Array Terminology

Examples of declarations:

    REAL, DIMENSION(15)      :: X
    REAL, DIMENSION(1:5,1:3) :: Y, Z

The above are explicit-shape arrays.

Terminology:

• rank -- number of dimensions.

  Rank of X is 1; rank of Y and Z is 2.

• bounds -- upper and lower limits of indices.

  Bounds of X are 1 and 15; Bound of Y and Z are 1 and 5 and 1 and 3.

• extent -- number of elements in dimension;

  Extent of X is 15; extents of Y and Z are 5 and 3.

• size -- total number of elements.

  Size of X, Y and Z is 15.

• shape -- rank and extents;

  Shape of X is 15; shape of Y and Z is 5,3.

• conformable -- same shape.

  Y and Z are conformable.

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