New file version of .ddf file

[XiaohangJi]

Please add this file version read, thank you! It is .ddf file, Software version number: ORYX F/W v4.00 Oryx Data Collector v3.7.3
Archive.zip

[BSchilperoort]

Hi, thanks for opening this issue. I'm sorry that it took a while to reply but I have (sadly) moved on from using DTS so I can't spend much time on it at the moment.

It seems like there is an issue with the code here:

python-dts-calibration/src/dtscalibration/io/sensornet.py

Lines 389 to 402 in 7561c48

	if double_ended_flag:
	if not flip_reverse_measurements:
	# fiber length how the backward channel is aligned
	fiber_length_raw = float(meta["fibre end"])
	fiber_bw_1_index = np.abs(xraw - fiber_length_raw).argmin()
	fiber_bw_end_index = np.min(
	[xraw.size, fiber_bw_1_index + (fiber_end_index - fiber_1_index)]
	)
	fiber_bw_start_index = np.max(
	[0, fiber_bw_1_index - fiber_n_indices - fiber_n_indices_internal]
	)
	REV_ST = REV_ST[fiber_bw_start_index:fiber_bw_end_index]
	REV_AST = REV_AST[fiber_bw_start_index:fiber_bw_end_index]

It infers the fiber lengths incorrectly, making the backward channel measurements shorter than the forward temperature measurements.

I have implemented a quick solution in 3.0.1 which should resolve your loading issues. I'll leave this issue open so a proper fix can be implemented later.

[BSchilperoort]

The new version is online, you should be able to do pip install dtscalibration==3.0.2 and load in your files!