[Tex/LaTex] Equivalent of one and half line spacing in terms pt

captionsline-spacing

I have the following decleration:

\documentclass[12pt,a4paper,oneside,noindent,nocenter,bold]{thesis}

The required format for captions of figures is that there should be a skip equal to 1.5 line. So, I do the following to get the required effect:

\usepackage[skip=18pt]{caption}

What I assume here is that 12pt x 1.5 = 18pt, which I am not sure of its validity. Therefore:

  1. How do we calculate equivalent of 1.5 line spacing in terms pt? If I want to make a line 1.5 of the a selected font manually, how should I calculate it?

  2. Is there any way to assign value to skip dynamically? I mean instead of using skip=18pt (or any constant), can I use something like skip=onehalfspacing with or without using other packages?

Best Answer

If you look at the documented code of setspace, one half spacing corresponds to a factor of 1.241 in 12pt, 1.25 for 10 and 11pt. But as the \skip in the caption package denotes the distance between caption and figure/table, I think they simply mean \skip=1.5\baselineskip. In points that would be approximately 1.5×14=21.75pt, but it's better to use the expression in \baselineskip as it gives some elasticity.