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physical dimensions and array dimensions


physical dimensions and array dimensions

By : Deco234
Date : October 19 2020, 08:10 AM
will be helpful for those in need I believe that the rainfall value shouldn't be a dimension. Therefore, you could use 2D array[lat][lon] = rainfall_value or 3D array[time][lat][lon] = rainfall_value respectively.
If you want to reduce number of dimensions further, you can combine latitude and longitude into one dimension as you suggested, which would make arrays 1D/2D.
code :


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Store physical dimensions in MySQL

Store physical dimensions in MySQL


By : digital_project
Date : March 29 2020, 07:55 AM
this will help If you store physical dimensions of an object, that is far away from anything which a spatial datatype tries to represent. Spatial Datatypes are for Location-Information (e.g. Points on globe or Points on a plane) and contain x and y values for geometry data (describing local spaces, like Football fields) or longitude and latitude (describing global spaces)
Subtract matrix of n,k dimensions from array of matrices of n,k dimensions

Subtract matrix of n,k dimensions from array of matrices of n,k dimensions


By : Ty Rayshaun
Date : March 29 2020, 07:55 AM
To fix this issue If I have an array A , This is what sweep is for.
code :
sweep(A, 1:2, B)
Make div with opacity:0 have no physical dimensions

Make div with opacity:0 have no physical dimensions


By : user2880102
Date : March 29 2020, 07:55 AM
should help you out I have a terrific solution which I use often. On the element with opacity: 0 put pointer-events: none. It will still have the dimensions, but it will be as if all events are inactive. Then when you want it to be opacity: 1, return pointer-events to auto. This is the next best thing to using display: block/none but it can be transitioned!
Construct 3 dimensions array from two dimensions array using tile

Construct 3 dimensions array from two dimensions array using tile


By : blackmaler
Date : March 29 2020, 07:55 AM
I hope this helps you . Simply use np.broadcast_to for a view -
code :
In [142]: arr = np.array([0.0, 0.0, 1.0])

In [144]: np.broadcast_to(arr,(2,3,3))
Out[144]: 
array([[[0., 0., 1.],
        [0., 0., 1.],
        [0., 0., 1.]],

       [[0., 0., 1.],
        [0., 0., 1.],
        [0., 0., 1.]]])
In [148]: arr = np.random.rand(300)

In [149]: %timeit np.broadcast_to(arr,(200,300,300))
100000 loops, best of 3: 3.13 µs per loop
In [174]: np.tile(arr,(2,3,1))
Out[174]: 
array([[[0., 0., 1.],
        [0., 0., 1.],
        [0., 0., 1.]],

       [[0., 0., 1.],
        [0., 0., 1.],
        [0., 0., 1.]]])
How to convert array from (x,y)(z) dimensions into (x,y) dimensions?

How to convert array from (x,y)(z) dimensions into (x,y) dimensions?


By : Troy Gray
Date : March 29 2020, 07:55 AM
will help you Each element of the Bloomberg array is returning 2 sets of data. The key is to have your array have double the number of elements of the top level Bloomberg array.
code :
Sub ConvertBloombergTestData()
    Dim r As Variant
    r = getBloombergTestData

    Dim Values  As Variant
    Dim n As Long
    Dim j As Long
    Dim Item
    ReDim Values(1 To (UBound(r) + 1) * 2, 1 To 2)
    For n = LBound(r) To UBound(r)
        j = j + 1
        Item = r(n, 0)
        Values(j, 1) = Item(0)
        Values(j, 2) = Item(1)
        Item = r(n, 1)
        j = j + 1
        Values(j, 1) = Item(0)
        Values(j, 2) = Item(1)
    Next

End Sub
Sub Test()
    Dim r As Variant, Values  As Variant
    r = getBloombergTestData
    Values = ConvertBloombergArrayTo2d(r)
End Sub

Function ConvertBloombergArrayTo2d(BloombergArray)
    Dim Map As New Collection

    FlattenArray Map, BloombergArray

    Dim Results As Variant
    ReDim Results(1 To Map.Count / 2, 1 To 2)
    Dim n As Long, j As Long

    For n = 1 To Map.Count Step 2
        j = j + 1
        Results(j, 1) = Map.Item(n)
        Results(j, 2) = Map.Item(n + 1)
    Next
    ConvertBloombergArrayTo2d = Results
End Function

Sub FlattenArray(Map As Collection, Element As Variant)
    If Right(TypeName(Element), 2) = "()" Then
        Dim Item
        For Each Item In Element
            FlattenArray Map, Item
        Next
    Else
        Map.Add Element
    End If
End Sub
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