# Calculate number of roads/lines a line crosses

by Rich2020
Tags: crosses, line, number, roads or lines
 P: 4 Hi guys, I have a really tricky problem here and I'm hoping that there is a math guru here who can help. The problem Using Google maps, I need to allow a user to draw a line. This line can be in any direction and basically, I need to determine if the user has drawn the line over a road and if so, how many. Below is an example: The image doesn't seem to be showing so here is the link: View image: map basic With Google Directions service, I am able to get the nearest road of the dropped marker (markers indicated by arrow in image). For a single road, I believe that I can do this with Pythagoras, but for multiple roads by brain starts to boil. If anyone here could help, I'd really appreciate it. I appreciate it is pretty tough so I'm open to all suggestions. Thanks!
 PF Gold P: 1,463 I really don't understand what you want to do. Do you want to calculate he number of roads the line is intersecting?
P: 4
 Quote by adjacent I really don't understand what you want to do. Do you want to calculate he number of roads the line is intersecting?
Yes, exactly that :)

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