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Hello, I have a data set of about 300.000 measurements made by an STM which should apporximately fix a normal (Gaussian) distribution. I have imported the data in R and used plot(density()) to get a nice plot of the distribution which in fact looks like a real Gaussian. However, the integral over the surface is not equal to one (I know since some of the plots extend to numbers greater then 1). Is

Hi, I have processed measurements of a rough surface to a heigh-height correlation plot. What the meaning of this exactly is, is not important. Only that it is a plot that had two (almost ) linear parts when plotted on a logaritmic scale. In this plot, I want to draw the best fitting lines for these linear parts but I just can't get it done. It is easy when the scales are linear but as you

...)), na.rm = TRUE), dim(mat1)) [,1] [,2] [,3] [,4] [,5] [1,] 1.5 2.5 3.5 4.5 5.5 [2,] 6.0 7.0 8.0 9.0 10.0 [3,] 6.0 7.0 8.0 9.0 10.0 ? HTH, Marc Schwartz ------------------------------ Message: 62 Date: Wed, 21 Nov 2007 21:37:37 +0100 From: "Joren Heit" <jorenheit at gmail.com> Subject: [R] fitting a line to a logaritmic plot To: r-help at r-project.org Message-ID: <1ec68d8f0711211237j6c4787ecy8511624bf51608b7 at mail.gmail.com> Content-Type: text/plain Hi, I have processed measurements of a rough surface to a heigh-height correlation plot. Wh...