.. _auto_curves_offset_by_slip:

*TRANSLATE CURVES TO REMOVE LIST*
=================================

Translates (offsets) a set of curves by detecting and removing the initial slip region using piecewise linear fitting. The worker digitizes each curve, segments it, identifies the linear pre-load (slip) zone via R² quality control, and shifts the curve so that the true load-bearing response starts at the origin.

When to use
-----------

Classification: **process**.

Tagged: ``curve_offset``, ``digitization``, ``offset``, ``piecewise_linear``, ``r2``, ``slip``, ``toe_compensation``, ``translation``.

Inputs
------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20 20 20

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curves To Be Offset
     - curvestobeoffset
     - vector
     - —
     - 
     - One or more input curves (vector format) whose slip/toe region should be detected and removed; accepts multiple curves in batch.
   * - Num Dig
     - num_dig
     - integer
     - 1000
     - 
     - Number of points used to re-digitize each curve before fitting; default 1000 — increase for high-resolution curves, decrease for speed.
   * - Segment Length Ratio
     - segment_length_ratio
     - integer
     - 0.1
     - 
     - Fraction of the total digitized points used per fitting segment when detecting the slip region (e.g. 0.1 = 10%); default 0.1.
   * - Min R2
     - r2_limit
     - integer
     - 0.95
     - 
     - Minimum R² threshold for a segment to be accepted as linear (slip); default 0.95 — raise for stricter linearity, lower for noisier data.
   * - Merge Ratio
     - merge_ratio
     - integer
     - 0.025
     - 
     - Adjacent slope segments are merged if their slopes differ by less than this ratio; default 0.025 — controls how aggressively nearly-equal slope segments are combined.

Outputs
-------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20

   * - Label
     - ID
     - Type
     - Description
   * - curves_offset_by_slip_output_1
     - curves_offset_by_slip_output_1
     - vector
     - Slip-corrected output curves (vector format), translated along the x-axis so that the toe/slip region is removed and the response origin is at zero.

Disciplines
-----------

- data.curve.transform

Runnable example
----------------

A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: `/api/workflow/example?id=curves_offset_by_slip <https://www.d3view.com/api/workflow/example?id=curves_offset_by_slip>`_

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>curves_offset_by_slip</code>. Schema hash: <code>661e757c640e</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>