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InterpolatorTest.java
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InterpolatorTest.java
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package tech.tablesaw.interpolation;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import org.junit.jupiter.api.Test;
import tech.tablesaw.api.DoubleColumn;
import tech.tablesaw.columns.numbers.DoubleColumnType;
public class InterpolatorTest {
private static final double missing = DoubleColumnType.missingValueIndicator();
@Test
public void testFrontfill() {
DoubleColumn col =
(DoubleColumn)
DoubleColumn.create(
"testCol",
new double[] {missing, missing, 0.181, 0.186, missing, missing, 0.181})
.interpolate()
.frontfill();
assertArrayEquals(
new double[] {missing, missing, 0.181, 0.186, 0.186, 0.186, 0.181}, col.asDoubleArray());
}
@Test
public void testBackfill() {
DoubleColumn col =
(DoubleColumn)
DoubleColumn.create(
"testCol",
new double[] {missing, missing, 0.181, 0.186, missing, 0.181, missing})
.interpolate()
.backfill();
assertArrayEquals(
new double[] {0.181, 0.181, 0.181, 0.186, 0.181, 0.181, missing}, col.asDoubleArray());
}
}