intermediate readRaw

Author: TomBlock

core/src/main/java/com/bc/fiduceo/reader/windsat/WindsatReader.java

@@ -6,6 +6,7 @@
 import com.bc.fiduceo.geometry.*;
 import com.bc.fiduceo.location.PixelLocator;
 import com.bc.fiduceo.reader.AcquisitionInfo;
+import com.bc.fiduceo.reader.RawDataReader;
 import com.bc.fiduceo.reader.ReaderContext;
 import com.bc.fiduceo.reader.ReaderUtils;
 import com.bc.fiduceo.reader.netcdf.NetCDFReader;
@@ -31,6 +32,7 @@ class WindsatReader extends NetCDFReader {
     private static final String[] LOOKS = {"fore", "aft"};
     private static final String[] FREQ_BANDS = {"068", "107", "187", "238", "370"};
     private static final String[] POLARIZATIONS = {"V", "H", "P", "M", "L", "R"};
+    private final List<String> variables2D;
 
     private final GeometryFactory geometryFactory;
 
@@ -39,6 +41,11 @@ class WindsatReader extends NetCDFReader {
 
     WindsatReader(ReaderContext readerContext) {
         this.geometryFactory = readerContext.getGeometryFactory();
+        variables2D = new ArrayList<>();
+        variables2D.add("latitude");
+        variables2D.add("longitude");
+        variables2D.add("land_fraction_06");
+        variables2D.add("land_fraction_10");
     }
 
     @Override
@@ -132,18 +139,19 @@ public int[] extractYearMonthDayFromFilename(String fileName) {
 
     @Override
     public Array readRaw(int centerX, int centerY, Interval interval, String variableName) throws IOException, InvalidRangeException {
-        // detect if variable one of the multidimensional
-        // yes:
-        //   - extract layer indices from variable name
-        //   - extract NetCDF file variable name
-        //   - read from ArrayCache
-        //   - create section
-        // no:
-        //   check if 1d vector
-        //   yes:
-        //      - implement specific fill handling
-        //   no:
-        //      -read subset
+        if (variableName.equals("fractional_orbit")) {
+            // read x section and fill in y-direction
+        } else if (variables2D.contains(variableName)) {
+            final Array array = arrayCache.get(variableName);
+            final Number fillValue = arrayCache.getNumberAttributeValue(NetCDFUtils.CF_FILL_VALUE_NAME, variableName);
+            return RawDataReader.read(centerX, centerY, interval, fillValue, array, getProductSize());
+        } else {
+            //   - extract layer indices from variable name
+            //   - extract NetCDF file variable name
+            //   - read from ArrayCache
+            //   - create section
+        }
+
         throw new RuntimeException("not implmented");
     }
 

core/src/test/java/com/bc/fiduceo/reader/windsat/WindsatReader_IO_Test.java

@@ -15,6 +15,7 @@
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import ucar.ma2.Array;
 import ucar.ma2.ArrayInt;
 import ucar.ma2.DataType;
 import ucar.ma2.InvalidRangeException;
@@ -302,6 +303,22 @@ public void testGetVariables() throws IOException, InvalidRangeException {
         }
     }
 
+    @Test
+    public void testReadRaw() throws IOException, InvalidRangeException {
+        final File file = getWindsatFile();
+
+        try {
+            reader.open(file);
+
+            Array array = reader.readRaw(1328, 382, new Interval(3, 3), "land_fraction_06");
+            NCTestUtils.assertValueAt(1.0, 0, 1, array);
+            NCTestUtils.assertValueAt(0.996, 1, 1, array);
+            NCTestUtils.assertValueAt(0.9920000433921814, 2, 1, array); // rounding issues in assertion code
+        } finally {
+            reader.close();
+        }
+    }
+
     private File getWindsatFile() throws IOException {
         final String testFilePath = TestUtil.assembleFileSystemPath(new String[]{"windsat-coriolis", "v1.0", "2018", "04", "29", "RSS_WindSat_TB_L1C_r79285_20180429T174238_2018119_V08.0.nc"}, false);
         return TestUtil.getTestDataFileAsserted(testFilePath);