Julian, Thanks for the explanation.
________________________________ From: Julien Rioux <jri...@lyx.org> To: lyx-users@lists.lyx.org Sent: Tuesday, May 21, 2013 1:46:54 PM Subject: Re: LyX ; look up `weird error' in the index to The TeXbook.) On 28/03/2013 1:58 PM, John Kane wrote: > LyX 2.0.5.1 Ubuntu 12.10 > > I am trying to import and run a LateX file in LyX. The problem arises > when I have a figure with subfigures. A single figure processes with no > problem. > > The file is fine in LaTeX but chokes in Lyx. I have seen a few > references to the problem on the internet but I have not seen any > solution that makes sense to me. The closest thing seems to be > http://tex.stackexchange.com/questions/19946/missing-number-treated-as-zero > but since it is referring to a LaTeX problem not a LyX problem it does > not help. > > The original file produces 14 pages of pdf output with 12 figures both > single and multiple layouts with no problems and so I thought I'd see > how well it imports into LyX > > I have attached a stripped-down .tex file and two png files that I am > using as a test case. I imported the .tex file into LyX using File > > Import > Latex(plain)... > > The error message is : > Missing number, treated as zero. > Illegal unit of measure (pt inserted). > Missing number, treated as zero. > Illegal unit of measure (pt inserted). > Missing number, treated as zero. > Illegal unit of measure (pt inserted). > Missing number, treated as zero. > Illegal unit of measure (pt inserted). > Missing number, treated as zero. > Missing number, treated as zero. > Illegal unit of measure (pt inserted). > > Description: > \centering \begin{subfigure}{[} > b{]}{0.5\textwidth} \centering > A number should have been here; I inserted `0'. > (If you can't figure out why I needed to see a number, > look up `weird error' in the index to The TeXbook.) > > When I look at the LaTeX Preamble in LyX I get: > \usepackage[hang,flushmargin]{footmisc}\usepackage[english]{babel} > \usepackage[font={small,it}]{caption}\usepackage{subcaption}\author{John > the Toucanite} > \title{The Scholar} > > My LaTeX preamble is > \documentclass[12pt]{article} > \usepackage[margin = 4.0 cm]{geometry} > \usepackage[hang,flushmargin]{footmisc} > \usepackage[utf8]{inputenc} > \usepackage[T1]{fontenc} > \usepackage[english]{babel} > \usepackage{graphicx} > \usepackage[font={small,it}]{caption} > \usepackage{subcaption} > \author{John the Toucanite} > \title{The Scholar} > \date{} > > I tried pasting the LaTeX preamble into LyX and removed > \documentclass[12pt]{article} > \usepackage[margin = 4.0 cm]{geometry} > since they were giving me conflicts. > > I still get the same error. > > > > > Indeed, \begin{subfigure}[h]{0.5\textwidth} isn't parsed correctly by tex2lyx: It is put into ERT except that [h] ends up outside of ERT. On LaTeX output, LyX tries to protect the square brackets by outputting {[}h{]}, but this is incorrect LaTeX. Just checked and this bug is also in the development version LyX 2.1 -- Julien
