i've been working with google earth for a while now in my spare time, using it for marking all the places i explore (caves and mines, hiking trails etc.). i have a problem though - i need to organize the kml file somehow into layers and break it up spatially, because it's getting too huge - over 5000 placemarks and growing. are there any tools for doing this? commandline tools would be preferred.
for example: move all the placemarks within a specific polygon to a specific folder move all the placemarks whose name/description contains a specific substring move all the placemarks which are within a certain distance of any line in one folder to another folder
i'm working on some c++ code (using tinyxml) to do these operations on the kml file, but i was wondering if there's already existing tools for this.