furqaankhan commented on code in PR #1150:
URL: https://github.com/apache/sedona/pull/1150#discussion_r1433006274
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spark/common/src/test/scala/org/apache/sedona/sql/rasteralgebraTest.scala:
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@@ -1296,6 +1296,58 @@ class rasteralgebraTest extends TestBaseScala with
BeforeAndAfter with GivenWhen
assertEquals("UNSIGNED_8BITS", result)
}
+ it("Passed RS_MapAlgebra with two raster columns") {
+ val df1 = sparkSession.read.format("binaryFile")
+ .option("recursiveFileLookup", "true")
+ .option("pathGlobFilter", "*.tif*")
+ .load(resourceFolder + "raster")
+ .selectExpr("path", "RS_FromGeoTiff(content) as rast0")
+ val df2 = sparkSession.read.format("binaryFile")
+ .option("recursiveFileLookup", "true")
+ .option("pathGlobFilter", "*.tif*")
+ .load(resourceFolder + "raster")
+ .selectExpr("path", "RS_FromGeoTiff(content) as rast1")
+ .withColumnRenamed("path", "path1")
+ val df = df1.join(df2, df1("path") === df2("path1"),
"inner").select("rast0", "rast1", "path")
+ Seq(null, "b", "s", "i", "f", "d").foreach { pixelType =>
+ val pixelTypeExpr = if (pixelType == null) null else s"'$pixelType'"
+ val dfResult = df.withColumn("rast_2", expr(s"RS_MapAlgebra(rast0,
rast1, $pixelTypeExpr, 'out[0] = rast0[0] * 0.5 + rast1[0] * 0.5;', null)"))
Review Comment:
Yes, and it doesn't matter as we are return a single band raster.
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