Category "alpha"

How to make alpha (transparency) appear as continuous gradient in the ggplot legend?

Is it possible to make the transparency (alpha) appear as a continuous gradient in the ggplot legend? Currently, the plot looks like this: Here, the different

R: Lack of cronbach's alpha information

I am trying to calculate Cronbach alpha for an index of 5 different survey question. They are scaled identically, 0-10. I have created a matrix with the variabl

Transparency for windows forms textbox

I'm using windows forms in C# and I need to make a textbox's background color transparent. I have a trackbar that goes from 0 to 255 that is supposed to control