JSON Input and Output

[daleroberts]

Adds JSON Lines (JSONL) input and output support for DynAdjust data.

It uses the JSONL format which is a variation on JSON that uses one object per line, so it is streamable, diffable, and easier to process with standard tools than XML.

Key points:

• Adds JSONL import support to dnaimport.
• Adds --output-json to dnaadjust to emit JSONL report sidecars.
• Provides resources/xml2jsonl.py for converting existing DynaML XML files to JSONL.
• Supports stations, scalar measurements, direction sets, GNSS baselines, GNSS point clusters, covariance arrays, reference-frame metadata, ignore flags, and observation epochs.
• Ensures adjustment JSONL output uses the same measurement grammar accepted by the JSONL parser, including grouped direction sets and GNSS clusters.
• Adds parser and printer tests covering JSONL import, output validity, and round-trip-sensitive cases.

How To Use

Import JSONL directly with dnaimport:

  dnaimport -n gnss_jsonl sampleData/gnss-networkstn.jsonl sampleData/gnss-networkmsr.jsonl -r GDA2020 --flag-unused-stations

Convert existing DynaML XML to JSONL:

  resources/xml2jsonl.py stations.xml measurements.xml

or write to a specific file:

  resources/xml2jsonl.py stations.xml measurements.xml -o network.jsonl

Enable JSONL output from adjustment runs with --output-json:

  dnaadjust -n <network-name> --output-json

This keeps the existing text reports and also writes JSONL siblings, for example:

  <network>.adj.jsonl
  <network>.xyz.jsonl
  <network>.apu.jsonl   # when positional uncertainty output is enabled
  <network>.cor.jsonl   # when station correction output is enabled
  <network>.m2s.jsonl   # when measurement-to-station output is enabled