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Eigen Documentation

The Legacy Historian Module

The Historian module provides a legacy, single-historian JSON Bridge client. This module is deprecated in favor of Historian Multi, and will be removed in a future release.

Key Entry Point

Section titled “Key Entry Point”

Use get_historian() to create a client:

from eigeningenuity import get_historian, EigenServer


ei = EigenServer("https://demo.eigen.co/")
h = get_historian("Demo-influxdb", ei)

Common Operations

Section titled “Common Operations”

Current Values

Section titled “Current Values”
values = h.getCurrentDataPoints("DEMO_02TI301.PV")

Interpolated Range

Section titled “Interpolated Range”
range_points = h.getInterpolatedRange(
    "DEMO_02TI301.PV",
    "01/01/2024 00:00:00",
    "01/01/2024 12:00:00",
    100,
)

Output Formats

Section titled “Output Formats”

Most calls support:

  • json (default)
  • df (pandas DataFrame)
  • raw (full API response)

Authentication

Section titled “Authentication”

For secured environments, configure Azure auth before creating the client. See Authentication.