Viewers

A number of online previewers are available:

• BT1 browser specifically for data taken by the BT1 instrument - not useful for any other instrument
• Database search find files by date, comment, filename, etc.
• Experiment browser for instruments running NICE and DCS and HFBS, a searchable and sortable index of experiments by user, experiment ID, title, etc.
• ICP browser for data from SPINS, BT4, and old data from reflectometers
• BT7 browser, which actually plots column-format data from BT7, MACS, PHADES, etc.
• HDF5 viewer, which allows inspection of Nexus HDF5 data from any instrument that writes those (NICE instruments)
• nexus-zip viewer, which allows inspection of Nexus-ZIP format data from any instrument that writes those (NICE instruments)

Helpers

API endpoints are provided for retrieving JSON data from the database about files:

• https://ncnr.nist.gov/ncnrdata/findRxCycle.php
  • optional parameter: timestamp, e.g. https://ncnr.nist.gov/ncnrdata/findRxCycle.php?timestamp=1321321231
  • returns rxcycle that matches current timestamp, or provided timestamp
• https://ncnr.nist.gov/ncnrdata/listRxCycles.php
  • optional parameters: start_timestamp, end_timestamp
  • returns list of all rxcycles (name, start_date and end_date) that fall within start_timestamp and end_timestamp
• https://ncnr.nist.gov/ncnrdata/listftpfiles.php
  • required paramter: pathlist[] e.g. ["cgd", "201809", "21237", "data"], defaults to [""]
  • accepts POST or GET
  • returns file and directory metadata for the provided pathlist, including
    • a list of subdirectories
    • (filename, last modified time, sha256) for all data files in pathlist