# line

Line model

Parameter |
Description |
Units |
Default value |
---|---|---|---|

scale |
Scale factor or Volume fraction |
None |
1 |

background |
Source background |
cm |
0.001 |

intercept |
intercept in linear model |
cm |
1 |

slope |
slope in linear model |
Å·cm |
1 |

The returned value is scaled to units of cm^{-1} sr^{-1}, absolute scale.

This model calculates intensity using simple linear function

**Definition**

The scattering intensity \(I(q)\) is calculated as

\[I(q) = \text{scale} (A + B \cdot q) + \text{background}\]

Note

For 2D plots intensity has different definition than other shape independent models

\[I(q) = \text{scale} (I(qx) \cdot I(qy)) + \text{background}\]

**Source**

**References**

None.

**Authorship and Verification**

**Author:****Last Modified by:****Last Reviewed by:**