I would like to add an open price as a new row at the end of a "SPY" data frame that was produce using the quantmod package, I used the following code in order to rbind the new row but I got an error
# rm(list = ls()) # generally considered as bad manner in an MWE require(quantmod) options(scipen=999) spy <- getSymbols(("SPY") , src = 'yahoo', from = '2016-01-01', auto.assign = T) spy<-cbind(SPY) tail(SPY) SPY.Open SPY.High SPY.Low SPY.Close SPY.Volume SPY.Adjusted 2016-01-14 189.55 193.26 187.66 191.93 240795600 191.93 2016-01-15 186.77 188.76 185.52 187.81 324846400 187.81 2016-01-19 189.96 190.11 186.20 188.06 190196000 188.06 2016-01-20 185.03 187.50 181.02 185.65 280016900 185.65 2016-01-21 186.21 188.87 184.64 186.69 189174000 186.69 2016-01-22 189.78 190.76 188.88 190.52 163849600 190.52 I would like to insert new row manually into the spy dataset, so I tried to create a new xts object and than to use an rbind function but I got an error after those lines :
q <- c("2016-01-25",100,200,200,200,200,200) # creating the data colnames(q) <- colnames(SPY) # creating column names as in SPY But I got an error:
Error in `colnames<-`(`*tmp*`, value = c("SPY.Open", "SPY.High", "SPY.Low", : attempt to set 'colnames' on an object with less than two dimensions # creating the column names How can I add this hand made row on the data frame's top ?