in Numpy

AmitDiwan
Updated on 04-Feb-2022 10:41:28

118 Views

To convert the input to a masked array conserving subclasses, use the numpy.ma.asanyarray() method in Python Numpy. The function returns the MaskedArray interpretation of the input.If the input is a subclass of MaskedArray, its class is conserved. No copy is performed if the input is already an ndarray. The first parameter is the input data, in any form that can be converted to an array. The order parameter suggests whether to use row-major ('C') or column-major ('FORTRAN') memory representation. Default is 'C'.StepsAt first, import the required library −import numpy as np import numpy.ma as maCreate an array with int elements ... Read More

Convert the input to a masked array of the given data-type in Numpy

AmitDiwan
Updated on 04-Feb-2022 10:35:17

702 Views

To convert the input to a masked array of the given data-type, use the numpy.ma.asarray() method in Python Numpy. No copy is performed if the input is already an ndarray. If the input data is a subclass of MaskedArray, a base class MaskedArray is returned.The first parameter is the input data, in any form that can be converted to a masked array. The functions returns the Masked array interpretation of the first parameter. This includes lists, lists of tuples, tuples, tuples of tuples, tuples of lists, ndarrays and masked arrays. The order parameter suggests whether to use row-major ('C') or ... Read More

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