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Dear all, I am a beginner with R (and also with the statistics) for which I hope to be clear. I should do this non-parametric test on data I extracted from maps. In practice I have a column that...

Dear all, I am a beginner with R (and also with the statistics) for which I hope to be clear. I should do this non-parametric test on data I extracted from maps. In practice I have a column that...

Dear R list I am looking for a function in R that computes the integration of a discrete curve, such as a power spectrum, in a specified interval (in my case, that would be 'power in a certain frequency band...

Guys, I've noticed a small problem in PerformanceAnalytics, Return.excess does not like timeseries with only 1 elements. Obviously this situation does not happen often, but getting around the issue is rather unelegant: Loading required package: PerformanceAnalytics Package PerformanceAnalytics...

Ciao Gabriele, you can find a shorter yet very useful descriptions of how spatial classes work in one of the vignettes of the sp-package. To visualize that, simply write on R terminal > vignette("intro_sp") this will open a...

Martin Ivanov wrote > > .... > As an alternative, is it possible to fill the regions between the > contour lines in the following plot: > levelplot(volcano, at=heights, col.regions=terrain.colors(6), > contour=TRUE, region=FALSE) > without plotting the contourlines themselves? > ... > well...

I am using the function apply.weekly() from the xts package and I realized that for the program the week starts Tuesday. So for instance, with a series like this: Close 2006-07-03 36666.00 2006-07-04 36738...

Hi, I'm trying to apply a supervised regression following the example at https://mlr3spatial.mlr-org.com/articles/mlr3spatial.html In my case the response variable is a presence-absence (0/1) raster file with many NA values task...

> There seems to be referring to two different things here: > > 1. It drops a dimension if the input is a zoo matrix with one column > and na.rm = TRUE. That is a bug in na.trim. Its fixed in the...

Hi all I am running a 2-way repeated measure anova with 1 between-subjects factor (Group=treatment, control), and 1 within-subject factor (Time of measurement: time1, time2). I extract the results of the anova with: summary(aov(effect...

Hi, I'm trying to customize xlabel and relative ticks for a raster plot library(raster) raster=raster(matrix(runif(100))) plot(raster , xlab="" , ylab="" , yaxt="n" , xaxt="n" , xpd=NA ) using axis(side = 1, tck = -0.1, xpd=NA...

Dear Colleagues, there are few seats left for the *"GEO-OPEN-HACK-2024: Big Geospatial Data Hackathon with Open Infrastructure and Tools (advance level)" *( https://iiasa.ac.at/events/jun-2024/geo-open-hack-2024 -big-geospatial-data-hackathon-with...

Hi all I am running a 2-way repeated measure anova with 1 between-subjects factor (Group=treatment, control), and 1 within-subject factor (Time of measurement: time1, time2). I extract the results of the anova with: summary(aov(effect...

Dear R users I have a really simple question (hoping for a really simple answer :-): Having estimated the spectral density of a time series "x" (heart rate data) with: x.pgram <- spectrum(x,method="pgram") I would like to compute...

Dear all, I have a BIG dissimilarity matrix (around one thousand by one thousand), that I would like to cluster. Most of the elements of the matrix are zero or close to zero. Is there a way to cluster the...

Hi all I will repost this since it seems to me such a common problem and I couldn't find any solution in the mail list... I am running a 2-way repeated measure anova with 1 between-subjects factor...

Dear R-users, I want to plot boxplots of a single variable collected a few times during almost one year and I would like the x-axis to recognize the date-class of the variable. I found some topics in...

Ciao Gianni, no, in principal you do not need to do do any variable selection or transformation. The multiple random permutations allow to discover all the possible relationship even if the variable are very similar. Indeed if the variable are...

Dear colleagues, the registration is open now for the *International Summer School:* *Geocomputation using free and Open Source Software** (20th-24th August 2018) * organized by Spatial Ecology (www.spatial-ecology.net) <http://www.spatial-ecology.net/> hosted at the *Berkeley...

Guys, I can see no built-in support for zoo objects in Rcpp (I seem to recall there was support on the old version), is that right? If it is has anyone written an extension supporting zoo and is willing...