Matt Amos
Matt Amos
* **What did you see?** In tile `13/4146/2816`:  In tile `14/8293/5633`:  Note that the highlighted building...
A lot of the time, it's not possible to have a "static" hierarchy (e.g: all parks draw on top of all forests) between landuse polygons. Instead, we can use their...
From the USGS NED site: > 1-meter – This dataset was introduced in 2015 with limited coverage of the U.S., > but will be expanding as new DEMs from 3DEP...
At the moment 1 job = 1 message in the queue. This leads to situations where jobs can download a lot of data just to do a single output tile,...
 That's tile `terrarium/7/33/44`, but the effect is visible at zooms 6 & 7, but fixed at 8. This seems to suggest a problem with one of the data sources...
The current design downloads and unpacks data sources before uploading them, usually uncompressed, to the `source_store`. On one hand, this saves re-processing effort when a data source tile is used...
The current design assumes that bounding boxes for each raster tile can be determined without downloading the tile - usually from coordinates embedded in the tile name. This is mostly...
Larger machines will have spare RAM (looks like at least 4GB spare on the dev cluster machines). Using that for cache can only help.
Files at rest in the store can/should be compressed. At the moment, the SRTM and NED files are large and not compressed, which means they can be slow to download....
We have the following problem near the coast:  In this example, the red data is something like GMTED or SRTM for which we have no bathymetry, and the...