ais_generalize.c File Reference

A program that reads AIS data from the file ais_trips_longest.csv containing the temporal values for trip and SOG for the longest 10 trips of ships extracted from one day of observations (aisdk-2025-03-01.csv) provided by the Danish Maritime Authority in https://web.ais.dk/aisdata/, and outputs the size in KB and number of instants for various simplification algorithms. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <meos.h>
#include <meos_geo.h>
#include <meos_internal.h>

Data Structures
struct	trip_record

Macros
#define	MAX_LEN_LINE   2000001
#define	MAX_NUM_SHIPS   10

Functions
int	main (void)

Detailed Description

A program that reads AIS data from the file ais_trips_longest.csv containing the temporal values for trip and SOG for the longest 10 trips of ships extracted from one day of observations (aisdk-2025-03-01.csv) provided by the Danish Maritime Authority in https://web.ais.dk/aisdata/, and outputs the size in KB and number of instants for various simplification algorithms.

Please notice that the SQL script generate_ais_trips_longest.sql in the data directory was used to generate the CSV file above.

The program can be build as follows

gcc -Wall -g -I/usr/local/include -o ais_generalize ais_generalize.c -L/usr/local/lib -lmeos