We do not have a user-exposed tool to compute exact map on the grid (using n-gaussian approximation, that is the default in Phenix). However you can calculate a Fourier map coefficients of very high resolution (say 0.5-1A) and then convert it into actual map using phenix.mtz2map; this should be a good approximation.

Pavel

On 8/15/14, 1:19 PM, PC wrote:

I want map for this PDB which does not have the SF.

So what should I do?
-----Original Message-----
From: [email protected]
Sent: Fri, 15 Aug 2014 13:09:51 -0700
To: [email protected]
Subject: Re: [phenixbb] maps for PDB without SF's
Hello PC,

what you get is not the electron density map but its Fourier image of finite resolution. This is where the noise comes from. So... I'm puzzled what surprises you (or what is your question)?

Pavel

On 8/15/14, 12:59 PM, PC wrote:
Hi,

I wanted to generate a map using calculate f(model) with fake P1 symmetry.

The output is very noisy (blurred) when I open it in COOT.

(NO there are no structure factors for this PDB entry).

Thanks.

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