Curves loader

The curves loader is used to load pre-calibrated curves into the system. It is one of a number of loaders included in Strata.


Curves can be loaded using the RatesCurvesCsvLoader

ResourceLocator groupsLocator = ResourceLocator.ofFile(groupsFilename);
ResourceLocator settingsLocator = ResourceLocator.ofFile(settingsFilename);
ResourceLocator curvesLocator = ResourceLocator.ofFile(curvesFilename);
List<CurveGroup> curves = RatesCurvesCsvLoader.load(
    valuationDate, groupsLocator, settingsLocator, ImmutableList.of(curvesLocator));

Curves must be loaded as part of a group, that specifies a purpose for the curve, such as whether it is a discount or forward curve. See the curve groups file for more details.

Settings that are shared across all the nodes in a curve are defined in the curve settings file.


The curves file is a simple CSV-formatted file with the following header row:

Valuation Date,Curve Name,Date,Value,Label

The columns may be specified in any order, however this is the recommended order. The meaning of each column is as follows:

Column name Description
Valuation Date The valuation date that the curve was calibrated for, see accepted formats
Curve Name The name of the curve
Date The date of the curve node, see accepted formats
Value The value associated with the curve node
Label A description of the node, used to identify it in bucketed sensitivity results

A single curve will consist of at least two nodes, and typically many more, with one row required for each node. Each curve must be contained within a single CSV file, but a single file may contain multiple curves.


This example file specifies one curve.

Valuation Date, Curve Name, Date,       Value,       Label
2014-01-22,     USD-Disc,   2014-01-23, 0.001571524, 0D
2014-01-22,     USD-Disc,   2014-02-24, 0.000934099, 1M
2014-01-22,     USD-Disc,   2014-03-24, 0.000948444, 2M
2014-01-22,     USD-Disc,   2014-04-24, 0.000935866, 3M
2014-01-22,     USD-Disc,   2014-07-24, 0.001027672, 6M
2014-01-22,     USD-Disc,   2014-10-24, 0.001280398, 9M
2014-01-22,     USD-Disc,   2015-01-26, 0.001841773, 1Y
2014-01-22,     USD-Disc,   2016-01-25, 0.005475661, 2Y
2014-01-22,     USD-Disc,   2017-01-24, 0.009655095, 3Y
2014-01-22,     USD-Disc,   2018-01-24, 0.013191876, 4Y
2014-01-22,     USD-Disc,   2019-01-24, 0.015783922, 5Y
2014-01-22,     USD-Disc,   2020-01-24, 0.017845475, 6Y
2014-01-22,     USD-Disc,   2021-01-25, 0.019539006, 7Y
2014-01-22,     USD-Disc,   2022-01-24, 0.02095814,  8Y
2014-01-22,     USD-Disc,   2023-01-24, 0.02217629,  9Y
2014-01-22,     USD-Disc,   2024-01-24, 0.023239034, 10Y
2014-01-22,     USD-Disc,   2026-01-26, 0.02501226,  12Y
2014-01-22,     USD-Disc,   2029-01-24, 0.026896017, 15Y
2014-01-22,     USD-Disc,   2034-01-24, 0.028543824, 20Y
2014-01-22,     USD-Disc,   2039-01-24, 0.029327868, 25Y
2014-01-22,     USD-Disc,   2044-01-25, 0.029693673, 30Y

Note that Microsoft Excel prefers the CSV file to have no spaces after the comma.