tile plot with var names

tileplot.R

require(ggplot2)

tileplot <- function(mat)
{
  mat = data.frame(mat)
  mat$Var1 = factor(rownames(mat), levels=rownames(mat)) ## preserve rowname order
  melted_mat <- gather(mat,key=Var2,value=value,-Var1)
  melted_mat$Var2 = factor(melted_mat$Var2, levels=colnames(mat)) ## preserve colname order
  rango = range(melted_mat$value)
  pp <- ggplot(melted_mat,aes(x=Var1,y=Var2,fill=value)) + geom_tile() ##+scale_fill_gradientn(colours = c("#C00000", "#FF0000", "#FF8080", "#FFC0C0", "#FFFFFF", "#C0C0FF", "#8080FF", "#0000FF", "#0000C0"), limit = c(-1,1))
  
  print(pp)
}

## vertial x labels
tileplot2 <- function(mat)
{
  mat = data.frame(mat)
  mat$Var1 = factor(rownames(mat), levels=rownames(mat)) ## preserve rowname order
  melted_mat <- gather(mat,key=Var2,value=value,-Var1)
  melted_mat$Var2 = factor(melted_mat$Var2, levels=colnames(mat)) ## preserve colname order
  rango = range(melted_mat$value)
  pp <- ggplot(melted_mat,aes(x=Var1,y=Var2,fill=value)) + geom_tile() + ##+scale_fill_gradientn(colours = c("#C00000", "#FF0000", "#FF8080", "#FFC0C0", "#FFFFFF", "#C0C0FF", "#8080FF", "#0000FF", "#0000C0"), limit = c(-1,1))
   theme(axis.text.x = element_text(angle = 90, vjust = 1, lineheight = 10,
                                      hjust = 1),
          axis.text.y = element_text(vjust = 0,
                                     hjust = 1),
           axis.title.x = element_blank(),
           axis.title.y = element_blank()
          , axis.ticks = element_blank()
    )
  print(pp)
}

##tileplot <- function(mat,orden)
##{
##  mat = data.frame(mat)
##  mat$Var1 = rownames(mat)
##  melted_mat <- gather(mat,key=Var2,value=value,-Var1)
##  rango = range(melted_mat$value)
##  pp <- ggplot(melted_mat,aes(x=Var1,y=Var2,fill=value)) + geom_tile() ##+ scale_fill_gradientn(colours = c("#C00000", "#FF0000", "#FF8080", "#FFC0C0", "#FFFFFF", "#C0C0FF", "#8080FF", "#0000FF", "#0000C0"), limit = c(-1,1))
##  print(pp)
##}




##require(reshape2)
##require(ggplot2)
##tileplot <- function(mat)
##{
##  melted_mat <- melt(mat)
##  pp <- ggplot(melted_mat,aes(x=Var1,y=Var2,fill=value)) + geom_tile()
##  print(pp)
##}