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GeoTrellis is an open source geographic data processing engine for high performance applications.

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package geotrellis.spark

import geotrellis.proj4.CRS
import geotrellis.spark.tiling.LayoutScheme

package object etl {
  private [etl] def requireKeys(name: String, props: Map[String, String], keys: Seq[String]) = {
    val missing = keys
      .filterNot(props.contains)
      .mkString(", ")
    require(missing.isEmpty, s"$name module missing required settings: $missing")
  }

  type LayoutSchemeProvider = (CRS, Int) => LayoutScheme
}