next up previous contents index
Next: MAP_PRECIS Up: UV_MAP Previous: MAP_FIELD   Contents   Index


MAP_POWER

      MAP_POWER[2]     Integer

    Maximum  exponent  of  3  and  5 allowed in automatic guess of MAP_SIZE.
    MAP_SIZE is decomposed in 2^k 3^p 5^q, and p and q must be less or equal
    to MAP_POWER.

    Default is 0: MAP_SIZE is just a power of 2. A value of 1 allows approx-
    imation of any map size to 20 %, while a value of 2 allows 10 % approxi-
    mation.  Fast Fourier Transform are slightly slower with powers of 3 and
    5, but limiting the map size can gain a  lot  in  the  Cleaning  process
    (which can scale as MAP_SIZE^4).


Gildas manager 2023-06-01