		int numberOfRecord = 1000000;

		StructureDataset ds = reader.read(path, numberOfRecord);

		MinMaxProcess process = new MinMaxProcess(POWER_CONSUMPTION.Sub_metering_1);

		ds.stream().process(process).start();

		float[] minmax = process.getMinMaxs()[0];

		ByteBuffer tmpBuffer = GLBufferFactory.allocate(ds.getSize() * Float.BYTES);
		FloatBuffer floatbuffervalues = tmpBuffer.asFloatBuffer();
