==============
``norm_chart``
==============

.. image:: img/smaller/norm-chart.png

.. versionadded:: 1.3.0

**Description**

"Curve vs norm" style chart. Suitable for situations, when you want to
compare some data with expected value ("norm") or put an emphasis on y-axis
values.

**Content**

::

    "data" = {
        "title": "<title>",
        "description": "<description>",
        "plot_data": [ [<series1>], [<series2>], [<series3>], ... ]
    }

where:

.. describe:: title, description

   Title and description (subtitle) for the tile.

.. describe:: plot_data

    Data for charts in a form of list of series, where each series designates
    single chart; each element of a given series is a pair ``[x_axis_value,
    y_axis_value]``.

Example::

  curl http://localhost:7272/api/v0.1/<api_key>/push
       -X POST
       -d "tile=norm_chart"
       -d "key=<tile_id>"
       -d 'data={"title": "My title",
                 "description": "Some description",
                 "plot_data": [[[1, 2], [3, 5.12], [5, 13.1], [7, 33.6], [9, 85.9], [11, 219.9]],
                               [[6, 2], [3, 5.12], [5, 13.1], [7, 33.6], [9, 85.9], [11, 219.9]]]}'

**Configuration**

::

  value = {
      "easyNorms": [["<color>", <y-value>, <line_width>], ...]
  }

where:

.. describe:: easyNorms

   List of norms to be displayed. Each norm consists of three elements:

   .. describe:: color

      Color which given norm should use - in a hexadecimal form or color name
      (e.g.  ``#94C140`` or ``green``).

   .. describe:: y-value

      Value for the norm.

   .. describe:: line_width

      Line thickness for the norm (in pixels).

Example::

    curl http://localhost:7272/api/v0.1/<api_key>/tileconfig/<tile_id>
         -X POST
         -d 'value={"easyNorms": [["yellow", 200, 2], ["green", 100, 2]]}'