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.bdcalcsizes <- function(paper=bdp()$paper,mfrow=c(1,1),scaleheight=1)
  {

    ## scaleheight is kind of a hack. We need to be able to the height
    ## without using mfrow. This is for sharing the x axis between
    ## plots.
    
    prm <- bdp()
    paperpars <- prm[[paper]]
### columns, half, quadratic er levn fra et gammelt hack. skal erstattes med skabeloner.
###    columns <- 1
###    half <- FALSE
###    quadratic <- FALSE

### first, the height
    ## should switch be used?
    if(any(mfrow<1)){
      stop("Both elements in bdp()$mfrow must be positive. Exiting...")
    }

    if(mfrow[1]*scaleheight<=4){    
      bdp(height=mfrow[1]*scaleheight*paperpars$height)    
    } else {
      bdp(height=paperpars$height.full)
    }
    
### then the width
      bdp(width=paperpars$width)
      bdp(size.unit=paperpars$size.unit)
    
    
  }

## ### first, the height
##     if(mfrow[1]==1){
##       bdp(height=paperpars$height)
##     } else if(mfrow[1]<4){
## #### en graf fylder 1/3, 4 graf fylder det hele
##       r <- (3/4)^(1/3)
##       bdp(height=mfrow[1]*1/3*paperpars$height.full*r^(mfrow[1]-1))
##     } else {
##       bdp(height=paperpars$height.full)
##     }