b****5
发帖数: 449 | 1 部分截图吧
for (i in 1:Lindex){
newPriceMatrix[,i]=price[,index[i]]
newMDY[i]= mdy[index[i]]
newDates[i]=dates[index[i]]
}
newMDY = as.numeric(newMDY)
newDates = as.Date(newDates,origin='1970-01-01')
maxDropsTickers=data.frame(matrix(rep(0,nPick*length(index)),nrow=nPick))
maxRisesTickers=data.frame(matrix(rep(0,nPick*length(index)),nrow=nPick))
我自己以前写过不少这种点子，比如连续跌N天买入，买52week high，momentum，mean
-reversion很多策略。和你们说下吧。
连跌N天买入，52 week high，卵用都没有。
有用的是啥？SP500的非能源股票，其他啥都可以，在跌到52 week low以后如果
volat... 阅读全帖 |
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w****e
发帖数: 1883 | 2 啥狗屁程序？
：部分截图吧
：for (i in 1:Lindex){
： newPriceMatrix[,i]=price[,index[i]]
： newMDY[i]= mdy[index[i]]
： newDates[i]=dates[index[i]]
：}
：newMDY = as.numeric(newMDY)
：newDates = as.Date(newDates,origin='1970-01-01')
：maxDropsTickers=data.frame(matrix(rep(0,nPick*length(index)),nrow=nPick))
：maxRisesTickers=data.frame(matrix(rep(0,nPick*length(index)),nrow=nPick))
：.......... |
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s*********r
发帖数: 909 | 3 data b c;
set a;
newdate=input(date,mmddyy10.);
if index(date,"/")=0 then output b;
if newdate=. then output c;
run;
*data b will contain invalid date 11789;
*data c will contain invalid date 13/15/1996. |
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s*********r
发帖数: 909 | 4 or you can put all invalid date values in one data set.
data b;
set a;
newdate=input(date,mmddyy10.);
if index(date,"/")=0 or newdate=.;
run; |
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c**********e
发帖数: 2007 | 5 The char variable has format 02/06/1985.
I tried to use
newdate=input(olddate,date10.);
but does not work. Anybody has any idea? Thank you. |
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G**S
发帖数: 1108 | 6
The char variable has format 02/06/1985.
I tried to use
newdate=input(olddate,date10.);
input(olddate,mmddyy10.);
but does not work. Anybody has any idea? Thank you. |
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s*********r
发帖数: 909 | 7 newdate=input(date, mmddyy10.) |
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w*******y
发帖数: 60932 | 8 they just added the refills back on select phones
chrome://updatescan/content/diffPage.xul ?id=1803&tit le=Prepaid%2
0phones%3A%2 0Pay%20As%20 You%20Go%20f rom%20T-Mobile&url=h ttp%3A//www.
t-mobile.com/shop/phones/prepaid.aspx &oldDate=tod ay%20at%200% 3A58&
newDate =today%20at% 201%3A58&del ay=0
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