Hi R Colleagues,
I have a small R script that relies on two for-loops to pull data from a
database, make some edits to the data returned from the query, then inserts
the updated data back into the database. The script works just fine, no
problems, except that I am striving to get away from loops,
Hi Folks,
I am working with a package installed via GitHub that I would like to
modify. However, I am not sure how I would go about loading a 'local'
version of the package after I have modified it, and whether that process
would including uninstalling the original unmodified package (and,
convers
Hello R folks,
I have recently discovered the power of working with multiple data frames in
lists. However, I am having trouble understanding how to perform operations
on individual columns of data frames in the list. For example, I have a
water quality data set (sample data included below) that c
Jeff - Thanks so very much for the solution and tips, all very much
appreciated! Regards, Stevan
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Hi Frede - Thank you for responding. Not quite what I am after. Notice that I
included two data sets in my post, the first is the raw data whereas the
second (the desired df) is similar but has a column of sequential numbers in
another column at the end - that column of sequential numbers for each
Dear R Community,
I am having some trouble with a task that I hope you might be able to help
with. I have a dataset that includes the time and corresponding stream
discharge from numerous storms (example of structure with simplified data
below). I would like to produce a field that details the dur
Dear R Community - I hope you might be able to provide some guidance
regarding the use of the rle function. I have a set of time-series data
where a measured value is recorded every 30 seconds after the start of an
experiment. Many of the measured values repeat and I am interested only in
the value
Michael (and others) - Right, 'within' did work, I had placed it in the wrong
location previously, which your example code made clear. I wrapped several
of these functions within a function to address all the desired flags in a
single pass (probably horribly inefficient but it works). Thanks agai
forgot to attach the data set
http://r.789695.n4.nabble.com/file/n4170695/WaterData.txt WaterData.txt
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___
Thanks to everyone for continued assistance with this problem. I realize
that I had not included enough information, hopefully I have done so here.
I attached a dput output of a sample of the data titled 'WaterData' (and str
output below). Below are dput outputs of the function I am trying to ge
Bill (and David),
Thank you very much for taking the time to respond to my query.
You were right, I was creating and calling the function exactly as you had
predicted. I revised the structure based on your suggestion. It runs but
the output is an array of the flags that are not attached to the
Dear R Community,
I hope you might be able to assist with a small problem creating a function.
I am working with water-quality data sets that contain the concentration of
many different elements in water samples. I need to assign quality-control
flags to values that fall into various concentrati
Dear R Community,
I am new to R, and have a question that I suspect may be quite simple but is
proving a formidable roadblock for me. I have a large data set that
includes water-quality measurements collected over many 24-hour periods.
The date and time of sample collection are in a combined Dat
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