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Application Programming: Expressions and Operators |
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IDL has two operators used to multiply arrays and matrices. For an example illustrating the difference between the two, see Multiplying Arrays.
| Tip If one or both of the arrays are also transposed as part of a matrix multiplication, such as TRANSPOSE(A) # B, it is more efficient to use the MATRIX_MULTIPLY function, which does the transpose simultaneously with the multiplication. |
IDL Online Help (March 06, 2007)