On Mon, Dec 10, 2012 at 11:18 AM, Tom Hayward <[email protected]> wrote: > On Mon, Dec 10, 2012 at 9:22 AM, Fred Hillhouse <[email protected]> > wrote: >> >> There are other "slippy tile" maps available. I use a series from ArcGIS >> that is basically the same as the USGS topographic maps. CalTopo also has >> a >> few useful tiles as well. > > > I have created .geo files for using CalTopo tiles in Xastir. They work fine, > but the OSM license is still in the corner (I think Xastir's code puts this > over all tiles). > > Speaking of licenses, please make sure you are using the CalTopo tiles > appropriately. Matt puts a lot of time and money into creating and serving > those. He charges a license fee for use outside of caltopo.com.
I have asked Matt for clarification of the usage agreement for CalTopo tiles. Here's what he said: On Wed, Dec 12, 2012 at 10:29 AM, Matt Jacobs <[email protected]> wrote: > > For users adding things as a one-off, I don't need anything special. For > them to be included as the default, I need: > > * Some form of attribution. > > * A sensible user-agent (for apps) or referring URL (for websites) when > fetching tiles. I turn on logging a couple days a month - too expensive to > do it constantly - and have scripts that compute bandwidth by user-agent, > referrer, etc. > > * For web sites, a point of contact so that I can occasionally send out > URL updates. I tell browsers to cache the tiles for a long time, so if I > make intrusive changes I'll update a dummy parameter (currently v=1) to > invalidate existing caches. Having everyone in sync on this helps my > bandwidth and gives a better user experience. > > * For apps, it should be hard for users to prefetch bazillions of tiles > unless the developer wants to pay me. I'm going to work on adding CalTopo tiles to Xastir. They work as-is with the OSM code, but they are attributed to OSM :-) I'm planning to rewrite some of the OSM code so that we can specify an attribution in the .geo file, and also ensure that Xastir is sending an appropriate user-agent and that Matt has that user-agent on file. Tom KD7LXL _______________________________________________ Xastir mailing list [email protected] http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
