search for: contemporarily

...rr <- hist(y, breaks = brks, plot = FALSE,probability=probability) with: ll <- hist(x, breaks = brks, plot = FALSE) rr <- hist(y, breaks = brks, plot = FALSE) The problem -- i guess -- is generated by the call to hist() which judges "incompatible" setting plot = FALSE and contemporarily specifying the probability argument. In fact, the description of plot argument in hist() function is as follows: plot logical. If TRUE (default), a histogram is plotted, otherwise a list of breaks and counts is returned. In the latter case, a warning is used if (typically graphical) arguments ar...