Frozen merge like lisp

[shwilks]

Merging map (introducing data in frozen and unfrozen maps): recently, Sarah also commented on the fact that the merging options in acmacs are not the same as in lisp. It would be useful for us to be able to merge maps into a frozen map (i.e. the points in the frozen map are not allowed to move and the new data can be optimized 10 times (I think this is how it was done in lisp)).

[shwilks]

From Sarah:

Like a frozen merge in lispmds. You have a map and a table. The map is frozen - the points are not allowed to move. The data from the table is merged in. Antigens and sera in both datasets take the map position.

[skepner]

There is a naming confusion, every person has their own notion of "frozen", "overlay", etc. merge. I discussed it with Sarah a while ago, please see acorg/acmacs.r#5

[shwilks]

great, thanks for the link, didn't realise Sarah had already requested the feature.