Critical fix for the slicing of values in target function.
This makes system test: Relax_disp.test_sod1wt_t25_to_cr72 pass.
Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.
Authored by: tlinnet 2014-06-08
Parent: [r23739]
Child: [r23741]
