NMFimage2df: ggplot2 dataframe from NMF image data
In richardbeare/pNMF: Projective non-negative matrix factorization

Description Usage Arguments Details Value Examples

View source: R/data.R

ggplot2 dataframe from NMF image data

1	NMFimage2df(nmfimage, rs, cs)

`nmfimage`	- data for NMF - each row is an image
`rs`	- number of rows in each image
`cs`	- number of cols in each image

transform a typical basis data frame to something that can be displayed as images with ggplot2. Each image is a row and the dimensions need to be passed in.

data frame for use with ggplot2

data(faces)
j<-NMFimage2df(faces, 32, 32)
ggplot(filter(j, ID <= 16), aes(x=Var2, y=33-Var1, fill=Brightness)) +
geom_tile() + facet_wrap(~ID) + scale_fill_gradient(low="black", high="white")