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, 12:31, 20 January 2016
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| == BCF Compression vs Compression Time == | | == BCF Compression vs Compression Time == |
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− | The zlib deflation algorithm (a variant of LZ77) has 10 levels - 0 to 9. 0 has no compression but instead wraps up the file in zlib or bgzf blocks. | + | The zlib deflation algorithm (a variant of LZ77) has 10 levels - 0 to 9. 0 has no compression but instead wraps <br> |
− | Levels 1-9 denote an increasing compression level in exchange for longer times for compression. | + | up the file in zlib or bgzf blocks. It may be useful to have 0 compression as it is indexable with the same mechanism <br> |
| + | used for compressed files. Levels 1-9 denote an increasing compression level in exchange for longer times for <br> |
| + | compression. |
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− | In general, zlib compression does not have significant difference in compression between the 9 compression levels as shown in the following table: | + | In general, zlib compression does not have significant differences in compression between the 9 compression levels as <br> |
| + | shown in the following table: |
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| {| class="wikitable" | | {| class="wikitable" |