美化RStudio的帮助页面

R中的package及其函数实在太多，经常遇到不会使用或者忘记如何使用的的package和函数，所以总会查阅帮助文档，在Rstudio中提供了专门的help面板，当遇到不懂的package或者函数时只需在其前面加?或者将其用help()包裹，即可跳转到帮助页面。下面就是Rstudio的帮助页面：

可以看出，其界面毫无美感可言，可能是开发者想要使用者专注于学习如何使用而特意为之！学过HTML的都知道，可以用css修改页面的样式，让其变得跟家美观。原始文档也有css文件，在rstudio安装路径下的resources文件夹中的R.css文件就控制了页面的样式：

我们可以修改该文档让其变得更加美观！原R.css文档源码如下：

/*
 * R.css
 *
 * Copyright (C) 2009-16 by RStudio, Inc.
 *
 * Unless you have received this program directly from RStudio pursuant
 * to the terms of a commercial license agreement with RStudio, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */

body, td {
   font-family: sans-serif;
   font-size: 10pt;
}

::selection {
   background: rgb(181, 213, 255);
}

::-moz-selection{
   background: rgb(181, 213, 255);
}

a:visited {
   color: rgb(50%, 0%, 50%);
}

h1 {
   font-size: x-large;
}

h2 {
   font-size: x-large;
   font-weight: normal;
}

h3 {
   color: rgb(35%, 35%, 35%);
}

h4 {
   color: rgb(35%, 35%, 35%);
   font-style: italic;
}

h5 {
   color: rgb(35%, 35%, 35%);
}

h6 {
   color: rgb(35%, 35%, 35%);
   font-style: italic;
}

img.toplogo {
   max-width: 4em;
   vertical-align: middle;
}

img.arrow {
   width: 30px;
   height: 30px;
   border: 0;
}

span.acronym {
   font-size: small;
}

span.env {
   font-family: monospace;
}

span.file {
   font-family: monospace;
}

span.option {
   font-family: monospace;
}

span.pkg {
   font-weight: bold;
}

span.samp {
   font-family: monospace;
}

div.vignettes a:hover {
   background: rgb(85%, 85%, 85%);
}

table p {
   margin-top: 0;
   margin-bottom: 6px;
}

table[summary="R argblock"] tr td:first-child {
   min-width: 24px;
   padding-right: 12px;
}

修改后的文档源码如下：

/*
 * R.css
 *
 * Copyright (C) 2009-11 by RStudio, Inc.
 *
 * Unless you have received this program directly from RStudio pursuant
 * to the terms of a commercial license agreement with RStudio, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */

body, td {
   font-family: sans-serif;
   font-size: 10pt;
}

::selection {
   background: rgb(181, 213, 255);
}

::-moz-selection{
   background: rgb(181, 213, 255);
}

a:visited {
   color: rgb(50%, 0%, 50%);
}

h1 {
   font-size: x-large;
}

h2 {
   font-size: x-large;
   font-weight: normal;
}

h3 {
   color: rgb(35%, 35%, 35%);
}

h4 {
   color: rgb(35%, 35%, 35%);
   font-style: italic;
}

h5 {
   color: rgb(35%, 35%, 35%);
}

h6 {
   color: rgb(35%, 35%, 35%);
   font-style: italic;
}

img.toplogo {
   vertical-align: middle;
}

img.arrow {
   width: 30px;
   height: 30px;
   border: 0;
}

span.acronym {
   font-size: small;
}

span.env {
   font-family: monospace;
}

span.file {
   font-family: monospace;
}

span.option {
   font-family: monospace;
}

span.pkg {
   font-weight: bold;
}

span.samp {
   font-family: monospace;
}

div.vignettes a:hover {
   background: rgb(85%, 85%, 85%);
}

table p {
   margin-top: 0;
   margin-bottom: 6px;
}

/* Below is my customization to the help page appearance */

body{
  background-color: #fcfcfc;
}

body, td{
    font-size: 15px !important;
    font-family: "Segoe UI" !important;
}

pre, code, table tr td:nth-child(1){
    font-family: "Consolas" !important;
}

code{
  border: 1px solid #E1E1E8;
  border-radius: 3px;
  color: #D14;
  background-color: #F7F7F9;
  padding: 0px 4px;
}

a{
  text-decoration: none;
  color: #008AC6;
}

a:hover, a:focus{
  color: #005580;
  text-decoration: underline;
}

pre{
    padding: 8px;
    border-style: solid;
    border-width: 1px 1px 1px 6px;
    border-color: #EAEAEA;
    border-left-color:  #418AB5;
    background-color: #FAFAFA;
    /* color: #005580; */
}

body>table:nth-child(1){
  border: 1px solid #DDE4E6;
  border-radius: 4px;
  background-color: #ECF0F1;
  padding: 4px 8px;
 }

div, body>table:nth-child(1) td{

  font-size: 10pt !important;
  text-shadow: 1px 1px 0px #FFF;
}

div{
  color: #DDE4E6;
}

h2 {
   font-weight: 600 !important;
   margin-top: 0.2em;
   padding-bottom: 10px;
   border-bottom: 1px solid #DDE4E6;
   color: #418AB5;
}

h3 {
   font-weight: 600;
   text-transform: uppercase;
   margin-top: 1.5em;
   margin-bottom: 0.6em;
}

h3 ~ p, h3 ~ table, h3+* table {
    /* margin-left: 20px; */
    padding-left: 20px;
}

h3 ~ pre{
  margin-left: 20px;
}

h3 + *{
    margin-top: 0px;
}

dt {
    font-style: italic;
}

p {
  line-height: 24px;
}

hr{
  border-style: hidden;
}

table[summary$="block"] p {
   margin-bottom: 16px;
}

table[summary$="block"] td:nth-child(1) {
    padding-right: 16px;
}

table[summary$="block"] td:nth-child(1) code{
    padding-right: 16px;
    border: none;
    background: none;
    font-weight: bold;
    color: black;
}

table[summary$="block"] tr {
  vertical-align: top;
}

table[summary$="block"] td:nth-child(2){
  margin: 0px;
}

h2 + table tr:nth-child(even), dl table tr:nth-child(even){
  background-color: #EEE;
}

h2 + table, dl table{
  border-spacing: 0px 2px;
}

h2 + table{
  width: 100%;
  padding-left: 20px;
}

也可以直接下载文末的R.css文件覆盖原始文件，然后重启Rstudio即可！

修改后的效果：

R.css下载：http://files.cnblogs.com/files/homewch/R.css

请点击上面的链接→鼠标右击→另存为

本文链接：http://www.cnblogs.com/homewch/p/5940638.html