I'm doing these manipulations on the data frame and wondering why does R have to remember historical data on my operation and not just keep the needed info. Probably a basic fundamentals of the way R handles data .. Pls point me to the manual if possible ..
I have this Index data: > head(NIFTY_INDX) Constituents.list.of.S.P.CNX.Nifty X X.1 X.2 X.3 1 2 Company Name Industry Symbol Series ISIN Code 3 4 ACC Ltd. CEMENT AND CEMENT PRODUCTS ACC EQ INE012A01025 5 Ambuja Cements Ltd. CEMENT AND CEMENT PRODUCTS AMBUJACEM EQ INE079A01024 6 Axis Bank Ltd. BANKS AXISBANK EQ INE238A01026 I Import the section that is relevant to me: > Indx_Constituents <- NIFTY_INDX[4:NROW(NIFTY_INDX),] > head(Indx_Constituents) Constituents.list.of.S.P.CNX.Nifty X X.1 X.2 X.3 4 ACC Ltd. CEMENT AND CEMENT PRODUCTS ACC EQ INE012A01025 5 Ambuja Cements Ltd. CEMENT AND CEMENT PRODUCTS AMBUJACEM EQ INE079A01024 6 Axis Bank Ltd. BANKS AXISBANK EQ INE238A01026 7 Bajaj Auto Ltd. AUTOMOBILES - 2 AND 3 WHEELERS BAJAJ-AUTO EQ INE917I01010 8 Bharat Heavy Electricals Ltd. ELECTRICAL EQUIPMENT BHEL EQ INE257A01018 9 Bharat Petroleum Corporation Ltd. REFINERIES BPCL EQ INE029A01011 > colNames <- NIFTY_INDX[2,] > colNames Constituents.list.of.S.P.CNX.Nifty X X.1 X.2 X.3 2 Company Name Industry Symbol Series ISIN Code I want to assign the info from colNames[1,] to Indx_Constituents .... I am unable to do this directly ... I can probably pull out the values and do it but there should be an easier way Now when I do this: > colNames[1,1] [1] Company Name 52 Levels: ACC Ltd. Ambuja Cements Ltd. Axis Bank Ltd. Bajaj Auto Ltd. Bharat Heavy Electricals Ltd. Bharat Petroleum Corporation Ltd. Bharti Airtel Ltd. Cairn India Ltd. Cipla Ltd. Company Name ... Wipro Ltd. Why does R have to remember the 52 levels?? Why can't it just have the relevant data stored What are the alternatives so that I can simply have my needed data in my data frames? Thanks for your explanation. ---------------------------------------------------------------------------- -------------------------- Thanks R-Helpers. Yes, this is a silly question and it will not be repeated! :-) ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
