search for: tofer

Hi, I have a 'zoo' time series as below : Zoo_TS = zoo(5:1, as.Date(Sys.time())+0:4) Now I want to calculate First order difference of order 1, rolling window basis i.e. (Zoo_TS[2] - Zoo_TS[1] ) / Zoo_TS[1] (Zoo_TS[3] - Zoo_TS[2] ) / Zoo_TS[2] ..... Is there any direct function available to achieve this? Thanks,

Hi, I use Quandl package to download data from Quandl https://www.quandl.com Today when I tried to download data from there, I received below error : > Quandl('LME/PR_CO') Error in curl::curl_fetch_memory(url, handle = handle) : gnutls_handshake() failed: An unexpected TLS packet was received. I am using Quandl_2.8.0 in below platform R version 3.4.4 (2018-03-15) Platform:

Hi, Below is my simple result in R > x = "1282553.8210000000" > as.numeric(x) [1] 1282554 Any idea where all numbers in the decimal places (ie 8, 2, 1) are gone? Thanks,

Hi again, I use the *webshot* package to take snapshot from Webpage. However, when I try to take snapshot from* https://www.coinbase.com/ <https://www.coinbase.com/>*, this fails to take the full snapshot of that page. I tried following : > library(webshot) > webshot("https://www.coinbase.com/", 'aa.pdf') However in the pdf page, I done see the quotes which are

Thanks for that information. However how can I use R to directly get data from that API? On Fri, Jun 1, 2018 at 8:36 PM Martin M?ller Skarbiniks Pedersen < traxplayer at gmail.com> wrote: > On 1 June 2018 at 15:08, Christofer Bogaso <bogaso.christofer at gmail.com> > wrote: > > Hi again, > > > > I use the *webshot* package to take snapshot from Webpage. However, when > I > > try to take snapshot from* https://www.coinbase.com/ > > <https://www.coinbase.com/>*, this fails t...

Hi, I am struggling to split a data.frame as will below scheme : DF = data.frame(name = c('a', 'v', 'c'), val = 0); DF split_str = c('a', 'c') Now, for each element in split_str, R should find which row of DF contains that element, and return DF with all rows starting from next row of the corresponding element and ending with the preceding value of the

Hi, <This issue was previously posted in R-help, but advised to post here as a more relevant group> I was trying to install RQuantLib in my Ubuntu machine which failed with below information : *> install.packages('RQuantLib', repos='http://cran.rstudio.com/ <http://cran.rstudio.com/>', INSTALL_opts = c('--no-lock'))* *Installing package into