Schema / Query Example

create extent Instrument(...);

create extent CloudCover (cloudDensity Raster, measuringDevice ref Instrument, date Date);

create extent Cities (boundary Polygon, name String);

select name, cloudDensity.clip(boundary)from Cities, CloudCoverwhere boundary.area() > 900 and date = “9/15/94” and cloudDensity.clip(boundary).avg() > 10;

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