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 Results for DC.creator="K." AND DC.creator="Cowtan" in section 15.3.5 of volume F
Code description
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5, pp. 410-412 [ doi:10.1107/97809553602060000849 ]
... by fitting the data to a semi-empirical scattering curve (Cowtan & Main, 1998). This curve is prepared using Parseval's ... is calculated, it may be used with very poor maps (Cowtan & Main, 1998). The method is easily extended to include ... map to obtain the density value at an arbitrary coordinate (Cowtan & Main, 1998). This approach gives very accurate interpolation ...

Averaging
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.6, pp. 411-412 [ doi:10.1107/97809553602060000849 ]
... map to obtain the density value at an arbitrary coordinate (Cowtan & Main, 1998). This approach gives very accurate interpolation from ... provides gradient information for the refinement of averaging operators. References Cowtan, K. D. & Main, P. (1998). Miscellaneous algorithms for density ...

Histogram matching
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.5, p. 411 [ doi:10.1107/97809553602060000849 ]
... histograms on either side of the current resolution. References Zhang, K. Y. J. & Main, P. (1990a). Histogram matching as a ...

Fourier transforms
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.4, p. 411 [ doi:10.1107/97809553602060000849 ]
Fourier transforms 15.3.5.4. Fourier transforms For simplicity of coding, all Fourier transforms are performed in core using real-to-Hermitian and Hermitian-to-real fast Fourier transforms (FFTs). The data are expanded to space group P1 before calculating a map and averaged back to a reciprocal asymmetric unit after inverse ...

Averaging-mask determination
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.3, p. 411 [ doi:10.1107/97809553602060000849 ]
... is calculated, it may be used with very poor maps (Cowtan & Main, 1998). The method is easily extended to include information from multiple averaging operators. References Cowtan, K. D. & Main, P. (1998). Miscellaneous algorithms for density ...

Solvent-mask determination
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.2, p. 411 [ doi:10.1107/97809553602060000849 ]
Solvent-mask determination 15.3.5.2. Solvent-mask determination If the user does not supply a solvent mask, the solvent mask is calculated by Wang's (1985) method, using the reciprocal-space approach of Leslie (1987). A number of variants on this algorithm are implemented; however, the parameter that affects the quality ...

Scaling
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.1, pp. 410-411 [ doi:10.1107/97809553602060000849 ]
... by fitting the data to a semi-empirical scattering curve (Cowtan & Main, 1998). This curve is prepared using Parseval's ... the true solvent content, as discussed in Section 15.3.3. References Cowtan, K. D. & Main, P. (1998). Miscellaneous algorithms for density ...

Multi-crystal averaging
Cowtan, K. D., Zhang, K. Y. J. and Main, P.  International Tables for Crystallography (2012). Vol. F, Section 15.3.5.7, p. 412 [ doi:10.1107/97809553602060000849 ]
Multi-crystal averaging 15.3.5.7. Multi-crystal averaging The multi-crystal averaging calculation in DMMULTI is equivalent to several single-crystal averaging calculations running simultaneously, with the exception that during the averaging step, the molecule density is averaged across every copy in every crystal form. This average is weighted by the mean ...

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