search for: stratigraphic

Ladies and Gentlemen, The first public (beta) release of the package stratigraph is now available on CRAN: http://cran.r-project.org/web/packages/stratigraph/index.html It includes tools for plotting pollen diagrams, an implementation of an evolutionary algorithm for drawing stratigraphic lines of correlation, and several other functions for the analysis and plotting of geological, biological, ecological, and paleontological data distributed through time or stratigraphic depth. There are still some problems with the windows binary, which will be resolved shortly, but a source i...

Ladies and Gentlemen, The first public (beta) release of the package stratigraph is now available on CRAN: http://cran.r-project.org/web/packages/stratigraph/index.html It includes tools for plotting pollen diagrams, an implementation of an evolutionary algorithm for drawing stratigraphic lines of correlation, and several other functions for the analysis and plotting of geological, biological, ecological, and paleontological data distributed through time or stratigraphic depth. There are still some problems with the windows binary, which will be resolved shortly, but a source i...

Hi All, I am looking for help in rotating species titles produced using the strat.plot( ) function in the rioja package. This function produces a stratigraphic plot of paleoenvironmental data. Currently the titles of each species are plotted vertically while they are typically plotted at a 45 degree angle in other programs. Does anyone have any idea of how to rotates these titles? Below is an example plot (taken from the rioja help file) made the funct...

Hello everyone I have problem with axis labels on graphs, I have my code as below: plot(0,0,xlim=c(1,ncol(PA)),ylim=c(1,nrow(PA)),main="Stratigraphic Range",xlab="Time Bins",ylab="Taxa",cex.axis=1.5,cex.lab=2,cex.main=2.5,mgp=c(5,1.5,0),xaxt="n") text(1:(length(strat_name)), y= 0, adj=1, srt=45,labels=strat_name,xpd=TRUE, cex=1) #adds text to x axis giving the strat names abline(v=(1:ncol(PA))+.5,col=...

...eriods (1 year intervals, 2 year intervals, etc.) and then plot several of the histograms/barplots in a series of figures to show how differing resolution changes the pattern. I have calculated the counts manually, but I can't just pipe the raw data into hist due to its weirdness (species stratigraphic ranges). Basically I want a scatterplot to plot x,y data points, except with vertical bars instead of points. I've tried hacking hist() but so far without luck. Any help greatly appreciated! Nick -- ==================================================== Nicholas J. Matzke Ph.D. Student, G...

Dear List, I have been writing a Lattice function to draw what we call stratigraphic diagrams, these are diagrams with a panel for each species showing a time series of abundance, but drawn vertically to represent time passing from bottom of plot towards to top. I am most of the way there with this now, but I want to do away with the strip on each panel and instead draw a custom t...

Dear List, I am thinking about ways in which I might analyse some stratigraphic data. The nature of the data series I have generates a number of issues: 1) The data I have in mind come from a sediment core sequence taken from the bottom of a lake. The sequence is sliced into a priori defined slices, in this case 0.2cm per slice. in this way a sequence of 0.2cm slices is p...

I just detected R and have, after browsing the manual, one question: I look for quite a lot of time for graphical software which allows to plot data from a table or external file _with the axes of the coordinate system changed_, i.e. the x-axis should run from top left to bottom left, and the y-axis from top-left to top-right. It is of no use to interchange the rows in the table, the

...Dalenius and Hodges and the geometric rule of Gunning and Horgan are also implemented. * stratigraph (0.61) Walton A. Green http://crantastic.org/packages/stratigraph A collection of tools for plotting and analyzing paleontological and geological data distributed through through time in stratigraphic cores or sections. Includes some miscellaneous functions for handling other kinds of palaeontological and paleoecological data. * survPresmooth (1.0) Ignacio Lopez-de-Ullibarri http://crantastic.org/packages/survPresmooth Compute presmoothed versions of estimators of survival, density,...