topic Creating tiles for a very long path and correct projection in ArcGIS Enterprise Questions https://community.esri.com/t5/arcgis-enterprise-questions/creating-tiles-for-a-very-long-path-and-correct/m-p/273901#M10497 <HTML><HEAD></HEAD><BODY><P>I'm pretty new to creating tiled map services, but I'm poking around a bit in ArcMap and have a question. I have a very long path that stretches diagonally across Canada for about 700 miles.&nbsp; Within maybe 50 meters of this path I would like the highest resolution maps (level 19), but progressively less as I zoom out.&nbsp; At the full extent, I suppose level 1 or 2 would suffice.&nbsp; I plan to also expose a feature service for editing simple features including the geometry of the path itself, so ultimately, these tiles will need to be available for disconnected checkout.&nbsp; Now clearly I can't build a cache for all levels 1-19 as that would be terrabytes worth of data, and of course I don't need level 19 detail 100 miles away from my path either.&nbsp; Since the path is so long it's spatial extent is huge.&nbsp; So what is the best way to accomplish this?</P><P>Also, a projection question.&nbsp; The path in question (which I have as a lat/long .gpx file) actually spans 3 UTM zones.&nbsp; About 95% of it though is in a single UTM zone. Users in the field will have a hand-held GPS and if they are standing on the path with a correct GPS fix it should show the path obviously pretty much under-foot. Positional accuracy is more important than directional accuracy.&nbsp; What is the best projection to use for this type of tiled map service?</P></BODY></HTML> Thu, 02 Oct 2014 15:03:47 GMT RiverTaig1 2014-10-02T15:03:47Z Creating tiles for a very long path and correct projection https://community.esri.com/t5/arcgis-enterprise-questions/creating-tiles-for-a-very-long-path-and-correct/m-p/273901#M10497 <HTML><HEAD></HEAD><BODY><P>I'm pretty new to creating tiled map services, but I'm poking around a bit in ArcMap and have a question. I have a very long path that stretches diagonally across Canada for about 700 miles.&nbsp; Within maybe 50 meters of this path I would like the highest resolution maps (level 19), but progressively less as I zoom out.&nbsp; At the full extent, I suppose level 1 or 2 would suffice.&nbsp; I plan to also expose a feature service for editing simple features including the geometry of the path itself, so ultimately, these tiles will need to be available for disconnected checkout.&nbsp; Now clearly I can't build a cache for all levels 1-19 as that would be terrabytes worth of data, and of course I don't need level 19 detail 100 miles away from my path either.&nbsp; Since the path is so long it's spatial extent is huge.&nbsp; So what is the best way to accomplish this?</P><P>Also, a projection question.&nbsp; The path in question (which I have as a lat/long .gpx file) actually spans 3 UTM zones.&nbsp; About 95% of it though is in a single UTM zone. Users in the field will have a hand-held GPS and if they are standing on the path with a correct GPS fix it should show the path obviously pretty much under-foot. Positional accuracy is more important than directional accuracy.&nbsp; What is the best projection to use for this type of tiled map service?</P></BODY></HTML> Thu, 02 Oct 2014 15:03:47 GMT https://community.esri.com/t5/arcgis-enterprise-questions/creating-tiles-for-a-very-long-path-and-correct/m-p/273901#M10497 RiverTaig1 2014-10-02T15:03:47Z Re: Creating tiles for a very long path and correct projection https://community.esri.com/t5/arcgis-enterprise-questions/creating-tiles-for-a-very-long-path-and-correct/m-p/273902#M10498 <HTML><HEAD></HEAD><BODY><P>I think the first part of my question can be answered <A href="http://resources.arcgis.com/en/help/main/10.1/index.html#/Map_caching_based_on_feature_boundaries/01540000044z000000/">here</A>: You don't have to have a rectangular extent as shown in this help document. I can create a polygon (a very narrow 50 meter wide 700 mile long worm looking thing) and use that. Then probably create progressively fatter worms for less detailed caches.&nbsp; The trick might be then to merge caches together. </P><P>Another good option for me I think, seems like "Caching on demand".&nbsp; My initial cache would be pretty much empty, and then I could build the cache by simply zooming in super close and slowly panning my way up the path.&nbsp; With each pan a new tile is created on the server in its cache directory so that my users will have immediate access to them.&nbsp; It might be a little slow, but provides the most control. </P></BODY></HTML> Thu, 02 Oct 2014 15:36:24 GMT https://community.esri.com/t5/arcgis-enterprise-questions/creating-tiles-for-a-very-long-path-and-correct/m-p/273902#M10498 RiverTaig1 2014-10-02T15:36:24Z