Description of the problem

When using the phase_closure unwrapping error correction method, the default connCompMinArea value is not passed to the connected component labeling function. It always uses the default (2.5e3), which can lead to unexpected results or an error indicating that the reference point is not included in the connected components:

I have identified where the connCompMinArea is dropped and I am in the process of creating a PR to address the issue

Full script that generated the error

To duplicate the error, order an INSAR_ISCE_BURST SBAS stack from ASF HyP3. Use the phase_closure unwrapping error correction method and set connCompMinArea <= 500. Then run the smallBaselineApp, and include the correct_unwrap_error step. This is not an issue for the bridging method.

Full error message

I didn't copy the error message text, but it is in the screenshot above.

System information

• Operating system: Linux
• Python environment: conda+pip
• MintPy version: 1.6.1 (also confirmed issue in unreleased code on main branch, 2025-03-28)
• InSAR processor/product: isce2
• Your custom / default template file (if the bug is related to a specific dataset):
  • mintpy.compute.cluster = local
    mintpy.compute.numWorker = 4
    mintpy.load.processor = hyp3
    mintpy.load.unwFile = /home/jovyan/063_133407_IW1//_unw_phase*.tif
    mintpy.load.corFile = /home/jovyan/063_133407_IW1//_corr*.tif
    mintpy.load.connCompFile = /home/jovyan/063_133407_IW1//_conncomp*.tif
    mintpy.load.demFile = /home/jovyan/063_133407_IW1//_dem*.tif
    mintpy.load.incAngleFile = /home/jovyan/063_133407_IW1//_lv_theta*.tif
    mintpy.load.azAngleFile = /home/jovyan/063_133407_IW1//_lv_phi*.tif
    mintpy.load.waterMaskFile = /home/jovyan/063_133407_IW1//_water_mask*.tif
    mintpy.unwrapError.method = phase_closure
    mintpy.unwrapError.connCompMinArea = 500
    mintpy.troposphericDelay.method = no
    mintpy.reference.date = no