[R] grid.table + splom: how to nicely align panel entries

[baptiste auguie]

Try this,

align.digits = function(l)
{

sp <- strsplit(as.character(l), "\\.")
chars <- sapply(sp, function(x) nchar(x)[1])
n = max(chars) - chars
l0 = sapply(n, function(x) paste(rep("0", x), collapse=""))
labels = sapply(seq_along(sp), function(i) {
  point <- if(is.na(sp[[i]][2])) NULL else quote(.)
  as.expression(bquote(phantom(.(l0[i])) * .(sp[[i]][1])*
.(point)*.(sp[[i]][2]) ))})

return(labels)
}


library(gridExtra)

d <- align.digits(l = c(125.3, 1.23444444, 12))
grid.newpage()
grid.table(d, parse=T, core.just="left", gpar.coretext=gpar(cex=0.5))

HTH,

baptiste

On 21 April 2011 03:07, Marius Hofert <m_hofert at web.de> wrote:
> Dear Baptiste,
>
> very nice, indeed!
>
> Two minor issues that remain, are:
> (1) I tried to omit the decimal dot for those numbers that do not have digits
>    after the decimal dot. But somehow it does not work...
> (2) Do you know how one can decrease the text size for the text appearing in the
>    lower panel? I tried to work with "cex=0.5"... but it was ignored all the time.
>
> Cheers,
>
> Marius
>
>
> library(lattice)
> library(grid)
> library(gridExtra)
>
> ## function for correct digit alignment
> align.digits <- function(l){
>    sp <- strsplit(as.character(l), "\\.")
>    chars <- sapply(sp, function(x) nchar(x)[1])
>    n <- max(chars)-chars
>    l0 <- sapply(n, function(x) paste(rep("0", x), collapse=""))
>    sapply(seq_along(sp), function(i){
>        if(length(sp[[1]])==1){
>            as.expression(bquote(phantom(.(l0[i])) * .(sp[[i]][1])))
>        }else{
>            as.expression(bquote(phantom(.(l0[i])) * .(sp[[i]][1])*.*.(sp[[i]][2])))
>        }
>    })
> }
>
> ## splom with customized lower.panel
> ## x: data
> ## arr: array of containing expressions which are plotted in a grid table in the
> ##      lower panel (i,j)]
> splom2 <- function(x, arr, nr){
>    ## function for creating table
>    table.fun <- function(vec){ # vector containing lines for table for *one* panel
>        grid.table(matrix(vec, nrow=nr, byrow=TRUE),
>                   parse=TRUE, # parse labels as expressions
>                   theme=theme.list(
>                   gpar.corefill=gpar(fill=NA, col=NA), # make bg transparent
>                   core.just="left", padding.h=unit(0,"mm")) # justification of labels
>                   )
>    }
>    ## splom
>    splom(x, varname.cex=1.2,
>          superpanel=function(z, ...){
>              panel.pairs(z, upper.panel=panel.splom, lower.panel=function(i,j){
>                  table.fun(arr[i,j,])
>              }, ...)
>          })
> }
>
> ## create data and array of expressions
> d <- 4
> x <- matrix(runif(d*1000), ncol=d) # data to be plotted with splom
> nr <- 3 # number of rows for the panel entries
> nc <- 3 # number of cols for the panel entries
> arr <- array(list(rep(NA,nr*nc)), dim=c(d,d,nr*nc), dimnames=c("i","j","val")) # array containing the table entries per panel
> f <- function(i,j) (i+j)*10 # dummy function
> eq <- "phantom()==phantom()"
> for(i in 1:d){
>    for(j in 1:d){
>        numbers <- align.digits(c(round(pi,4), round(pi, 6), f(i,j)))
>        arr[i,j,] <- c("alpha", eq, numbers[1],
>                       "italic(bbb)", eq, numbers[2],
>                       "gamma", eq, numbers[3])
>    }
> }
>
> ## plot
> splom2(x, arr, nr=3)
>
>
> On 2011-04-20, at 11:56 , baptiste auguie wrote:
>
>> On 20 April 2011 21:16, Marius Hofert <m_hofert at web.de> wrote:
>>> Dear expeRts,
>>>
>>> is there a way to get the entries in each panel correctly aligned according to the
>>> equality signs?
>>>
>>> Here is the "wish-list":
>>> (1) the equality signs in each panel should be vertically aligned
>>
>> You can put the equal signs in their own column,
>>
>> library(gridExtra)
>> d = matrix(c("italic(a)", "phantom()==phantom()", round(pi,4),
>> "italic(b)", "phantom()==phantom()", round(pi,6)), ncol=3, byrow=T)
>> grid.table(d, parse=T,theme=theme.list(core.just="left"))
>>
>>> (2) the numbers should be aligned on the decimal point
>>
>> You could place some phantom()s to do this,
>>
>> align.digits = function(l)
>> {
>>
>> sp <- strsplit(as.character(l), "\\.")
>> chars <- sapply(sp, function(x) nchar(x)[1])
>> n = max(chars) - chars
>> l0 = sapply(n, function(x) paste(rep("0", x), collapse=""))
>> labels = sapply(seq_along(sp), function(i) {
>>  as.expression(bquote(phantom(.(l0[i])) * .(sp[[i]][1])*.*.(sp[[i]][2])))})
>>
>> return(labels)
>> }
>>
>> library(gridExtra)
>>
>> d <- align.digits(l = c(125.3, 1.23444444))
>> grid.table(d, parse=T,core.just="left")
>>
>> HTH,
>>
>> baptiste
>>
>>> One could adjust the phantom()-arguments by hand to achieve (1), but is there a
>>> simpler solution? For (2) I have no idea.
>>>
>>> Cheers,
>>>
>>> Marius
>>>
>>>
>>> library(lattice)
>>> library(grid)
>>> library(gridExtra)
>>>
>>> ## splom with customized lower.panel
>>> ## x: data
>>> ## arr: array of containing expressions which are plotted in a grid table in the
>>> ##      lower panel (i,j)]
>>> splom2 <- function(x, arr){
>>>    ## function for creating table
>>>    table.fun <- function(vec){ # vector containing lines for table for *one* panel
>>>        grid.table(matrix(vec, ncol=2, byrow=TRUE),
>>>                   parse=TRUE, # parse labels as expressions
>>>                   theme=theme.list(
>>>                   gpar.corefill=gpar(fill=NA, col=NA), # make bg transparent
>>>                   core.just="left", padding.h=unit(0,"mm")) # justification of labels
>>>                   )
>>>    }
>>>    ## splom
>>>    splom(x, varname.cex=1.4,
>>>          superpanel=function(z, ...){
>>>              panel.pairs(z, upper.panel=panel.splom, lower.panel=function(i,j){
>>>                  table.fun(arr[i,j,])
>>>              }, ...)
>>>          })
>>> }
>>>
>>> ## create data and array of expressions
>>> d <- 4
>>> x <- matrix(runif(d*1000), ncol=d) # data to be plotted with splom
>>> arr <- array(list(rep(NA, 3*2)), dim=c(d,d,3*2), dimnames=c("i","j","val")) # array containing the table entries per panel
>>> f <- function(i,j) (i+j)*10+0.1 # dummy function
>>> for(i in 1:d){
>>>    for(j in 1:d){
>>>        arr[i,j,] <- c("alpha==phantom()", round(pi,4),
>>>                       "italic(bbb)==phantom()", round(pi,6),
>>>                       "gamma==phantom()", f(i,j))
>>>    }
>>> }
>>>
>>> ## plot
>>> splom2(x, arr)
>>>
>>> ______________________________________________
>>> R-help at r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>