Banbanli's Blog

Try to install the module “quandmod”

>library(quantmod)
>getSymbols("AAPL")
[1] "AAPL"
Warning message:
In download.file(paste(yahoo.URL, "s=", Symbols.name, "&a=", from.m, :
downloaded length 171720 != reported length 200

>AAPL
2016-05-10 93.33 93.57 92.11 93.42 33592500 93.42000
2016-05-11 93.48 93.57 92.46 92.51 28539900 92.51000
2016-05-12 92.72 92.78 89.47 90.34 76109800 90.34000
2016-05-13 90.00 91.67 90.00 90.52 44188200 90.52000
2016-05-16 92.39 94.39 91.65 93.88 61140600 93.88000
2016-05-17 94.55 94.70 93.01 93.49 46507400 93.49000
2016-05-18 94.16 95.21 93.89 94.56 41923100 94.56000

> write.zoo(AAPL, file=”AAPL.csv”, sep=”,”)
>chartSeries(AAPL)

http://dataology.blogspot.tw/2015/11/r.html
http://www.bituzi.com/2014/12/Rbacktest6mins.html
http://rstudio-pubs-static.s3.amazonaws.com/1195_6ae80fc27b38421dabc4952d2c50d3c3.html
http://www.r-software.org/paper
http://ccckmit.wikidot.com/r:main
http://wenku.baidu.com/link?url=tSwlPkr8aGSTXYQNYufVQ2yVtppMuBvYF2h8oZpO9g7insefi-8fYcoxW7Cp-Y-dvhi6A0Mdib_rNXP8DlHBNnB1gaBttpAJIblt8OtqFwO###

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http://stackoverflow.com/questions/15796499/date-information-disappears-when-save-to-csv

as SPY is a xts/zoo object this will do the trick:

replace:

write.csv(SPY, "C:/SPY.csv")

with

write.zoo(SPY,"C:/SPY.csv",index.name="Date",sep=",")

http://www.lijyyh.com/2014/06/iscsi-setup-software-based-iscsi-target.html

http://www.playpcesor.com/2016/03/google-maps-my-maps.html

原來跌10%是這個原因阿～=.=

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“We’ve replaced hundreds of (EMC) VMAX systems.”
By Jean-Jacques Maleval on 2016.04.06

http://www.storagenewsletter.com/rubriques/people/exclusive-interview-from-scott-dietzen-ceo-of-pure-storage/

哦，還沒有獲利!!

Scott Dietzen, 53, CEO of Pure Storage since September 2010, was formerly president and CTO of Zimbra, now part of VMware. Zimbra was originally acquired by Yahoo!, where he served as interim SVP of communications and communities. Prior to Zimbra, he was CTO of BEA Systems, where he helped craft the technology and business strategy for WebLogic that drove BEA from $61 million in annual revenues prior to the WebLogic acquisition to over $1 billion. He came to BEA in 1998 via the acquisition of WebLogic, in Java and web application server technology. Prior to WebLogic, he was principal technologist of Transarc (acquired by IBM), developer of distributed transaction and file sharing systems. He also serves on the board of Cloudera since June 2010. He earned his Ph.D. and M.S. in Computer Science and B.S. in Applied Mathematics and Computer Science from Carnegie Mellon University. Hobbies: ski, bike and scuba dive. He has two young children. “I’m a dad and I work, that’s all I do.” Dietzen also said that total of his salary and bonus is $350,000 for the year. “Any other figure is stock-based compensation, but I’ve not been selling shares.”

StorageNewsletter.com: How do you rank your company in the worldwide market of all-flash subsystems?
Dietzen: Well, you’ve seen us ranked between number two or number three in overall market share and EMC is generally given credit for being number one.

Pure Storage’s revenue always increased but the company never was profitable and has huge losses. What’s the problem?
We’re the fastest growing storage vendor, that we’re aware of, in history. The company is following the same recipe that NetApp did in its early days. We take the dollars from growing the business, and we hire sales and support people in order to grow very quickly. The business was actually cash flow positive in the fourth quarter of last year, $30 million on $150 million in revenue. So we’re generating cash even though we are not yet profitable. Read more »