PointWithDescription¶
- class PointWithDescription(*args)¶
Collection of real values with a description for each component.
- Available constructors:
PointWithDescription(size=0, value=0.0)
PointWithDescription(sequence)
- Parameters:
- sizeint,
Size of the vector.
- valuefloat
Value set to the size elements.
- sequencesequence of pair (string, float)
Components of the vector.
Examples
>>> import openturns as ot
Use the first constructor:
>>> print(ot.PointWithDescription(2)) [ : 0, : 0] >>> vector = ot.PointWithDescription(2, 3.0) >>> print(vector) [ : 3, : 3] >>> vector.setDescription(['c1', 'c2']) >>> print(vector) [c1 : 3, c2 : 3]
Use the second constructor:
>>> vector = ot.PointWithDescription([('C1', 2.0), ('C2', 3.0), ('C3', 4.5)]) >>> print(vector) [C1 : 2, C2 : 3, C3 : 4.5] >>> print(vector.getDescription()) [C1,C2,C3]
Use some functionalities:
>>> vector[1] = 7.1 >>> print(vector) [C1 : 2, C2 : 7.1, C3 : 4.5] >>> vector.add(6.2) >>> print(vector) [C1 : 2, C2 : 7.1, C3 : 4.5, : 6.2]
Methods
add
(*args)Append a component (in-place).
at
(*args)Access to an element of the collection.
clear
()Reset the collection to zero dimension.
dot
(rhs)Compute the scalar product.
find
(val)Find the index of a given value.
Accessor to the object's name.
Accessor to the componentwise description.
Accessor to the vector's dimension.
getName
()Accessor to the object's name.
getSize
()Accessor to the vector's dimension (or size).
hasName
()Test if the object is named.
Check if the components are in decreasing order.
isEmpty
()Tell if the collection is empty.
Check if the components are in increasing order.
Check if the components are in nonincreasing or nondecreasing order.
Check if the components are in nondecreasing order.
Check if the components are in nonincreasing order.
norm
()Compute the Euclidean () norm.
norm1
()Compute the norm.
normInf
()Compute the norm.
Compute the squared Euclidean norm.
Compute the normalized vector with respect to its Euclidean norm.
Compute the normalized vector with respect to its squared Euclidean norm.
resize
(newSize)Change the size of the collection.
select
(marginalIndices)Selection from indices.
setDescription
(description)Accessor to the componentwise description.
setName
(name)Accessor to the object's name.
- __init__(*args)¶
- add(*args)¶
Append a component (in-place).
- Parameters:
- valuetype depends on the type of the collection.
The component to append.
Examples
>>> import openturns as ot >>> x = ot.Point(2) >>> x.add(1.) >>> print(x) [0,0,1]
- at(*args)¶
Access to an element of the collection.
- Parameters:
- indexpositive int
Position of the element to access.
- Returns:
- elementtype depends on the type of the collection
Element of the collection at the position index.
- clear()¶
Reset the collection to zero dimension.
Examples
>>> import openturns as ot >>> x = ot.Point(2) >>> x.clear() >>> x class=Point name=Unnamed dimension=0 values=[]
- dot(rhs)¶
Compute the scalar product.
- Parameters:
- pointsequence of float
Scalar product second argument
- Returns:
- dotfloat
Scalar product
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> prod = x.dot([4, 5, 6])
- find(val)¶
Find the index of a given value.
- Parameters:
- valcollection value type
The value to find
- Returns:
- indexint
The index of the first occurrence of the value, or the size of the container if not found. When several values match, only the first index is returned.
- getClassName()¶
Accessor to the object’s name.
- Returns:
- class_namestr
The object class name (object.__class__.__name__).
- getDescription()¶
Accessor to the componentwise description.
- Returns:
- description
Description
Description of the components.
- description
See also
- getDimension()¶
Accessor to the vector’s dimension.
- Returns:
- nint
The number of components in the vector.
- getName()¶
Accessor to the object’s name.
- Returns:
- namestr
The name of the object.
- getSize()¶
Accessor to the vector’s dimension (or size).
- Returns:
- nint
The number of components in the vector.
- hasName()¶
Test if the object is named.
- Returns:
- hasNamebool
True if the name is not empty.
- isDecreasing()¶
Check if the components are in decreasing order.
Examples
>>> import openturns as ot >>> x = ot.Point([3.0, 2.0, 1.0]) >>> x.isDecreasing() True >>> x = ot.Point([3.0, 3.0, 1.0]) >>> x.isDecreasing() False >>> x = ot.Point([1.0, 3.0, 2.0]) >>> x.isIncreasing() False
- isEmpty()¶
Tell if the collection is empty.
- Returns:
- isEmptybool
True if there is no element in the collection.
Examples
>>> import openturns as ot >>> x = ot.Point(2) >>> x.isEmpty() False >>> x.clear() >>> x.isEmpty() True
- isIncreasing()¶
Check if the components are in increasing order.
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> x.isIncreasing() True >>> x = ot.Point([1.0, 1.0, 3.0]) >>> x.isIncreasing() False >>> x = ot.Point([1.0, 3.0, 2.0]) >>> x.isIncreasing() False
- isMonotonic()¶
Check if the components are in nonincreasing or nondecreasing order.
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> x.isMonotonic() True >>> x = ot.Point([2.0, 2.0, 1.0]) >>> x.isMonotonic() True >>> x = ot.Point([1.0, 3.0, 2.0]) >>> x.isMonotonic() False
- isNonDecreasing()¶
Check if the components are in nondecreasing order.
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> x.isNonDecreasing() True >>> x = ot.Point([1.0, 1.0, 3.0]) >>> x.isNonDecreasing() True >>> x = ot.Point([1.0, 3.0, 2.0]) >>> x.isNonDecreasing() False
- isNonIncreasing()¶
Check if the components are in nonincreasing order.
Examples
>>> import openturns as ot >>> x = ot.Point([3.0, 2.0, 1.0]) >>> x.isNonIncreasing() True >>> x = ot.Point([3.0, 3.0, 1.0]) >>> x.isNonIncreasing() True >>> x = ot.Point([1.0, 3.0, 2.0]) >>> x.isNonIncreasing() False
- norm()¶
Compute the Euclidean () norm.
The Euclidean () norm of a vector is defined as:
- Returns:
- normfloat
The vector’s Euclidean norm.
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> x.norm() 3.741657...
- norm1()¶
Compute the norm.
The norm of a vector is defined as:
- Returns:
- normfloat
The vector’s norm.
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> x.norm1() 6.0
- normInf()¶
Compute the norm.
The norm of a vector is defined as:
- Returns:
- normfloat
The vector’s norm.
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> x.normInf() 3.0
- normSquare()¶
Compute the squared Euclidean norm.
- Returns:
- normfloat
The vector’s squared Euclidean norm.
See also
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> x.normSquare() 14.0
- normalize()¶
Compute the normalized vector with respect to its Euclidean norm.
- Returns:
- normalized_vector
Point
The normalized vector with respect to its Euclidean norm.
- normalized_vector
- Raises:
- RuntimeErrorIf the Euclidean norm is zero.
See also
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> print(x.normalize()) [0.267261,0.534522,0.801784]
- normalizeSquare()¶
Compute the normalized vector with respect to its squared Euclidean norm.
- Returns:
- normalized_vectornormalized_vector
Point
The normalized vector with respect to its squared Euclidean norm.
- normalized_vectornormalized_vector
- Raises:
- RuntimeErrorIf the squared Euclidean norm is zero.
See also
Examples
>>> import openturns as ot >>> x = ot.Point([1.0, 2.0, 3.0]) >>> print(x.normalizeSquare()) [0.0714286,0.285714,0.642857]
- resize(newSize)¶
Change the size of the collection.
- Parameters:
- newSizepositive int
New size of the collection.
Notes
If the new size is smaller than the older one, the last elements are thrown away, else the new elements are set to the default value of the element type.
Examples
>>> import openturns as ot >>> x = ot.Point(2, 4) >>> print(x) [4,4] >>> x.resize(1) >>> print(x) [4] >>> x.resize(4) >>> print(x) [4,0,0,0]
- select(marginalIndices)¶
Selection from indices.
- Parameters:
- indicessequence of int
Indices to select
- Returns:
- collsequence
Sub-collection of values at the selection indices.
- setDescription(description)¶
Accessor to the componentwise description.
- Parameters:
- descriptionsequence of str
Description of the components.
- setName(name)¶
Accessor to the object’s name.
- Parameters:
- namestr
The name of the object.
Examples using the class¶
Analyse the central tendency of a cantilever beam