如何减少章节标题页的顶部边距?

如何减少章节标题页的顶部边距?

我需要所有页面的顶部边距为 1 英寸。章节标题页占用的边距比我需要的要多。

这是我的 MWE:

\documentclass[a4paper,12pt]{report}
\usepackage[left=1.5in,right=1in,top=1in,bottom=1in,includefoot,heightrounded]{geometry}
\usepackage{lipsum}
\renewcommand{\baselinestretch}{1.3}
\usepackage[pagestyles]{titlesec}
\newpagestyle{mine}{%
\headrule
\sethead{\itshape\chaptername\thechapter}{}{\itshape\chaptertitle}
\setfoot{}{}{\thepage}}%

\renewpagestyle{plain}{%
\setfoot{}{}{\thepage}}%

\titleformat{\chapter}[display]{\normalfont\huge\bfseries\centering}   {\chaptertitlename\ \thechapter}{20pt}{\Huge}
\titlespacing{\chapter}{0pt}{0pt}{1cm}
\pagenumbering{roman}
\pagestyle{mine}
\begin{document}
\chapter*{Abstract}
\lipsum[2-4]
\chapter{Introduction}

\pagenumbering{arabic}
\setcounter{page}{1}
\lipsum[2-10]

\end{document} 

请告诉我如何实现这一目标?

答案1

我只是将参数\titlespacing改为。#3-32pt

\documentclass[a4paper,12pt]{report}

\usepackage[showframe,left=1.5in,right=1in,top=1in,bottom=1in,includefoot,heightrounded]{geometry}
\usepackage{lipsum}
\renewcommand{\baselinestretch}{1.3}
\usepackage[pagestyles]{titlesec}
\newpagestyle{mine}{%
\headrule
\sethead{\itshape\chaptername\thechapter}{}{\itshape\chaptertitle}
\setfoot{}{}{\thepage}}%

\renewpagestyle{plain}{%
\setfoot{}{}{\thepage}}%

\titleformat{\chapter}[display]{\normalfont\huge\bfseries\centering}   {\chaptertitlename\ \thechapter}{20pt}{\Huge}
\titlespacing{\chapter}{0pt}{-32pt}{1cm}% <-- CHANGE DONE HERE!!
\pagenumbering{roman}
\pagestyle{mine}


\begin{document}
\chapter*{Abstract}

\lipsum[2-4]
\chapter{Introduction}

\pagenumbering{arabic}
\setcounter{page}{1}
\lipsum[2-10]

\end{document} 

在此处输入图片描述

在此处输入图片描述

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