The great thing of R, is that the number of available resources on the web is increasing dramatically. If you cannot afford expensive books, or you are looking straight questions or some tutorials you will find almost anything you need. Here's my short... [Read more...]

I often have to to plot multiple time-series with different scale of values for comparative purposes, and although placing them in different rows are useful, placing on a same graph is still useful sometimes...I searched a bit about this, and found som... [Read more...]

I've been running for the last couple of months a lot of simulations written in R on legion cluster  here at UCL. But I still do many things on our quad-core server here at the institute, and parallelising the simulations is extremely handy.S... [Read more...]

I know know...I've been away again...We (myself and Mark Lake) are presenting a paper at the CECD conference and we have still some to stuff to finish...so I'm really, really busy... I'll post asap a much more detailed post on the conference and o... [Read more...]

Yes...I haven't been updating the blog for a very long while...But I'm really busy with many things right know.... Our paper for the "Cultural Evolution in Spatially Structured Populations" have been accepted so we are currently working on that, and I ... [Read more...]

I'm really a heavy user of R and was so much before starting to do any agent based models. So the first thing I was looking in any software package for ABM was some automated link to R (much like spgrass6 for GRASS and R for GIS).  I thought  Repast ... [Read more...]

I've been working mainly on abstract ABM, and I really don't need all that bells and whistles, and besides I've had some problems when trying to handle the relation between the real coordinate system and NetLogo own system. What I want is to use a GIS ... [Read more...]