[R] Fwd: Merging multiple csv files to new file

[Bert Gunter]

1. Think more carefully about the appropriate data structure for what you
wish to do. It's unlikely to be .csv files, however.

In the absence of the above, a simple (but perhaps inappropriate) default
is:

2. Read the files into R and combine into a list.(You will need to read
about lists in R if you don't know what these are, of course).

3. Save your list as an .Rdata file. See ?save and ?load for details. But
do note that such files are special binary files only (easily anyway)
readable by R.


Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )


On Wed, Nov 3, 2021 at 8:36 AM gabrielle aban steinberg <
gabrielleabansteinberg using gmail.com> wrote:

> Hello, I would like to merge 18 csv files into a master data csv file, but
> each file has a different number of columns (mostly found in one or more of
> the other cvs files) and different number of rows.
>
> I have tried something like the following in R Studio (cloud):
>
> all_data_fit_files <- rbind("dailyActivity_merged.csv",
> "dailyCalories_merged.csv", "dailyIntensities_merged.csv",
> "dailySteps_merged.csv", "heartrate_seconds_merged.csv",
> "hourlyCalories_merged.csv", "hourlyIntensities_merged.csv",
> "hourlySteps_merged.csv", "minuteCaloriesNarrow_merged.csv",
> "minuteCaloriesWide_merged.csv", "minuteIntensitiesNarrow_merged.csv",
> "minuteIntensitiesWide_merged.csv", "minuteMETsNarrow_merged.csv",
> "minuteSleep_merged.csv", "minuteStepsNarrow_merged.csv",
> “minuteStepsWide_merged.csv", "sleepDay_merged.csv",
> "minuteStepsWide_merged.csv", "sleepDay_merged.csv",
> "weightLogInfo_merged.csv")
>
>
>
> But I am getting the following error:
>
> Error: unexpected input in "rlySteps_merged.csv",
> "minuteCaloriesNarrow_merged.csv", "minuteCaloriesWide_merged.csv",
> "minuteIntensitiesNarrow_merged.csv",
> "minuteIntensitiesWide_merged.csv", "minuteMETsNarrow_merged.csv"
>
>
> (Maybe the R Studio free trial/usage is underpowered for my project?)
>
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>
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