/
IfCellSpec.scala
134 lines (100 loc) · 3.88 KB
/
IfCellSpec.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.store.hadoop._
import geotrellis.spark.TileLayerRDD
import geotrellis.spark.testkit.testfiles._
import geotrellis.spark.testkit._
import org.scalatest.FunSpec
class IfCellSpec extends FunSpec with TestEnvironment with TestFiles {
describe("IfCell Operation") {
val inc = IncreasingTestFile
val dec = DecreasingTestFile
val (cols: Int, rows: Int, tots: Int) = {
val tile = inc.stitch
(tile.cols, tile.rows, tile.cols * tile.rows - 1)
}
it("should change values mod 2 to 1, testing integer method") {
val res = inc.localIf((a: Int) => a % 2 == 0, 1)
rasterShouldBe(
res,
(x: Int, y: Int) => if ((y * cols + x) % 2 == 0) 1 else y * cols + x
)
rastersShouldHaveSameIdsAndTileCount(res, inc)
}
it("should change values mod 2 to 1 else 0, testing integer method") {
val res = inc.localIf((a: Int) => a % 2 == 0, 1, 0)
rasterShouldBe(
res,
(x: Int, y: Int) => if ((y * cols + x) % 2 == 0) 1 else 0
)
rastersShouldHaveSameIdsAndTileCount(res, inc)
}
it("should change values mod 2 to 1, testing double method") {
val res = inc.localIf((a: Double) => a % 2 == 0, 1)
rasterShouldBe(
res,
(x: Int, y: Int) => if ((y * cols + x) % 2 == 0) 1 else y * cols + x
)
rastersShouldHaveSameIdsAndTileCount(res, inc)
}
it("should change values mod 2 to 1 else 0, testing double method") {
val res = inc.localIf((a: Double) => a % 2 == 0, 1, 0)
rasterShouldBe(
res,
(x: Int, y: Int) => if ((y * cols + x) % 2 == 0) 1 else 0
)
rastersShouldHaveSameIdsAndTileCount(res, inc)
}
it("should if 2 values in 2 rasters are math.abs(diff) <= 1 set to 0 integer method") {
val thres = tots / 2.0
val res = inc.localIf(dec, (a: Int, b: Int) => math.abs(a - b) <= 1, 0)
rasterShouldBe(
res,
(x: Int, y: Int) => if (math.abs((y * cols + x) - thres) <= 1) 0 else y * cols + x
)
rastersShouldHaveSameIdsAndTileCount(res, inc)
}
it("should if 2 values in 2 rasters are math.abs(diff) <= 1 set to 0 else 1 integer method") {
val thres = tots / 2.0
val res = inc.localIf(dec, (a: Int, b: Int) => math.abs(a - b) <= 1, 0, 0)
rasterShouldBe(
res,
(x: Int, y: Int) => if (math.abs((y * cols + x) - thres) <= 1) 0 else 0
)
rastersShouldHaveSameIdsAndTileCount(res, inc)
}
it("should if 2 values in 2 rasters are math.abs(diff) <= 1 set to 0 double method") {
val thres = tots / 2.0
val res = inc.localIf(dec, (a: Double, b: Double) => math.abs(a - b) <= 1, 0)
rasterShouldBe(
res,
(x: Int, y: Int) => if (math.abs((y * cols + x) - thres) <= 1) 0 else y * cols + x
)
rastersShouldHaveSameIdsAndTileCount(res, inc)
}
it("should if 2 values in 2 rasters are math.abs(diff) <= 1 set to 0 else 1 double method") {
val thres = tots / 2.0
val res = inc.localIf(dec, (a: Double, b: Double) => math.abs(a - b) <= 1, 0, 0)
rasterShouldBe(
res,
(x: Int, y: Int) => if (math.abs((y * cols + x) - thres) <= 1) 0 else 0
)
rastersShouldHaveSameIdsAndTileCount(res, inc)
}
}
}