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<title>Basic Statistics</title>
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font-family: sans-serif;
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<h1>Basic Statistics</h1>
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The Basic Statistics module generates some simple composition
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statistics for the file analysed.
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<li>Filename: The original filename of the file which was analysed</li>
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<li>File type: Says whether the file appeared to contain actual base calls or
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colorspace data which had to be converted to base calls</li>
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<li>Encoding: Says which ASCII encoding of quality values was found in this
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</li><li>Total Sequences: A count of the total number of sequences processed.
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There are two values reported, actual and estimated. At the moment these
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will always be the same. In the future it may be possible to analyse just
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a subset of sequences and estimate the total number, to speed up the analysis,
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but since we have found that problematic sequences are not evenly distributed
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through a file we have disabled this for now.</li>
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<li>Filtered Sequences: If running in Casava mode sequences flagged to be
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filtered will be removed from all analyses. The number of such sequences
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removed will be reported here. The total sequences count above will not include
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these filtered sequences and will the number of sequences actually used for the
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rest of the analysis.</li>
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<li>Sequence Length: Provides the length of the shortest and longest sequence
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in the set. If all sequences are the same length only one value is reported.
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<li>%GC: The overall %GC of all bases in all sequences</li>
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Basic Statistics never raises a warning.
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Basic Statistics never raises an error.