Triander: A new program for visual analysis of nucleotide sequences

The Triander program is an interactive software package for nucleotide sequence visualization. The program was developed using the freeware Pascal RAD IDE Lazarus, and its source code and binaries compiled for Windows are freely accessible at http://www.icbge.org.ua/eng/Triander . Triander can produce four types of plots. It is possible to build three DNA walks independently for each nucleotide position in triplets. The use of nucleotide vectors with unequal modulus leads to a significant reduction in the visual information lost in DNA walks. The program can be used in the investigation of the fine structure of sequences, to find standard patterns in them and to locate nontrivial regions for further detailed analysis.