I have an array called "stocks" which contains numeric dates, ticker
symbols,prices, etc.  

 

> stocks[1:3,]

      DATE    TICKER PERMNO EXCHCD TSYMBOL TRDSTAT SHROUT      PRC
RET

1 19950131   EWST  10001             3         EWST       A
2224      -7.75000 -0.031250

2 19950228   EWST  10001             3         EWST       A
2224       7.54688 -0.026210

3 19950331   EWST  10001             3         EWST       A
2244       7.50000  0.006377

 

However when I call the part of the array dealing with the Ticker, I
get:

 

> stocks[2,2]

[1] EWST

16185 Levels:  A AA AAA AAAB AAABB AAB AABC AAC AACB AACC AACE AACI ...
ZVXI

 

Thus, when I reference this later, I get a numeric result and not the
symbol?  Is this because I need to change the format of stocks[,2] or
because it has these extra "levels".  

 

For example:

 

# START FIRST PORTFOLIO

port1=matrix(0, ctr,3)#matrix for portfolio starting in June 30th 1995

 

c=0

 

# sort data at time t=1 (June 30th, 1995)

for (i in 1:T) 

            {

              if (stocks[i,1]==19950630)

                        {

                          c=c+1

                          row=i

                          price = abs(stocks[i,8])

 

                          port1[c,1]=stocks[i,1] #put date in first
column

                          port1[c,2]=stocks[i,2] #ticker

                          port1[c,3]=price #price

                        }

                        

            } 

 

WHEN I TRY 

> port1[1,2]

[1] 4934

 

I SHOULD GET

 [1] EWST

????????


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