CODEWITHSUNDEEP
arraysfortrangfortran
An student
An student

Reputation: 392

Incompatible rank 0 and 1 in fortran

ab is a 4 x 5 matrix i.e., ab(4,5) and x is an array of length 4 i.e., x(4)

x(4) = ab(4,5)/ab(4,4)
do i = 3, 1, -1
    x(i) = ( ab(i,5) - ab(i,i+1:4) * x(i+1:4) ) / ab(i,i)
end do

The do loop says incompatible rank 0 and 1.

Upvotes: 1

Views: 198

Answers (1)

RussF
RussF

Reputation: 721

You can use the SUM function in order to reduce the array multiplication to a scalar. i.e. x(i) = ( ab(i,5) - SUM(ab(i,i+1:4) * x(i+1:4)) ) / ab(i,i). Alternatively, the DOT_PRODUCT function could be used DOT_PRODUCT(ab(i,i+1:4) , x(i+1:4))

Upvotes: 1

Related Questions