crossing

crosspath takes a trajectory file(s) as generated by inspect and output the latitude and longitude when there are a crossing with the specified area(s).

crosspath accepts options given via the command line but also via configuration file. When this option is choosen, the file given as argument is considered to be one valid configuration file. When not used, crosspath considers its arguments as one to multiple trajectory files.

the main advantage of using a configuration with crosspath is the ability to specify multiple areas of interest.

the output of crosspath consists of multiple columns:

• label as given via the label option
• entry time
• entry latitude
• entry longitude
• exit time
• exit latitude
• exit longitude
• approximative crossing duration
• approximative crossing distance

notes that the entry time, latitude and longitude are taken from the first position of the satellite after entering the area. the time, latitude and longitude are taken from the last point before exiting the area.

options:

starts DATE only take crossing of area occuring after DATE ends DATE only take crossing of area occuring before DATE label LABEL an optional label to the area margin MARGIN size of the area of interest around the center lat LAT latitude used as the center of the area of interest lng LNG longitude used as the center of the area of interest night only take crossing of area occuring during an eclipse csv output crossing as comma separated value config use a configuration file to specify the area(s) of interest version print the version of crosspath and exit help print this help message and exit

usages:

$ crosspath [-starts] [-ends] [-margin] [-label] [-lat] [-lng] [-night] [-csv] 
$ crosspath -config 
$ crosspath -version
$ crosspath -help