Basic analysis
The basic analysis section assesses the most simple characteristics that are supported by all sequencing technologies.- Sequence length distribution
- Calculates absolute amounts of sequences that have been observed for individual sequence lengths in base-pairs. The resulting table correlates sequence-lengths in base-pairs with numbers of sequences observed with that number of base-pairs.
- Base coverage distribution
- Calculates absolute coverages for individual base positions, which is obviously very similar to the sequence length distribution. The resulting table correlates base-positions with the number of sequences that supported (covered) that position.
- Sequence-wise %GC-content distribution
- Calculates absolute amounts of sequences that feature individual %GC-contents in 101 bins ranging from 0 to 100%.The %GC-content of a sequence is calculated by dividing the absolute number of G/C-nulceotides by the length of that sequence.
- Sequence-wise %N-content distribution
- Calculates the absolute amount of sequences that feature individual %N-contents in 101 bins ranging from 0 to 100%, where N refers to all ambiguous base-codes as specified by IUPAC.The %N-content of a sequence is calculated by dividing the absolute number of ambiguous nucleotides through the length of that sequence.
- Base-wise nucleotide distributions
- Calculates absolute coverages for the four DNA nucleotides (A, C, G or T) throughout the individual base-positions.
- Base-wise GC-distribution
- Calculates absolute coverages of C's + G's throughout individual base-positions
- Base-wise N-distribution
- Calculates absolute coverages of N's, throughout individual base-positions, where N refers to all ambiguous base-codes as specified by IUPAC.