Tools to parse dumps of AIS data in comma-separated values (csv) from standard input. Both tools, seqmaker and seqdiff, print a more verbose help screen when invoked with no arguments. A short summary is given below:

• seqmaker: Gathers lines of AIS data from standard input as sequences by MMSI. Sequences of a common MMSI are split by length and if consecutive points deviate significantly. The resulting sequences are split until they have the target length. Remaining parts are discarded.
• seqdiff: Determines adjacent differences of time and position of AIS data with a common MMSI, where the data stream is read from standard input.

We use cmake as our build tool. Compile the project for example via:

$ cd ais_seqmaker/ && mkdir -p build
$ cd build/
$ cmake ..
$ make

We offer different build flags. Run a tool such as ccmake to configure them. Executables are placed in the src directory, e.g.,

$ build/src/seqmaker