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R QUESTIONS

How do I interpret rpart splits on factor variables when building classification trees in R?
How do I interpret rpart splits on factor variables when building classification trees in R?
With these it helps If the factor variable is Climate, with 4 possible values: Tropical, Arid, Temperate, Snow, and a node in my rpart tree is labeled as "Climate:ab", what is the split? , I assume you use standard way to plot tree which is
TAG : r
Date : November 25 2020, 07:01 PM , By : user3863060
How to better create stacked bar graphs with multiple variables from ggplot2?
How to better create stacked bar graphs with multiple variables from ggplot2?
I wish this help you You don't need prop.tables or count etc to do the 100% stacked bars. You just need +geom_bar(position="stack")
TAG : r
Date : November 22 2020, 07:01 PM , By : Patt Mont
Building all combinations of a vector - looking for a nicer way
Building all combinations of a vector - looking for a nicer way
hop of those help? I have a simple case which I could solve in an ugly way, but I am sure a much cleverer (and faster) way must exist. , Loud debugging? I just found this way
TAG : r
Date : November 21 2020, 07:01 PM , By : noahcartersc
Fetching comments from tweets of a single user in R
Fetching comments from tweets of a single user in R
I wish this helpful for you First, please review the protocol for asking questions. You got downgraded because you (1) did not provide a reproducible data set and (2) asked a question answered elsewhere here. Here is a quick answer though:
TAG : r
Date : November 21 2020, 07:01 PM , By : pete
Replace space between two words with an underscore in a vector
Replace space between two words with an underscore in a vector
will be helpful for those in need I have words, Genus species, and I want an underscore to replace the space between the two strings in R , You should use gsub:
TAG : r
Date : November 21 2020, 07:01 PM , By : Abdghafour Siraj-Edd
Alternate tick labels in grouped ggplot to avoid overlap in R
Alternate tick labels in grouped ggplot to avoid overlap in R
will help you I have grouped boxplots with ggplot , try to rotate you labels to have full information
TAG : r
Date : November 21 2020, 07:01 PM , By : Geoffrey Leach
NSE in tidyverse with select()
NSE in tidyverse with select()
fixed the issue. Will look into that further I have read a few stackoverflow questions on NSE with dplyr (here, here and here), but I am still struggling to apply it to my use.
TAG : r
Date : November 20 2020, 07:00 PM , By : nicolai
How to split a table by one column in R?
How to split a table by one column in R?
With these it helps If I have a table like this: , You can use split and cut
TAG : r
Date : November 19 2020, 07:01 PM , By : Shelby Frye
writing to a dataframe from a for-loop in R
writing to a dataframe from a for-loop in R
Any of those help I'm trying to write from a loop to a data frame in R, for example a loop like this> , You could use rbind:
TAG : r
Date : November 19 2020, 07:01 PM , By : Sotiris Ioannou
How to create a data.frame with a unknown number of columns?
How to create a data.frame with a unknown number of columns?
wish of those help There are many ways to do this kind of thing. Your first problem is that your "b" object is not a matrix. You need to define it as one with rows and columns (or by using rbind).You can create the data frames and then combine them (
TAG : r
Date : November 19 2020, 07:01 PM , By : user3861104
R dplyr's group_by consider empty groups as well
R dplyr's group_by consider empty groups as well
Hope this helps It is much easier to add spread from tidyr to get the same result as with table
TAG : r
Date : November 17 2020, 07:01 PM , By : Object Oriented
injection from R^d to [0,1]^d
injection from R^d to [0,1]^d
Any of those help There are various ways, but in general we can recognize two main steps: making the values nonnegative (by taking absolute value, squaring, etc.) and normalizing to sum to one. One pretty natural option would be
TAG : r
Date : November 17 2020, 07:01 PM , By : Nobee
Parsing a vector in R
Parsing a vector in R
seems to work fine I have some problem in R that I couldn't figure out what went wrong. , Surround each variable name with backticks:
TAG : r
Date : November 17 2020, 07:01 PM , By : Lucien Mariam
What is 'n' column in the below output?
What is 'n' column in the below output?
help you fix your problem I have a code line in R as below , It gets added by count*:
TAG : r
Date : November 17 2020, 07:01 PM , By : satya sai
Lattice: multiple plots in one window?
Lattice: multiple plots in one window?
this one helps. The 'lattice' package is built on the grid package and attaches its namespace when 'lattice' loaded. However, in order to use the grid.layout function, you need to explicitly load() pkg::grid. The other alternative, that is probably e
TAG : r
Date : November 15 2020, 07:01 PM , By : JiMing
R - If statement function to set value of new column
R - If statement function to set value of new column
it helps some times I have 2 columns pos and neg, each with a integer value. , We can use ifelse instead of if/else as ifelse is vectorized
TAG : r
Date : November 14 2020, 07:01 PM , By : Melody Gile Mendiola
Avoiding seasonality assumption for stl() or decompose() in R
Avoiding seasonality assumption for stl() or decompose() in R
I hope this helps . Both stl() and decompose() are for seasonal decomposition, so you must have a seasonal component. If you just want to estimate a trend, then any nonparametric smoothing method will do the job. For example:
TAG : r
Date : November 14 2020, 07:01 PM , By : user3859777
Cannot add new library path to .libPaths()
Cannot add new library path to .libPaths()
it should still fix some issue Hello I am trying to add a new path to .libPath() in RStudio in Windows. But it doesn't get added to it. Can someone please help me. , Remove the trailing slash. From ?.libPaths:
TAG : r
Date : November 13 2020, 07:01 PM , By : Saz Sindy
What's the higher-performance alternative to for-loops for subsetting data by group-id?
What's the higher-performance alternative to for-loops for subsetting data by group-id?
With these it helps This is pretty much exactly what the plyr package is designed to make easier. However it's unlikely that it will make things much faster - most of the time is probably spent doing the statistics.
TAG : r
Date : November 13 2020, 07:01 PM , By : MaxPickering
package ‘fpc’ is not available (for R version 3.5.3)
package ‘fpc’ is not available (for R version 3.5.3)
wish of those help The fpc package requires R version 3.6.0. You can see that in the summary page of the package:https://cran.r-project.org/web/packages/fpc/index.html
TAG : r
Date : November 12 2020, 07:00 PM , By : Adria
R - Convert CHR to Date
R - Convert CHR to Date
will help you I'm looking for a way to convert a chr to date. The current format of the csv is like this: "Jul 6, 2004" , You need to specify the format of your date string, e.g. in your case
TAG : r
Date : November 12 2020, 07:00 PM , By : tylerchafin
Get characters after and before a pattern match in R
Get characters after and before a pattern match in R
I wish did fix the issue. Lets say I have a string in R:
TAG : r
Date : November 11 2020, 07:00 PM , By : CaliforniaGirlCode92
Subtract even columns from odd ones in a data frame
Subtract even columns from odd ones in a data frame
should help you out R has vectorised operations to deal with this kind of task in a single call:
TAG : r
Date : November 10 2020, 07:00 PM , By : khairul.gazipur
Changing numbers in a string
Changing numbers in a string
I wish this help you I have a huge data frame. However, I have similar IDs and these were different observations. What I am trying to do is change the last/last two digit(s) in the column "ID". So, ID alnfru_00001 in row 5 should be alnfru_00006 and
TAG : r
Date : November 09 2020, 07:01 PM , By : solasa surya
Using && for character vectors in r
Using && for character vectors in r
I hope this helps . The boolean operator seems to work differently with character vectors and I was wondering if anyone knows why. , From the documentation:
TAG : r
Date : November 09 2020, 07:01 PM , By : RMI25
Why am I getting this New York output alone?
Why am I getting this New York output alone?
seems to work fine You can use factor with the labels being the state and labels being the first 3 digits
TAG : r
Date : November 09 2020, 07:01 PM , By : bassam el sobky
Saving H2o data frame
Saving H2o data frame
I wish this helpful for you After the first transformation with as.h2o(trainingset) you can export / save the file to disk and later import it again.
TAG : r
Date : November 06 2020, 07:00 PM , By : akarma
In R, when using named rows, can a sparse matrix column be added (concatenated) to another sparse matrix?
In R, when using named rows, can a sparse matrix column be added (concatenated) to another sparse matrix?
wish help you to fix your issue You should send the question to Martin Maechler, the author of much of the Matrix package. There is a cBind function, but it does not at the moment recognize rownames, only dimensions, at least as far as I can tell (ev
TAG : r
Date : November 06 2020, 07:00 PM , By : Alexander Hiam
How to convert hourly data to 6/12/24 hourly data
How to convert hourly data to 6/12/24 hourly data
I wish did fix the issue. I am new to here and also R. , I solved it with codes below.
TAG : r
Date : November 05 2020, 07:01 PM , By : Alf
Crosstab with multiple items
Crosstab with multiple items
it helps some times The Hmisc package has the summary.formula function that can do something along the lines you want. It is very flexible, so look at the help page for examples, but here is an application to your problem:
TAG : r
Date : November 05 2020, 07:01 PM , By : user3856854
count words with for loop in R
count words with for loop in R
this will help I use R for text mining in Arabic language and I would like to check on words if it the word have more than 6 character do the some change , You can perform that task without any loop
TAG : r
Date : November 04 2020, 07:01 PM , By : cjhdev
Replace cos^..(...) by (cos(...))^
Replace cos^..(...) by (cos(...))^
I wish this help you Define a function called cos^3, insert backticks into the original string around it and evaluate.
TAG : r
Date : November 03 2020, 07:01 PM , By : Nguyễn Tiên Kha
Is there a Pair-Wise PostHoc Comparisons for the Chi-Square Test in R?
Is there a Pair-Wise PostHoc Comparisons for the Chi-Square Test in R?
Any of those help The "chi-square test" is usually generated as the sum of squared individual cell deviations from the "expected" = products of row and column sums divided by the total sum. As such, one can compare the individual cell contributions t
TAG : r
Date : November 03 2020, 07:01 PM , By : Erictronic Gadget
How do I specify random factors in R?
How do I specify random factors in R?
it helps some times How do I specify random factors in R ? , Most simply (using the older nlme rather than the new lme4),
TAG : r
Date : November 02 2020, 07:01 PM , By : user3854992
ANOVA with 3 fixed factors in R
ANOVA with 3 fixed factors in R
should help you out Im trying to run a model with a response variable p and 3 fixed factors to get ANOVA. this is how my code looks like : , If you don't want to cbind p1...p10. Then try:
TAG : r
Date : October 31 2020, 08:00 PM , By : mike.int
convert numbers written in words to numbers using R programming
convert numbers written in words to numbers using R programming
hope this fix your issue We can pass a key/val pair as replacement in gsubfn to replace those words with numbers
TAG : r
Date : October 25 2020, 07:10 PM , By : dr1
In R, how can I look up a value in one column based on an interval in adjoining columns that includes values I want to m
In R, how can I look up a value in one column based on an interval in adjoining columns that includes values I want to m
it should still fix some issue In R, I have a reference table (dataframe) with three columns. Below is an example: , 1) sqldf An SQL left join can be used:
TAG : r
Date : October 25 2020, 07:10 AM , By : Newbie
Convert Date in YYYYMM to YYYY-MM-DD
Convert Date in YYYYMM to YYYY-MM-DD
help you fix your problem I have a data frame in the format of: , One option is to paste a day and then use as.Date
TAG : r
Date : October 25 2020, 07:10 AM , By : DimitriK
grep does not show all the indices, only [1]1
grep does not show all the indices, only [1]1
I hope this helps . EDIT: I assumed from your linked example that index referred to a vector. But now that I run the second code example in your question, I see you want index = position in string. So @ronak-shah is correct, not me.I think you want:
TAG : r
Date : October 24 2020, 06:10 PM , By : Shadi HG
Normalizing a dataframe having several conditions, R
Normalizing a dataframe having several conditions, R
I wish did fix the issue. Your conditions did not work properly: sum(!is.na(x)==1) for example is not what you want, because you want the sum over !is.na(x) and not the sum of !is.na(x) == 1.The following does the job:
TAG : r
Date : October 24 2020, 06:10 AM , By : PandaBIO
What is the equivalent of "everything()" operator in "data.table"?
What is the equivalent of "everything()" operator in "data.table"?
Hope that helps Let see the example: , Using setcolorder:
TAG : r
Date : October 24 2020, 06:10 AM , By : VASU KUMAR
The colors in ggplot do not correspond to the colors in the legend
The colors in ggplot do not correspond to the colors in the legend
Any of those help Colors don't match the legend because of the line : scale_fill_discrete(). If you want the same order, use reorder() in the fill parameters too, not only in the x =
TAG : r
Date : October 23 2020, 06:10 PM , By : Pankaj
How to add to each column of dataframe value from named vector?
How to add to each column of dataframe value from named vector?
hope this fix your issue I've got a dataframe df. , We can use base R (assuming the columns are in the same order)
TAG : r
Date : October 23 2020, 06:10 PM , By : AddWithValue
Losing data while saving csv character file
Losing data while saving csv character file
I think the issue was by ths following , The problem you are having is not how the csv is being written, but how it is being read back in. If you look at the file in a text editor, you should see the leading zeros still there.In base R, you can speci
TAG : r
Date : October 23 2020, 06:10 PM , By : Sameh Nashed
How to target arbitrary HTML attribute containing space in R?
How to target arbitrary HTML attribute containing space in R?
hop of those help? For attributes other than id and class you can use something like [title='last page']. The following returns "978":
TAG : r
Date : October 23 2020, 06:10 AM , By : Krzysztof Hadzicki
Iterate over a column and find the sum
Iterate over a column and find the sum
To fix this issue One option would be to do a group by 'SiteID', 'Date' column and then mutate to create a new column which is the sum of 'Result'
TAG : r
Date : October 23 2020, 06:10 AM , By : Amar Kumar Barnwal
reference another column with tidyeval in filter
reference another column with tidyeval in filter
this will help If 'foo' is already a column with "am" as string, select the first element of 'foo', convert it to symbol, evaluate (!!) and filter those rows where the value of 'am' is 1
TAG : r
Date : October 23 2020, 06:10 AM , By : Alex Juarez
How to create a new variable by comparing two other variables
How to create a new variable by comparing two other variables
I wish this help you Doing this step by step shouldn't be required when interaction and similar functions exist:
TAG : r
Date : October 23 2020, 06:10 AM , By : RominaZ
Retrieving elements that are occurring after adding a fixed number from a start element in a vector
Retrieving elements that are occurring after adding a fixed number from a start element in a vector
it should still fix some issue Another option would be to check that the modulo after subtracting the initial value equals zero:
TAG : r
Date : October 23 2020, 06:10 AM , By : Michael
Get total mean for variables nested in a list of lists of lists
Get total mean for variables nested in a list of lists of lists
To fix the issue you can do Assume a list of lists which might e.g. represent markets over time periods. We have six periods and in each period the same three markets. For each market there might be a lot of variables. Here, we are interested in the
TAG : r
Date : October 22 2020, 06:10 PM , By : ticklesjohnson
Render Xaringan Rmd when using _site.yml file
Render Xaringan Rmd when using _site.yml file
Hope that helps I don't think there's a way to disable it in rmarkdown, but you could try the following workaround to temporarily rename it, then name it back afterwards:
TAG : r
Date : October 22 2020, 06:10 AM , By : Mark K
Regex: matching multiple patterns and getting middle of string
Regex: matching multiple patterns and getting middle of string
To fix this issue I am only familiar with the base R regex functions, so here is an option using sub:
TAG : r
Date : October 22 2020, 06:10 AM , By : StratmanMedia
removing for loop with sample function
removing for loop with sample function
To fix the issue you can do Here is a data.table approach.In the answer ans, the variable-value (1 or 2) is your k.
TAG : r
Date : October 22 2020, 06:10 AM , By : Zameel Shaki
R: scraping additional data after POST only works for first page
R: scraping additional data after POST only works for first page
hope this fix your issue I think you are simply overthinking the problem. The issue lies in the xpath. Essentially the xpath that you are using for data extraction is the same for all pages. And it is, //*[@id="ctl00_cphContent_gvwPreparations"] The
TAG : r
Date : October 21 2020, 06:10 PM , By : lllusionize
R - Add ticks on top of plot with levels in variable?
R - Add ticks on top of plot with levels in variable?
I wish this help you You can convert the x variable to numeric and then group by and copy the labels from the original variable.
TAG : r
Date : October 21 2020, 06:10 PM , By : DMcGee
How to avoid factors in R when reading csv data
How to avoid factors in R when reading csv data
hop of those help? When reading data using read.table you can specify how your data is separated sep =, what the decimal point is dec =, how NA characters look like na.strings = that you do not want to convert strings to factors stringsAsFactors = F
TAG : r
Date : October 21 2020, 06:10 AM , By : Briggs Milburn
Meaning of :: syntax
Meaning of :: syntax
I wish did fix the issue. In R there are different packages available,"readxl" is one of them.
TAG : r
Date : October 21 2020, 06:10 AM , By : Nulifyer
How to get month and week of the month from year and week no in R?
How to get month and week of the month from year and week no in R?
Hope that helps I have a column with year and week of the year.I need month and week no of the month from that column.Any help would be highly appreciated. , Here is a dplyr solution
TAG : r
Date : October 21 2020, 06:10 AM , By : Napoleon Julius von
Can you save R code files with .RData objects for version control?
Can you save R code files with .RData objects for version control?
I think the issue was by ths following , you could zip the foo.RData file together with the run_analysis.R file and store the zipped file.the CRAN package [zip] (https://cran.r-project.org/web/packages/zip/zip.pdf) can be used to create the zip file
TAG : r
Date : October 20 2020, 06:10 PM , By : Paul Reinholdtsen
How to connect points of two different plots to each other using ggplot in R?
How to connect points of two different plots to each other using ggplot in R?
fixed the issue. Will look into that further I have a slightly hacky solution to your problem using gtable. First, we'll make the plots similar to how you made them. The thing I've changed is to specify common mappings inside the ggplot() call. Next,
TAG : r
Date : October 20 2020, 06:10 PM , By : Shruti

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