### AST.ZERO_FREEZE

Prevent the AST mask from changing after a given number of iterations. This can help convergence

#### Description:

If ast.zero_freeze is 1.0 or more, the AST mask will be frozen after the specified number of iterations (the nearest integer value is used). Note, any initial iterations specified by parameter "ast.skip" are not included in the count of iterations. If ast.zero_freeze is greater than zero but less than 1.0, the AST mask will be frozen when the normalized change in the map between iterations drops below the ast.zero_freeze value. A value less than or equal to zero means that the mask is never frozen. [0.0]
Type:
real

MAKEMAP, CALCQU