R how to use files in the same packages
You appear to misunderstand how package works: by having a file with a function in the R/ directory, it is already visible to other code in the package. If you want to make it available to other packages, you can control this via the NAMESPACE file. All this is well-documented...
Plotting Modeled Data as my Regression Curve in R/RStudio
First plot line x = c(1,2,3,4,5,6,7,8,9,10,11,12) y = c(.994,.954,.860,.721,.570,.434,.362,.244,.185,.142,.110,.087) plot(x, y, type = "l") Then points x=c(1.11,2.84,3.97,6.40,7.60,7.43,5.75,3.60,3.59) y=c(0.973,0.818,0.74,0.44,0.2688,0.282,0.50,0.613,0.656) points(x, y, col = "red") ...
unable to get column names when using skip along with read.csv
If you skip lines in a file, you skip the complete line, so if your header is in the first line and you skip 100 lines, the header line will be skipped. If you want to skip part of the the file and still keep headers, you'll need to read...
Running two instances of Rstudio simultaneously on Linux
@infominer suggested a good solution, which is to simply type rstudio in the command line. That's what I ended up doing
Error in RStudio with read.table(url…)
RStudio and RGUI may be using different defaults for setInternet2(), so try running setInternet2(use=FALSE) at the beginning of your session. Here is an explanation from RStudio (2013): Also we call setInternet2(use=TRUE) on startup which takes proxy settings from Internet Explorer to make proxies work in the majority of cases. We...
Evaluate a Chunk based on the output format of knitr
Try this: ```{r eval = knitr::opts_knit$get("rmarkdown.pandoc.to") == "latex"} "Hi, I'm in a PDF!" ``` Or, to evaluate chunks only when you're not rendering to PDF: ```{r eval = knitr::opts_knit$get("rmarkdown.pandoc.to") != "latex"} "Hi, I'm not in a PDF!" ``` ...
In RStudio, can I test, build and install my current package quickly?
RStudio offers a simple way to do this using the GUI. The first step is to create a RStudio project for your package by clicking on Project: (none) in the top right corner of RStudio and then choosing new project. I assume you have all your package files in some...
Create time-series graph in Shiny from user inputs
I am assuming you are going to want to input multiple values at once, so a numeric input box for each point would be a bit cumbersome. I have taken the liberty of making it so you can copy and paste in comma delimited data: (Note: the value is only...
Arranging subgroups in ggplot [duplicate]
Just add this before ggplot(): data$group <- factor(data$group, levels = c("Nor", "i_GS", "GS")) Idea is that ggplot reads from factors the way they are arranged in data frame. Hence you have to rearrange the factor in the data frame if you want to see them visualized differently....
R in Ubuntu Server 14.04 - Writing file to a samba sharing in which a directory is protected by user/pass
I found it can be done via a shell script in Ubuntu. The command is write(somefile, file = "|sh shellWriteSamba.sh") Edit: The complete solution is in R - write() a file to a SAMBA share...
suppress console output in r markdown, but keep plot
Wrapping any object in invisible will prevent automatically printing it. You should be able to use invisible(lapply(obj,function(x) plot(x,main="some plot"))) However the fact that echo=FALSE doesn't work suggests that there might be something else going on....
Creating a loop with character variables on R - for two-sample t.test
I am assuming you are doing the regression of each indicator against the same f. In that case, you can try something like: p_vals = NULL; for(this_indicator in indicators) { this_formula = paste(c(this_indicator, "f"), collapse="~"); res = t.test(as.formula(this_formula)); p_vals = c(p_vals, res$p.value); } One comment, however: are you doing any...
Keep getting errors when trying to knit a PDF using R Markdown
For those of you who are having similar issues. I fully uninstalled MIKTEX and reinstalled a complete version of proTeXt (which is basically a full install of MIKTEX plus a LaTeX IDE called TeXstudio) and it fully fixed my issue. I am now able to compile PDFs through RMarkdown without...
Using R Studio Console commands not parsed in Knitr markdown file
You have to define the object in the Knitr code. Knitr, by design, operates in a clean room and has to be self-contained. It doesn’t look at your existing RStudio environment (in fact, that would be terrible because it would make the resulting code entirely unreproducible). As an example, here’s...
looking at the next column in a data frame based on a condition in previous column
Assuming that the columns occur in "key/value" pairs, subset the dataset ("df") in to value ('df1') and key ('df2') datasets. df1 <- df[seq(2, ncol(df), by=2)] df2 <- df[seq(1, ncol(df), by=2)] To get the "count" of each class ("High", "Low", "Medium") in each row, we can use the apply with MARGIN=1....
pick rows from every group in data frame only when condition satisfies
bycol <- split(mydf,as.factor(mydf$col1)) newdf <- data.frame() for (i in 1:length(bycol)) { col <- bycol[[i]][2] lcol <- col >= 100 start <- min(which(lcol == TRUE)) fin <- nrow(col) newdf <- rbind(newdf, bycol[[i]][start:fin,]) } This shows what the OP first asked for, which was: > newdf col1 col2 2 1 100 3...
sjplot sjt.frq in new window / tab
Currently, there is no history feature for the Viewer pane in RStudio. You may open the tables in your browser instead (or additional, there's an icon in the Viewer pane), so you have multiple browser tabs, each with a table output. Or you "concat" multiple tables and show them in...
.Rd file generation in a package using Rcpp
As far as I know if you use RStudio all this is done for you -- because RStudio very much supports tboth roxygen2 and of course Rcpp. You may have to ensure you click a box in the RStudio Tools configuration to use roxygen. I still do it by hand,...
Shiny selectInput produces a list of numbers
Since your example isn't reproducible, I'm going to guess that class(CompanyNames$Companynm) is a "factor" rather than a "character". When you use c() on a factor, it strips all the information used for the levels and converts it to a simple numeric column. For example x<-data.frame(a=c("apple","banana","pear")) x$a # [1] apple banana...
Modifying a Tukey HSD 95% family-wise CL plot in Rstudio
Try this: TukeyHSD(Gastropods.ANOVA) tuk<-TukeyHSD(Gastropods.ANOVA) psig=as.numeric(apply(tuk$`Zone:Species`[,2:3],1,prod)>=0)+1 op=par(mar=c(4.2,9,3.8,2)) plot(tuk,col=psig,yaxt="n") for (j in 1:length(psig)){ axis(2,at=j,labels=rownames(tuk$`Zone:Species`)[length(psig)-j+1], las=1,cex.axis=.8,col.axis=psig[length(psig)-j+1]) } par(op) You will have something similar to this plot ...
ordering non-decreasing functions then adding them in R
r,function,order,sequence,rstudio
If you want a function that takes vectors A, B, C, and D and input and outputs a sorted version of them, you can try: sortAll <- function(A, B, C, D) sort(c(A, B, C, D)) And then you can run it with something like: A <- c(1,2,2,3) B <- c(5,6,7,8)...
Creating US Map Including State Borders in ggvis
I yanked a bit from the post I linked to for a more complete example (that includes using a much saner projection for the contiguous 48 US states): library(ggplot2) library(ggvis) library(dplyr) library(rgdal) library(httr) # decent US shapefile and httr lets us only d/l when needed stop_for_status(GET("http://eric.clst.org/wupl/Stuff/gz_2010_us_040_00_500k.json", write_disk("us.geojson"), progress())) states <-...
Can't open connection when shortcut-knitting in RStudio
If you only care about a solution under Windows, I believe you need to setInternet2(TRUE) in te Rmd file before you read the file, since it is essentially an HTTPS link, which you cannot read into R by default. A more portable solution is to use the downloader package to...
How to configure R-3.1.2 with --enable-R-shlib
make uninstall only undoes the make install step, which generally copies the files from the compilation dir to dir(s) on the system as appropriate, and puts binaries in say /usr/bin so they are on the path. If you wanted to clean up the dir where you did a previous compile,...
Convert a date to a day number (monday = 1, tuesday = 2) in R
r,date,numbers,rstudio,data-type-conversion
You can do this easily with lubridate although it indexes Sunday as '1'. So since March 1, 2014 was a Saturday it would return '7' library(lubridate) wday(mdy("3-1-2014")) [1] 7 ...
R/RStudio, Yosemite, and Java
instead the java you have installed download this one https://support.apple.com/kb/DL1572?viewlocale=en_US&locale=en_US after installing it, your problem will be solved ...
how to extract specific paragraphs from a text file in R [closed]
regex,r,rstudio,text-processing
replace "/tmp/out" with your filename txt <- readLines("/tmp/out") lns <- data.frame(beg=which(grepl("beginning of the paragraph i want",txt)), end=which(grepl("end of the paragraph i want",txt))) txt.2 <- lapply(seq_along(lns$beg),function(l){ paste(txt[seq(from=lns$beg[l], to=lns$end[l], by=1)],collapse=" ") }) txt.2 # or for referencing by the star, the lns is obtained this way lns <- data.frame(beg=rev(rev(grep("[*]",txt) + 6)[-1]), end=(grep("[*]",txt)...
R files in capital and lowercase. Difference?
There should be no difference. If you are getting permission denied on reading any files, then you need to change the permissions so you can read them. If you are on unix, you can use the following command assuming you own the files. chmod u+r <filename> ...
Generating LaTeX tables instead of text in Rstudio
R markdown in R Studio makes this sort of thing much nicer. Blocks of R code can be declared with three backticks{r}code and then inline code with a single backtick and r. The following does something similar to what you want. --- title: "Untitled" author: "user" date: "Tuesday, May 05,...
Error while using rarecurve() in R
There is no reproducible example. However, your usage is wrong. Function rarecurve needs input data of counts: it samples individuals from each sampling unit (row), and therefore you must have data on individuals. The error is caused by the use of wisconsin(lac.com.data): after that all rowSums(lac.com.data) will be 1, and...
using -knitr- to weave Rnw files in RStudio
After spending hours to try to figure out the problem, I updated R (v 3.2.0) and everything works fine now. It is not clear if the problem was due to some packages conflict, for sure it wasn't an RStudio problem (as I had initially thought).
RMarkdown: Why do I have to reinstall all packages everytime I knit?
Since "require returns (invisibly) a logical indicating whether the required package is available" you can conveniently use it for programming to either load the package or, if it's not available, (try to) install it and load it afterwards. So you could modify your code along the lines of: if (!require(dplyr))...
operating on sub group inside data frame very slow
You could try dplyr. Order the dataset by "id", "dayofweek" (arrange(..)). Create the "nextdaypushupcount" using lead after grouping by "id". Remove the last observation for each group (slice(..)). Get the cumsum of "pushupcount" to create "cumulativepushups". library(dplyr) df1 <- arrange(df, id, dayofweek)%>% group_by(id) %>% mutate(nextdaypushupcount=lead(pushupcount)) %>% slice(-n())%>% mutate(cumulativepushups=cumsum(pushupcount)) df1 #...
Shiny Presentation (ioslides): Custom CSS and logo Windows 7/8
This problem can be fixed by installing version 0.5.2 of the rmarkdown package. Currently this is the development version and can be installed from GitHub using: install.packages("devtools") library(devtools) devtools::install_github("rstudio/rmarkdown") ...
Change background colour of rmarkdown pdf output
r,pdf,render,rstudio,rmarkdown
Well, one solution is to use latex i.e. first create a .Rnw file which loads the latex pagecolor package: \documentclass{article} \usepackage{pagecolor} \begin{document} \pagecolor{yellow} \section{A very yellow page} <<plot1, echo=FALSE>>= hist(rnorm(1000)) @ \clearpage \subsection{Another yellow page} <<summary1>>= summary(mtcars) @ \end{document} In RStudio this will look like: You now want to convert...
Howto include js dependencies of DT datatable in Rmarkdown using knitr and pandoc
The package RStudio is using under the hood is rmarkdown. It handles the Knit command and delegates work to knitr and pandoc, and it's also responsible for bundling dependencies and injecting them into the doc. You likely already have the package installed, so you should be able to do this...
Output R loop content and output in knitr html
r,for-loop,markdown,rstudio,knitr
You should use print or cat to force output : ```{r} for(i in seq_along(dflist)){ print(paste('head data set:' , names(dflist)[i])) ## sub title print(head(dflist[[i]])) ## content cat(rep("*",20),'\n') ## separator } ``` ...
Sourcing the code
Try using paste0 to break down the path. If you want to source the following file: "/home/user/work_dir/my_project/source_file.R" Then you can break the path by using: source(paste0("/home/user/", "work_dir/my_project/", "source_file.R" ) ) ...
Counting frequency of value in a column in a data frame in R not giving expected results
You could try largedf <- totaldataset[Reduce(`|`, lapply(totaldataset[19:43], function(x) x=='4280')), ] ...
Finding the period with the highest rolling sum per category
It's a little difficult to test this without an idea of what your data looks like, and I can't say how fast it will be, but here's one possible solution. Create sample data frame: set.seed(123) df <- data.frame( CLIENTID = rep(c("a", "b", "c", "d"), each=10), MONTHID = as.vector(replicate(4, sample(1:40, 10))),...
Highlighting bash code with knitr / rmarkdown
r,syntax-highlighting,rstudio,knitr,rmarkdown
The default syntax highlighting theme does not work well for non-R code chunks, and you can use other themes, e.g. pygments --- title: "Bash Highlighting" output: html_document: highlight: pygments --- ```{r, engine = 'bash', eval = FALSE} for foo in (ls bar) do echo $foo done ``` ...
Trying to make the command lines start plotting from the position zero with a vector as argument
You can just add the x to the plot lines(1 : length(y) - 1, y, col="blue") ...
Is there any direct method to fetch data from a Couchbase server to R Studio?
Couchdb has restful http interface so you can query the database directly using that. There is this package for R that should make it easier for you: http://cran.r-project.org/web/packages/RCurl/index.html Here is an example of a Uri that might be used to query a couch view: /database/_design/designdocname/_view/viewname. Bear in mind that couch...
Copy/paste table into gmail
I would use knitr and kable in RStudio (New file R markdown, output format html): --- title: "attaching pretty R tables to your gmail message" date: "4 Jun 2015" output: html_document --- This is an example of a pretty table, produced with Knitr in RStudio: * RStudio: New file R...
Differences in R Markdown syntax highlighting for in-line code
r,syntax-highlighting,rstudio,rmarkdown
We changed the treatment of code in a recent release of rmarkdown (the red was too strong). My guess is that you have two different versions of the rmarkdown package in play. If you update both systems to the most recent version from CRAN (v0.6.1 as of the time of...
Source R script using 32 bit R from 64 bit RStudio
I think you want to use Rscript.exe to run the file, rather than R.exe. You can do this by just using /bin/i386/Rscript.exe your_rfile.R - this is how I would execute R code from the command line in Windows.
Multiple plots in one figure in R: Error if only ONE column
RStudio will throw that error if the plot window is sized too small for what you are trying to plot. You could try dragging that plot window larger relative to the console etc, or you could write your plot directly to a file, for instance using pdf() and dev.off().
Simulating and assigning multiple vectors in R
Similar to what Jaehyeon Kim proposes above: > vs <- lapply(1:3, function(x) rnorm(100,0,1)) > str(vs) ...produces a list of numeric vectors of length 100: List of 3 $ : num [1:100] 0.367 1.549 0.453 -0.374 -0.105 ... $ : num [1:100] 0.254 -0.333 -1.732 -0.213 2.001 ... $ : num...
The error when publishing a shiny app
As the error message says, please install shinyapps from https://github.com/rstudio/shinyapps It is not a package on CRAN, so you cannot install.packages().
Missing projection file in R's rgdal package for geospatial analysis
I had a quick Google and came across this post which suggests this was an OS X error where the packages were built incorrectly. On my Mac system, I wasn't able to reproduce your error, so for what it's worth I installed my versions of rgdal and rgeos from http://www.kyngchaos.com/software:frameworks...
R execute script/function during installation
r,installation,rstudio,devtools
Scripts to be run before installation should be placed in an executable file called configure (will be executed on Linux/Unix/Mac computers) or in a file called configure.win (will be executed in Windows computers).
Multiple true condition in ifelse command
This works: a <- "01" ifelse(a=="01", d <- c(sum(b),sum(c)), d <- 0) d #[1] 21 2616 a <- "02" ifelse(a=="01", d <- c(sum(b),sum(c)), d <-0) d #[1] 0 ...
How to interact with websocket from within R
I had a similar question a while back and it was confirmed to me by Joe Cheng (maintainer of httpuv) that httpuv is a websocket server only. That still seems to be true with httpuv 1.3.2 dated 2014-10-22.
Is it possible to schedule a script to run automatically in RStudio server? [duplicate]
If you have shell and CRON access on the server you can accomplish this via a crontab entry like this: 0 7 * * mon /usr/bin/Rscript $HOME/scriptname.R >> $HOME/tmp/out 2>&1 This is lightly modified from one I use. This example would run your script at 7am each Monday....
finding rows which don't have NA in a particular column if it already didn't have any NA
The problem is not limited to NAs. It happens if the indexing vector is empty. The hope is that the whole vector will be returned, but actually, x[numeric(0)] (x indexed by a vector of length 0) returns an empty vector. For example, consider the following: > df[ c(-1), ] #...
Save View() output of RStudio as html
Maybe your data looks like the mtcars data data(mtcars) View(mtcars) library(xtable) sink command sends output to a file sink('somehtmlfile.html') print(xtable(mtcars),type='html') then return things back to normal with sink() now check the somehtmlfile.html in a browser...
savePlot() error message in R: can only copy from 'windows' devices
You can use png function. For example: png(filename = "testPlot.png", width = 480, height = 480) plot(1:10, type = 'l') dev.off() In filename you should define the path to the plot. ...
Plot a histogram of means and label individual mean/PDF
Here are two ways of adding a label. First, some random data and the regular histogram: set.seed(0) means <- rnorm(1000, 4.5, 0.2) hist(means) One way to add what you want is plot one point where you want, using points() points(x=means[1], y=0, pch="X", cex=1.5) Use y for the vertical position, pch...
RStudio internal PDF viewer
In RStudio 0.98, the internal viewer wasn't available on all platforms. We have, however, recently enabled it on Linux in RStudio 0.99. If you'd like to try it, you can download a preview release here: http://www.rstudio.com/products/rstudio/download/preview/...
Rmarkdown directing output file into a directory
You could try setting the out_dir variable in the function you are giving knit to render: knit: (function(inputFile, encoding) { out_dir <- 'test'; rmarkdown::render(inputFile, encoding=encoding, output_file=file.path(dirname(inputFile), out_dir, 'analysis.html')) }) ...
How do I put multiple boxplots in the same graph in R?
r,plot,ggplot2,rstudio,boxplot
ggplot2 requires that your data to be plotted on the y-axis are all in one column. Here is an example: set.seed(1) df <- data.frame( value = runif(810,0,6), group = 1:9 ) df library(ggplot2) ggplot(df, aes(factor(group), value)) + geom_boxplot() + coord_cartesian(ylim = c(0,6) The ylim(0,6) sets the y-axis to be between...
What programming language was RStudio written in?
It's a mix. The user interface is indeed based on web technology and is written primarily in Java, using GWT to transpile to JavaScript; the back end is mostly C++. The source is hosted on GitHub, where you can see auto-generated language stats: ...
Is there any way to disable environment pane in RStudio?
I can reproduce the problem with lots of small nested list variables. # Populate global environment with lots of nested list variables invisible( replicate( 1000, assign( paste0(sample(letters, 10, replace = TRUE), collapse = ""), list(a = 1, b = list(ba = 2.1, bb = list(bba = 2.21, bbb = 2.22))),...
Increasing font size in RStudio
Ctrl++, and Ctrl+- More keys might be necessary to generate +/- (for instance, for me Zoom In is Ctrl+Shift+=). Other notes: You can also zoom in using the View menu See a list of keyboard shortcuts with Alt+Shift+K (recent versions of RStudio only) ...
Is there a way to have a barplot and a stacked barplot on the same graph using barplot or ggplot?
Using ggplot, I would do something like one of these. They plot the two sets of data separately. The first arranges the data into one dataframe, then uses facet_wrap() to position the plots side-by-side. The second generates the two plot objects separately, then combines the two plots and the legend...
RQDA batch file import not working
I needed to set a different file title for every file before it would import correctly
How to create venn diagram in R studio from group of three frequency column
Here's one way to do it using the package venneuler: df <- read.table(header = TRUE, text = "user has_1 has_2 has_3 3431 true false true 3432 false true false 3433 true false false 3434 true false false 3435 true false false 3436 true false false", colClasses = c("numeric", rep("logical", 3)))...
Converting non-standard file to .csv in R
r,file,csv,rstudio,file-conversion
Say you have a space separated file: name grade percent john 1 0.3 brian 2 0.25 joshua 5 1.1 You can specify a delimeter for read.csv: > read.csv("test.ssv", sep=" ") name grade percent 1 john 1 0.30 2 brian 2 0.25 3 joshua 5 1.10 Also, fread from the data.table...
RStudio character encoding issue: quotation marks replaced by \x92
r,character-encoding,rstudio,rstudio-server
I just found a solution so I am answering my own question: Somehow my attempts to set the encoding via the global options menu in RStudio server did not have any impact on read.csv (I thought it was supposed to use the encoding specified in the global options by default...
Errors while installing Rstudio
Package libjpeg62 is not installed. You can get it by typing this in Terminal: sudo apt-get install libjpeg62 ...
increasing number of members in a list causes working list to not work
It seems that having very long lines causes problems with the interpreter. I couldn't say exactly why and what is the limit, but breaking the lines into several lines solves the problem: req <- list( Inputs = list( "input1" = list( "ColumnNames" = list("Column 0", "X", "AGE", "FEMALE", "LOS", "NCHRONIC",...
Show and report function outputs in “R” programming language
In your example, it is all stored in pc. If you are in interactive mode, just type pc$sdev and pc$loading to see what they contain. > pc$sdev Comp.1 Comp.2 2.425413 1.346727 > pc$loadings Loadings: Comp.1 Comp.2 V1 0.972 0.153 V2 -0.201 0.447 V3 -0.130 V4 -0.211 V5 0.739 V6 -0.109...
Error with new R 3.1.3 version
Update to RStudio version 0.98.1103, it's available (even if it says in RStudio's updater that there's not a newer version available).
In “R” iterate over specific columns
r,loops,for-loop,rstudio,lapply
This seems simple enough. I didn't test as we weren't given data but you should get the gist. myFun<-function(col) { myDF$multiple[grep(" Mbps",myDF[,col])] <- 1000000 myDF[,col] <- gsub(" Mbps","",myDF[,col]) myDF$multiple[grep(" Kbps",myDF[,col])] <- 1000 myDF[,col] <- gsub(" Kbps","",myDF[,col]) myDF$multiple[grep(" bps",myDF[,col])] <- 1 myDF[,col] <- gsub(" bps","",myDF[,col]) myDF[,col] <- as.numeric(myDF[,col]) * myDF$multiple }...
Extracting text after “?” in R
str_match is more helpful in this situation str_match(x, ".*\\?\\s(.*)")[, 2] #[1] "Michael Sneider" ...
RStudio R File Corruption
It's not clear what happened to corrupt your file (and thus how to fix it if possible) and it is kind of ominous that you're just seeing 0's in other text editors, but I'll give you my best suggestion and some tips. Suggestions for Attempting Recovery Since your other R...
Rstudio 0.98.1028 add background image only to title slide
You're 99% of the way there. Just one or two more tweaks and you'll have it. You may consider adding the following to ensure your slides are using the separate css file with something like the following added to your title slide. Intro ====== author: Clever Name css: css-file.css You...
Running R and RStudio on Dropbox [duplicate]
Sounds like there are two separate aspects to your question: Can you share the R & RStudio application/executables Can you share the R scripts/project documents Regarding 1, to share the application/executables, you could follow the portable Rstudio approach from @hrbrmstr. That's going to require you providing the correct versions for...
Connecting RStudio with Remote R machine
One solution is to install RStudio Server on that machine (Linux) and then access RStudio Server by pointing your web browser to <IP ADDRESS>:8787.
R View() function does not show data frame
The View function is from package 'utils' which is not supported by the version of R you are using.
Render R Presentation from the command line
r,markdown,rstudio,knitr,slidify
I asked this question in on RStudio Support Community page, and the 'official' answer was no. A colleague looked at the code on github and verified the method is only called from the drop down UI. Looks like to do this you would have to actually compile your own wrapper.
What's the difference in using a semicolon or explicit new line in R code
At the console, the script is evaluated as soon as the a line ends with a complete statement. Hence, this: temp_a temp_b <- 1 temp_c <- 2 is equivelent to calling this: source(textConnection('temp_a')) source(textConnection('temp_b <- 1')) source(textConnection('temp_c <- 2')) in which each line is evaluated as soon as it is...
Is there an Rstudio keyboard shortcut to open up the file that contains the source code to a function you've written?
If you are within a package then F2 will navigate to the source file of functions defined within that package (it would be nice if you could also go to other packages but that doesn't work yet). You can also use Ctrl+. to do a typeahead search of all functions...
How to restrict Shiny fileInput to text files only?
As far as I understand, that's the right way to do it. If you view your app in the RStudio viewer it wouldn't do anything, but in a browser it should. I'm using Chrome and I just ran that code and it did in fact only show me txt and...
convert NA in a column of class factor to 0
If you use df$col2 <- addNA(df$col2) you will get a new level 'NA' to the factor....
How to read every .csv file in R and export them into single large file
You can use lapply to read all the files, clean and format them, and store the resulting data frames in a list. Then use do.call to combine all of the data frames into single large data frame. # Get vector of files names to read files.to.load = list.files(pattern="csv$") # Read...
Split the title onto multiple lines?
For an HTML output just us the <br> tag while if your output is a PDF or PDF presentation standard LaTeX code to break line given by \\ should work. Example --- title: 'A title I want to <br> split on two lines' author: date: output: ioslides_presentation --- For PDF...
Setting work directory in knitr using opts_chunk$set(root.dir = …) doesn't work
It is knitr::opts_knit instead of knitr::opts_chunk.
Shiny + GGplot - mouse click coordinates
I find a way to resolve: imagens and codes: https://github.com/faustobranco/StackQuestions library(shiny) library(ggplot2) ui <- fluidPage( plotOutput("plot", click = "plot_click"), verbatimTextOutput("info") ) server <- function(input, output, session) { output$plot <- renderPlot({ ggplot(cars, aes(speed, dist)) + geom_bar(stat="identity") }) output$info <- renderText({ xy_str <- function(e) { if(is.null(e)) return("NULL\n") paste0("x=", round(e$x, 1), "\n") }...