Cloud Optimized GeoTiffs

While Felt can read many raster formats, storing your data as a Cloud Optimized Geotiff (COGs) allows efficient access of subsets of data for fast viewing.
This feature is only available to customers on the Enterprise plan. To upgrade, contact sales.
Configuration
Mandatory
Overview resampling
bilinear
for floating point datanearest
for integer or categorical data
Mandatory
Block size
256x256
or 512x512
Recommended
Compression scheme
YCbCr
with JPG compression for 8-bit RGB dataDEFLATE
,LZW
, orZSTD
for floating point data
Recommended*
Summary statistics
Min, max, mean and standard deviation. Stored in the header, per the GeoTIFF specification
If you upload a Cloud Optimized GeoTIFF that meets the mandatory requirements but doesn’t have summary statistics, Felt will sample the entire file to compute the values, which will add additional processing time.
Converting raster files to Cloud Optimized GeoTIFFs
Use the gdal_translate command with the
COG
output format and the-stats
flag. This will create a COG with summary stats and overviews that will be most efficiently streamed into Felt.
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