object VectorD extends Serializable
The VectorD
object is the companion object for the VectorD
class.
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def
++(b: Double, u: VectorD): VectorD
Concatenate scalar 'b' and vector 'u'.
Concatenate scalar 'b' and vector 'u'.
- b
the scalar to be concatenated - first part
- u
the vector to be concatenated - second part
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def
apply(xs: Array[String], skip: Int): VectorD
Create a
VectorD
from an array of Strings, skipping the first 'skip' elements.Create a
VectorD
from an array of Strings, skipping the first 'skip' elements. If an element is non-numeric, use its hashcode. FIX: Might be better to map non-numeric Strings to ordinal values.- xs
the array of the Strings
- skip
the number of elements at the beginning to skip (e.g., id column)
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def
apply(xs: Array[String]): VectorD
Create a
VectorD
from an array of Strings.Create a
VectorD
from an array of Strings.- xs
the array of the Strings
-
def
apply(x: String, xs: String*): VectorD
Create a
VectorD
from one or more values (repeated values String*).Create a
VectorD
from one or more values (repeated values String*).- x
the first String
- xs
the rest of the Strings
-
def
apply(xs: Seq[Double]): VectorD
Create a
VectorD
from a sequence of Doubles.Create a
VectorD
from a sequence of Doubles.- xs
the sequence of the Double numbers
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def
apply(x: Double, xs: Double*): VectorD
Create a
VectorD
from one or more values (repeated values Double*).Create a
VectorD
from one or more values (repeated values Double*).- x
the first Double number
- xs
the rest of the Double numbers
-
def
one(size: Int): VectorD
Create a one vector (all elements are one) of length 'size'.
Create a one vector (all elements are one) of length 'size'.
- size
the size of the vector
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def
range(start: Int, end: Int): VectorD
Return a
VectorD
containing a sequence of increasing integers in a range.Return a
VectorD
containing a sequence of increasing integers in a range.- start
the start value of the vector, inclusive
- end
the end value of the vector, exclusive (i.e., the first value not returned)