Hi COOT users,

I was looking at the COOT tutorial and saw the following explanation:

*"It can be educational (even useful at lower resolutions) to sharpen or
blur a map. This can be achieved with the sharpening tool Calculate -> Map
Sharpening.... By default, the maximum and minimum sharpness is +/- 30Å^2,
this can be changed (in this case to 80) using:*


*(set-map-sharpening-scale-limit 80)" *

On COOT, I see it now goes to +/-200, meaning the current minimum and
maximum sharpness is +/-75Å^2
??

In the COOT mail archives I found the following reply by Paul Emsley:

*It scales all amplitudes (whichever you chose when you read in the
mtz file) by the application of a negative (or positive) B-factor. So
the scale factor is a function of resolution and nothing more (at the
moment).*

*Paul.*



So just to clarify, the sharpen/blur sliding ruler scales ALL original
B-factor's by an identical value and the it ranges from +/-75??


Thank you,


George

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