On Tue, 30 Dec 2025, Andre Luiz Tietbohl Ramos writes:
> Hello everyone,
>
> I solved the problem! I had nothing to do with any of the aspects
> explained. It might seem even funny to some...
> My lack of in depth knowledge about the R platform was the culprit. I
> didn't know R kept all the workspace symbols between sessions if saved.
> Thus, there was some kind of mess with them. My apologies.
>
> The solution was very simple: rm(list = ls()). Everything works fine just
> a before with the functions I developed originally. In order to guarantee
> it doesn't happen again I put this command first in the startup
> configuration and in the .Last function of the .Rprofile.
>
> Regards,
>
> --
> André Luiz Tietbohl Ramos, PhD.
>
R has commandline options for not saving/restoring the
workspace; decent editors allow you to put such options into
your configuration:
--no-save
Don't save [workspace at the end of the session]
--no-restore-data
Don't restore previously saved objects
--no-restore-history
Don't restore the R history file
--no-restore
Don't restore anything
kind regards
Enrico
>
> Em seg., 29 de dez. de 2025 às 17:58, Enrico Schumann
> <[email protected]>
> escreveu:
>
>> On Mon, 29 Dec 2025, Andre Luiz Tietbohl Ramos writes:
>>
>> > Em seg., 29 de dez. de 2025 às 10:25, Enrico Schumann
>> > <[email protected]>
>> > escreveu:
>> >>
>> >> Could you please post a small, reproducible example (in plain
>> >> text)? Otherwise, it will be hard so see where your problem
>> >> lies.
>> >>
>> >>
>> >> kind regards
>> >> Enrico
>> >>
>> >
>> > Hello,
>> >
>> > Thanks for the interest, Enrico. It is below.
>> > R> tickers
>> > "AALR3.SA" "AGRO3.SA" "ALPA3.SA" "ALPA4.SA" "ALUP11.SA" "AMER3.SA"
>> "
>> > AMOB3.SA" "ANIM3.SA" "ASAI3.SA" "AURE3.SA" "AZUL4.SA" "B3SA3.SA" "
>> > BAUH4.SA" "BAZA3.SA" "BBAS3.SA" "BBDC4.SA" "BBSE3.SA" "BDLL4.SA" "
>> > BEES3.SA" "BIDU34.SA" "BLAU3.SA" "BMOB3.SA" "BPAC11.SA" "BPAN4.SA" "
>> > BRAP4.SA" "BRFS3.SA" "BRKM5.SA" "BRSR6.SA" "BRST3.SA" "BSLI3.SA" "
>> > CBAV3.SA" "CEAB3.SA" "CEBR3.SA" "CMIG3.SA" "CMIG4.SA" "CMIN3.SA" "
>> > COPH34.SA" "CPFE3.SA" "CPLE6.SA" "CRPG5.SA" "CSAN3.SA" "CSED3.SA" "
>> > CSMG3.SA" "CSNA3.SA" "CSUD3.SA" "CXSE3.SA" "CYRE3.SA"
>> > ...
>> > R>
>> > R> getSymbols(tickers, src = "yahoo", from = start, to = end, maxgap =
>> 10,
>> > auto.asign = TRUE)
>> > R>
>> > R> tickers <- mget(ls(pattern = paste(tickers, collapse = "|")))
>> > R>
>> > R> names(tickers)
>> > [1] "AALR3.SA" "AFHI11.SA" "AGRO3.SA"
>> > "ALPA3.SA" "ALPA4.SA" "ALUP11.SA"
>> > [7] "AMER3.SA" "AMOB3.SA" "ANIM3.SA"
>> > "ASAI3.SA" "AURE3.SA" "AZUL4.SA"
>> > [13] "B3SA3.SA" "BAUH4.SA" "BAZA3.SA"
>> > *"BBAS3.SA <http://BBAS3.SA>" "BBAS3.SA_log_returns"
>> > "BBAS3.SA_mean_log" *
>> > [19] "BBAS3.SA_sd_log" "BBDC4.SA" "BBSE3.SA"
>> > "BBSE3.SA_log_returns" "BBSE3.SA_mean_log" "BBSE3.SA_sd_log"
>> > [25] "BDLL4.SA" "BEES3.SA" "BIDU34.SA"
>> > "BLAU3.SA" "BMOB3.SA" "BPAC11.SA"
>> > [31] "BPAN4.SA" "BRAP4.SA" "BRFS3.SA"
>> > "BRKM5.SA" "BRSR6.SA" "BRST3.SA"
>> > ...
>> > R> class(tickers$BBAS3.SA)
>> > [1] "xts" "zoo"
>> > R> colnames(tickers$BBAS3.SA)
>> > [1] "BBAS3.SA.Open" "BBAS3.SA.High" "BBAS3.SA.Low"
>> > "BBAS3.SA.Close" "BBAS3.SA.Volume" "BBAS3.SA.Adjusted"
>> > R> class(tickers$BBAS3.SA_log_returns)
>> > [1] "xts" "zoo"
>> > R> colnames(tickers$BBAS3.SA_log_returns)
>> > [1] "daily.returns"
>> > R> class(tickers$BBAS3.SA_mean_log)
>> > [1] "numeric"
>> > R> R> colnames(tickers$BBAS3.SA_mean_log)
>> > NULL (as expected)
>> > R>
>> >
>> > Therefore the list I get from the mget operation above contains several
>> > elements with different types, which may include even _sd_ columns as
>> well.
>> > My objective is to get rid of the .SA suffix used for Brazilian stocks in
>> > all elements downloaded as well as their columns. I chose to put
>> > everything in a list and operate on it.
>> >
>>
>> [...]
>>
>> Like Eric, I cannot reproduce your result. In addition
>> to Dirk's suggestions for debugging:
>>
>> i) start from a clean session (no workspace-loading);
>>
>> ii) since your column 'tickers$BBAS3.SA_log_returns' is named
>> "daily.returns" -- any chance you are (accidentally) calling
>> 'quantmod::dailyReturn' in your code?
>>
>> --
>> Enrico Schumann
>> Lucerne, Switzerland
>> https://enricoschumann.net
--
Enrico Schumann
Lucerne, Switzerland
https://enricoschumann.net
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