R中的readPDF（tm软件包）

我试着在R中阅读一些在线pdf文档。我使用了

readRDF

函数。我的剧本是这样的

safex <- readPDF(PdftotextOptions='-layout')(elem=list(uri='C:/Users/FCG/Desktop/NoteF7000.pdf'),language='en',id='id1')

safex
readPDF
已经并且可能不值得麻烦（请查看）

假设

您已安装（有关详细信息，请参阅）

您的路径都是有序的（有关如何执行此操作的详细信息，请参阅），并且您已经重新启动了计算机

那么您最好避免使用
readPDF
，而是使用以下解决方法：

system(paste('"C:/Program Files/xpdf/pdftotext.exe"', 
             '"C:/Users/FCG/Desktop/NoteF7000.pdf"'), wait=FALSE)

然后将文本文件读入
R
中，就像这样

require(tm)
mycorpus <- Corpus(URISource("C:/Users/FCG/Desktop/NoteF7001.txt"))

我假设你所有的
路径都是有序的？@RomanLuštrik，你的意思是我在Windows环境变量中编辑路径吗？是的，这些路径是有序的吗？您能访问函数使用的所有程序吗？
inspect(mycorpus)

A corpus with 1 text document

The metadata consists of 2 tag-value pairs and a data frame
Available tags are:
  create_date creator 
Available variables in the data frame are:
  MetaID 

[[1]]
Market Notice
Number: Date F7001 08 May 2013

New IDX SSF (EWJG) The following new IDX SSF contract will be added to the list and will be available for trade today.

Summary Contract Specifications Contract Code Underlying Instrument Bloomberg Code ISIN Code EWJG EWJG IShares MSCI Japan Index Fund (US) EWJ US EQUITY US4642868487 1 (R1 per point)

Contract Size / Nominal

Expiry Dates & Times

10am New York Time; 14 Jun 2013 / 16 Sep 2013

Underlying Currency Quotations Minimum Price Movement (ZAR) Underlying Reference Price

USD/ZAR Bloomberg Code (USDZAR Currency) Price per underlying share to two decimals. R0.01 (0.01 in the share price)

4pm underlying spot level as captured by the JSE.

Currency Reference Price

The same method as the one utilized for the expiry of standard currency futures on standard quarterly SAFEX expiry dates.

JSE Limited Registration Number: 2005/022939/06 One Exchange Square, Gwen Lane, Sandown, South Africa. Private Bag X991174, Sandton, 2146, South Africa. Telephone: +27 11 520 7000, Facsimile: +27 11 520 8584, www.jse.co.za

Executive Director: NF Newton-King (CEO), A Takoordeen (CFO) Non-Executive Directors: HJ Borkum (Chairman), AD Botha, MR Johnston, DM Lawrence, A Mazwai, Dr. MA Matooane , NP Mnxasana, NS Nematswerani, N Nyembezi-Heita, N Payne Alternate Directors: JH Burke, LV Parsons

Member of the World Federation of Exchanges

Company Secretary: GC Clarke
Settlement Method

Cash Settled

-

Clearing House Fees -

On-screen IDX Futures Trading: o 1 BP for Taker (Aggressor) o Zero Booking Fees for Maker (Passive) o No Cap o Floor of 0.01 Reported IDX Futures Trades o 1.75 BP for both buyer and seller o No Cap o Floor of 0.01

Initial Margin Class Spread Margin V.S.R. Expiry Date

R 10.00 R 5.00 3.5 14/06/2013, 16/09/2013

The above instrument has been designated as "Foreign" by the South African Reserve Bank

Should you have any queries regarding IDX Single Stock Futures, please contact the IDX team on 011 520-7399 or idx@jse.co.za

Graham Smale Director: Bonds and Financial Derivatives Tel: +27 11 520 7831 Fax:+27 11 520 8831 E-mail: grahams@jse.co.za

Distributed by the Company Secretariat +27 11 520 7346

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