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Biostrings basic access
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| ds <- DNAString("GCAAAGT-TT-C") | |
| length(ds) | |
| # [1] 12 | |
| ds[1:3] | |
| # 3-letter "DNAString" instance | |
| #seq: GCA | |
| ds[3:1] | |
| # 3-letter "DNAString" instance | |
| #seq: ACG | |
| alphabetFrequency(ds) | |
| #A C G T M R W S Y K V H D B N - + . | |
| #3 2 2 3 0 0 0 0 0 0 0 0 0 0 0 2 0 0 | |
| head(trinucleotideFrequency(ds)) | |
| #AAA AAC AAG AAT ACA ACC | |
| # 1 0 1 0 0 0 |
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