Question

我在R中的Tabulizer的帮助下从PDF中提取了一些表。下面是其中一个表的代码

library(tabulizer)

location <- "http://napic.jpph.gov.my/portal/web/guest/main-page?
              p_p_id=ViewPublishings_WAR_ViewPublishingsportlet&
              p_p_lifecycle=2&
              p_p_state=normal&
              p_p_mode=view&
              p_p_resource_id=fileDownload&
              p_p_cacheability=cacheLevelPage&
              p_p_col_id=column-2&
              p_p_col_pos=1&
              p_p_col_count=2&
              _ViewPublishings_WAR_ViewPublishingsportlet_publishingId=433&
              _ViewPublishings_WAR_ViewPublishingsportlet_action=renderReportPeriodScreen&
              _ViewPublishings_WAR_ViewPublishingsportlet_language=&
              _ViewPublishings_WAR_ViewPublishingsportlet_pageno=1&
              publishingId=4537"

out <- extract_tables(location, page=3)

提取的表的输出有一些怪癖，例如它被拆分为2并且一些数据没有正确分隔。

[[1]]
     [,1]       [,2]      [,3]       [,4]       [,5]      [,6]      [,7]      [,8]     [,9]       [,10]    [,11]   [,12]   [,13]     [,14]  
[1,] " Review " "States " "Single  " "2 - 3  "  "Single " "2 - 3 "  "Detach " "Town  " "Cluster " "Low "   "Low "  "Flat " "Condo- " "Total"
[2,] "Period "  ""        "Storey "  "Storey "  "Storey " "Storey " ""        "House " ""         "Cost "  "Cost " ""      "minium/" ""     
[3,] ""         ""        "Terrace " "Terrace " "Semi- "  "Semi- "  ""        ""       ""         "House " "Flat " ""      "Apart-"  ""     
[4,] ""         ""        ""         ""         "Detach " "Detach " ""        ""       ""         ""       ""      ""      "ment"    ""     

[[2]]
      [,1]                               [,2] [,3]         [,4]       [,5]       [,6]       [,7]      [,8]      [,9]       [,10]      [,11]      [,12]      [,13]      
 [1,] "EXISTING STOCK  "                 ""   ""           ""         ""         ""         ""        ""        ""         ""         ""         ""         ""         
 [2,] ""                                 ""   ""           ""         ""         ""         ""        ""        ""         ""         ""         ""         ""         
 [3,] "Q3 2016P WP Kuala Lumpur 21,574 " ""   "66,286 "    "466 "     "5,968 "   "7,098 "   "4,671 "  "4,248 "  "3,786 "   "95,647 "  "50,156 "  "163,119 " "423,019"  
 [4,] "WP Putrajaya 0 "                  ""   "2,102 "     "0 "       "991 "     "203 "     "96 "     "0 "      "0 "       "2,538 "   "0 "       "1,785 "   "7,715"    
 [5,] "WP Labuan 835 "                   ""   "1,044 "     "70 "      "944 "     "5,686 "   "11 "     "0 "      "966 "     "680 "     "1,300 "   "225 "     "11,761"

我正在寻找的所需输出应该接近original table

此刻我很难过，如果有人能指出我正确的方向，我会感激不尽。提前致谢。

Answer 1

试试：

locate_areas(file, pages = NULL, resolution = 60L, widget = c("shiny",
  "native", "reduced"), copy = FALSE)

看看这个工具怎么用（你需要java）

找到要提取的区域，

然后你需要处理数据以获得你想要的。这是目前使用制表器的唯一方法。问候。

从pdf中提取的精炼表 - Tabulizer

1 个答案: