.alm files in CRYSOL

Calculation of SAXS and SANS profiles (CRYSOL, CRYSON), superposition of models (SUPCOMB, DAMAVER, DAMCLUST), database DARA
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qwerty
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Joined: 2008.06.17 18:55

.alm files in CRYSOL

#1 Post by qwerty » 2008.06.17 20:03

Hi,

The ".alm" files produced from CRYSOL contain binary data. Is there a reader that reads these partial amplitudes?

Also, ".flm" files have 6 columns(from line 3 and beyon). My guess is that the first four columns are " l m real(flm) imag(flm) " in that order. Is that correct?

There are two other columns that are always 1 and 0. What do they stand for?

Theoretically, if we plot a surface using these "flm" coefficients, we should get a close approximation to the envelope of the protein. Is that correct?


regards

SaxsMax
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#2 Post by SaxsMax » 2008.06.23 11:06

The ".alm" files produced from CRYSOL contain binary data. Is there a reader that reads these partial amplitudes?
You may try conv_alm.exe (available on ftp)
Also, ".flm" files have 6 columns(from line 3 and beyon). My guess is that the first four columns are " l m real(flm) imag(flm) " in that order. Is that correct?
Yes, that is correct
There are two other columns that are always 1 and 0. What do they stand for?
1 0 means that the imaginary part of this harmonic is always zero.
In Crysol Flms it is only for Yl0. There were other programs
that output Flms taking symmetry into account, in which case
0 1 distribution is less trivial.
Theoretically, if we plot a surface using these "flm" coefficients, we should get a close approximation to the envelope of the protein. Is that correct?
Yes, given that the "resolution" is limited by the order of harmonics and the Fibonacci grid.

Nicholas
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#3 Post by Nicholas » 2010.04.06 16:16

SaxsMax wrote:
The ".alm" files produced from CRYSOL contain binary data. Is there a reader that reads these partial amplitudes?
You may try conv_alm.exe (available on ftp)
Is this still possible? Or is there another way of reading the partial amplitudes?

Nicholas

Sebastian
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Location: University of Gothenburg

conv_alm.exe

#4 Post by Sebastian » 2010.06.01 13:17

I am also interest in reading alm files & are not able to located conv_alm.exe on the ftp server. Can someone help? Nicholas, have you figured out how to read the alm files?

Sebastian

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