natural
Natural ordering of the points of this rank-1 lattice
Specification
Alias: None
Arguments: None
Description
Returns the points in natural order.
Usage Tips
When the natural
ordering of the points is used, it is implicitly assumed that the user will
only request a number of points that is a power of 2. Failing to do so will result in a set of points
for which one or more dimensions are not uniformly covered, resulting in bad low-discrepancy properties,
and ultimately bad performance of the method that uses these points. It is recommended to not use this option unless you know what you’re doing.
Examples
environment
tabular_data
tabular_data_file = 'samples.dat'
freeform
method
sampling
samples 8
sample_type
low_discrepancy
rank_1_lattice
generating_vector inline 1 5 # this is a Fibonacci lattice
m_max 3 # 8 points in total
no_random_shift
ordering natural # this is fine since we generate 2^3 = 8 samples
variables
uniform_uncertain = 2
lower_bounds 0.0 0.0
upper_bounds 1.0 1.0
interface
analysis_drivers = 'genz'
analysis_components = 'cp1'
direct
responses
response_functions = 1
no_gradients
no_hessians