Nothing
html_grid <- function(x,title="",max_width=80,...){
x <- as.matrix(x)
n <- nchar(x)
x[n>max_width] <- paste0(substr(x[n>max_width],start=1,stop=max_width),"...")
tbody <- paste0("<td>",x,"</td>")
dim(tbody) <- dim(x)
tbody <- apply(tbody,1,paste0,collapse="")
tbody <- paste0("<tr>",tbody,"</tr>")
tbody <- c("<tbody>",tbody,"</tbody>")
thead <- paste0("<th>",colnames(x),"</th>")
thead <- paste0(thead,collapse="")
thead <- paste0("<tr>",thead,"</tr>")
thead <- c("<thead>",thead,"</thead>")
table <- c(thead,tbody)
table <- c("<table>",table,"</table>")
style <- c("table { border: 0.5px solid #555; border-collapse:collapse; position: relative; }",
"thead { background-color: #ddd; border: 0.5px solid #555; }",
"td { border: 0.5px solid #555; text-align: right; padding: 3px; white-space: nowrap; }",
"th { border: 0.5px solid #555; text-align: center; padding: 3px;
background-color: #ddd; position: sticky; top: 0;}",
"body { margin: 0; }")
style <- paste(style,collapse="\n")
style <- c("<style>",style,"</style>")
title <- paste0("<title>",title,"</title>")
head <- c("<head>",title,style,"</head>")
body <- c("<body>",table,"</body>")
html <- c("<html>",head,body,"</html>")
structure(html,class="raw_html")
}
view_html <- function(x,title=deparse(substitute(x)),output,...){
ht <- html_grid(x,title,...)
if(interactive()){
# Test whether running under RStudio
isRStudio <- Sys.getenv("RSTUDIO") == "1"
if(isRStudio)
deflt.output <- "file-show"
else
deflt.output <- "browser"
}
else
deflt.output <- "stdout"
if(missing(output))
output <- getOption("html_viewer",deflt.output)
if(mode(output)=="character")
output <- match.arg(output,c("stdout","browser","file-show"))
else if(!is.function(output))
stop("'output' should be either a character string of a function")
if(is.function(output)){
tf <- file.path(tempdir(),title)
tf <- paste0(tf,".html")
cat(ht,file=tf)
output(tf)
}
else if(nzchar(Sys.getenv("JPY_PARENT_PID"))){
## Inside Jupyter
return(html_div(ht))
}
else if(output=="stdout") cat(ht)
else {
tf <- file.path(tempdir(),title)
tf <- paste0(tf,".html")
cat(ht,file=tf)
if(output=="file-show")
file.show(tf,title=deparse(substitute(x)))
else
browseURL(tf)
}
}
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