/
MinSpec.scala
92 lines (74 loc) · 2.38 KB
/
MinSpec.scala
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/*
* Copyright 2016 Azavea
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package geotrellis.spark.mapalgebra.local
import geotrellis.spark._
import geotrellis.spark.io.hadoop._
import geotrellis.spark.TileLayerRDD
import geotrellis.spark.testkit.testfiles._
import geotrellis.raster.Tile
import geotrellis.spark.testkit._
import org.scalatest.FunSpec
class MinSpec extends FunSpec with TestEnvironment with TestFiles {
describe("Min Operation") {
val inc = IncreasingTestFile
val dec = DecreasingTestFile
val hundreds = AllHundredsTestFile
it("should min a raster with an integer") {
val thresh = 721.1
val res = inc.localMin(thresh)
rasterShouldBeAbout(
res,
(tile: Tile, x: Int, y: Int) => math.min(y * tile.cols + x, thresh),
1e-3
)
rastersShouldHaveSameIdsAndTileCount(inc, res)
}
it("should min a raster with a double") {
val thresh = 873.4
val res = inc.localMin(thresh)
rasterShouldBeAbout(
res,
(t: Tile, x: Int, y: Int) => math.min(y * t.cols + x, thresh),
1e-3
)
rastersShouldHaveSameIdsAndTileCount(inc, res)
}
it("should min two rasters") {
val res = inc.localMin(dec)
rasterShouldBe(
res,
(t: Tile, x: Int, y: Int) => {
val decV = t.cols * t.rows - (y * t.cols + x) - 1
val incV = y * t.cols + x
math.min(decV, incV)
}
)
rastersShouldHaveSameIdsAndTileCount(inc, res)
}
it("should min three rasters as a seq") {
val res = inc.localMin(Seq(dec, hundreds))
rasterShouldBe(
res,
(t: Tile, x: Int, y: Int) => {
val decV = t.cols * t.rows - (y * t.cols + x) - 1
val incV = y * t.cols + x
math.min(math.min(decV, incV), 100)
}
)
rastersShouldHaveSameIdsAndTileCount(inc, res)
}
}
}