sourceProduct = ProductIO.readProduct(sys.argv[1])
b1 = sourceProduct.getBand('reflec_5')
b2 = sourceProduct.getBand('reflec_7')
b3 = sourceProduct.getBand('reflec_9')
w1 = b1.getSpectralWavelength()
w2 = b2.getSpectralWavelength()
w3 = b3.getSpectralWavelength()
a = (w2 - w1) / (w3 - w1)
k = 1.03
width = sourceProduct.getSceneRasterWidth()
height = sourceProduct.getSceneRasterHeight()
targetName = 'FLH_Product'
targetProduct = Product.newProduct(targetName, 'test', width, height)
targetBand = targetProduct.addNewBand('FLH', ProductData.TYPE_FLOAT32)
ProductUtils.copyGeoCoding(sourceProduct, targetProduct)
targetProduct.setProductWriter(ProductIO.getProductWriter('GeoTIFF'))
targetProduct.writeHeader(String.newString(targetName + '.tif'))
r1 = numpy.zeros(width, dtype=numpy.float32)
r2 = numpy.zeros(width, dtype=numpy.float32)
r3 = numpy.zeros(width, dtype=numpy.float32)
for y in range(height):
b1.readPixelsFloat(0, y, width, 1, r1)
b2.readPixelsFloat(0, y, width, 1, r2)
b2.readPixelsFloat(0, y, width, 1, r3)
print("processing line ", y, " of ", height)
FLH = r2 – k * (r1 + a * (r3 – r1))
targetBand.writePixelsFloat(0, y, width, 1, FLH)
height = product.getSceneRasterHeight()
name = product.getName()
description = product.getDescription()
band_names = product.getBandNames()
print("Product: %s, %d x %d pixels, %s" % (name, width, height, description))
print("Bands: %s" % (band_names))
b7 = product.getBand('radiance_7')
b10 = product.getBand('radiance_10')
ndviProduct = Product.newProduct('NDVI', 'NDVI', width, height)
ndviBand = ndviProduct.addNewBand('ndvi', ProductData.TYPE_FLOAT32)
ndviFlagsBand = ndviProduct.addNewBand('ndvi_flags', ProductData.TYPE_UINT8)
writer = ProductIO.getProductWriter('BEAM-DIMAP')
ProductUtils.copyGeoCoding(product, ndviProduct)
ndviFlagCoding = FlagCoding.newFlagCoding('ndvi_flags')
ndviFlagCoding.addFlag("NDVI_LOW", 1, "NDVI below 0")
ndviFlagCoding.addFlag("NDVI_HIGH", 2, "NDVI above 1")
ndviProduct.getFlagCodingGroup().add(ndviFlagCoding)
ndviFlagsBand.setSampleCoding(ndviFlagCoding)
ndviProduct.setProductWriter(writer)
ndviProduct.writeHeader(String.newString('ndvi.dim'))
r7 = numpy.zeros(width, dtype=numpy.float32)
r10 = numpy.zeros(width, dtype=numpy.float32)
for y in range(height):
desc = product.getDescription()
band_names = product.getBandNames()
print("Product: %s, %d x %d pixels, %s" % (name, width, height, desc))
print("Bands: %s" % (band_names))
b7 = product.getBand('radiance_7')
b10 = product.getBand('radiance_10')
ndviProduct = Product.newProduct('NDVI', 'NDVI', width, height)
ndviBand = ndviProduct.addNewBand('ndvi', ProductData.TYPE_FLOAT32)
ndviBand.setNoDataValue(numpy.nan)
ndviBand.setNoDataValueUsed(True)
writer = ProductIO.getProductWriter('BEAM-DIMAP')
ProductUtils.copyGeoCoding(product, ndviProduct)
ndviProduct.setProductWriter(writer)
ndviProduct.writeHeader(String.newString('ndvi.dim'))
r7 = numpy.zeros(width, dtype=numpy.float32)
r10 = numpy.zeros(width, dtype=numpy.float32)
v7 = numpy.zeros(width, dtype=numpy.uint8)
v10 = numpy.zeros(width, dtype=numpy.uint8)
for y in range(height):
b7.readPixelsFloat(0, y, width, 1, r7)
b10.readPixelsFloat(0, y, width, 1, r10)
b7.readValidMask(0, y, width, 1, v7)
