Comparing maps sounds just like the sort of thing the Uppsala suite did. Maybe 
you can find an old binary for mapman or mapman2(?) or compile it from Martin 
Winn's github page. The closest I can find is EDSTATS which I think is in the 
old ccp4 gui.

Best wishes, Jon Cooper.
jon.b.coo...@protonmail.com

Sent from Proton Mail Android

-------- Original Message --------
On 14/06/2024 20:58, Matt Mcleod  wrote:

> I should clarify. I am mostly concerned about the electron density map.
>
> I want to make sure that I can most closely compare the maps from two 
> different quality structures, rather than the datasets themselves via CC1/2 
> or other metrics. This is more so for interpreting structural changes.
>
> For example, if there is sparse density for some particular thing indicating 
> partial occupancy, how can I compare those two maps. So for low-resolution 
> datasets, maybe there is less density but is that because of data quality or 
> because in that dataset there is a lower occupancy through some meaningful 
> structural change (compared to higher resolution/better data)?
>
> On Fri, 14 Jun 2024 at 14:16, Matt McLeod <mjmcleo...@gmail.com> wrote:
>
>> Hi all,
>>
>> I am wondering what the best practice is to compare datasets that are of the 
>> same protein but different quality, for instance 2 vs. 3 A.
>>
>> I know that truncating the structures to the same resolution bin is alright, 
>> but the data quality in the lower resolution bins are also not the same. Is 
>> there a way to "inject" noise into the data such that the bins are more 
>> similar?
>>
>> These datasets cannot be recollected at higher resolution since they are 
>> collected at increasingly high pressure, and the resolution change is 
>> anticorrelated with the pressure; no way to get around crystal stability.
>>
>> Any suggestions are appreciated,
>> Matt
>>
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> --
>
> Matthew Jordan McLeod, PhD
> Post-Doctoral Fellow - Cornell University
>
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