Search Archives

An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20100107/daeccb33/attachment.pl>

An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20091204/d0dc4c7d/attachment-0001.pl>

Dear all, I am a very new user to R (for windows) (since Monday!) so please excuse me if I am asking an obvious question! I am experiencing some problems with the graphics window - in short, it keeps disappearing. i...

Hi all, I'm using spatstat to investigate the spatial structure of an arid shrub population. The first-order intensity of my data does not appear to be homogenous, so I would like to use inhomogeneous techniques. I realise there...

Hi, I have several datasets recording the size of individuals shrubs. I would like to test various distribution functions to see which fits my data most closely. So far I have used the fitdistr tool in the MASS package to...

Dear All, I have two questions regarding distribution fitting. I have several datasets, all left-truncated at x=1, that I am attempting to fit distributions to (lognormal, weibull and exponential). I had been using fitdistr in the MASS package...

Hi, No the output isn't the same as the original spatstat output, I changed it from scientific to numerical notation in excel. I realised last night that it was probably a rounding issue and have just performed the same...

Hi, Thank you very much for your reply. This seems to be working OK when fitting weibull and lognormal distributions. However, fitdistr now requires me to include start values: > ltwei<-function(x,shape,scale,log=FALSE){ + dweibull(x,shape,scale...

Hi all, I am using quadratcount in spatstat to divide a window containing a point pattern into a grid of quadrats containing the intensity of points in each quadrat. My data is in UTM co-ordinates. My window is defined...