[phenixbb] autosolve density modification question

[Pavel Afonine]

Hi Scott,

I'm sure Tom will address the rest in more details. Just one general 
comment:

> I am currently assuming that the histogram matching does not use model 
> building as part of it

This is a reasonable expectation since density modification and model 
building are two logically separate tasks that can benefit from each 
other in a number of ways but do not need to be executed all together.

Density modification is a process of non-linear map transformation with 
the purpose to impose some prior knowledge on the map and thus improve 
its quality. Note: no model or model building is involved into the 
definition! PRISM approach may brake this logic, but you were specific 
enough with your question by mentioning "histogram matching", so this 
does not really apply then.

Pavel