plotGenes: Simple function to plot gene expression
In january3/myfuncs: loads a few functions I often need

Simple function to plot individual gene expression for a number of genes

plotGenes(x, center = TRUE, scale = TRUE, labels = NULL,
  xval = NULL, sel = NULL, aveby = NULL, xlim = NULL,
  ylim = NULL, col = "#33333366", sdcol = NULL, lwd = 1,
  add = FALSE, las = 2, genelabels = rownames(x), debug = FALSE,
  xlab = "", ylab = "", hline = 0, vlines = T, ...)

`x`	A matrix containing gene expression data (row-wise: genes; col-wise: samples)
`center`	Whether gene expressions should be centered to mean= 0
`scale`	Whether gene expressions should be scaled to sd= 1
`labels`	Labels for the x-axis
`xval`	Values for the x-axis
`sel`	Selection of rows from the matrix to display
`aveby`	If there are replicates that should be averaged before plotting, this vector should contain IDs unique for a batch, but identical between replicates in a batch, of length equal to number of columns in `x`
`xlim, ylim`	limits for x- and y- axes
`col`	default color to use in plotting
`sdcol`	color used to plot the standard deviations if `aveby` is not NULL
`lwd`	default line width to use in plotting
`add`	Whether the existing plot should be updated rather than replaced
`las`	use las=2 to make sure x-axis labels are vertical
`genelabels`	labels shown on the left for each gene plotted. Must have a length equal to number of rows in `x`.
`debug`	Switch on debugging
`xlab`	Label for the x axis
`ylab`	Label for the y axis
`hline`	Whether a grey line should be drawn at h=0
`vlines`	Whether grey vertical lines should be drawn at each sample
`...`	Additional parameters will be passed to `plot`