Maurizio Marchi

10 Questions 23 Answers 0 Followers

Questions related from Maurizio Marchi

Where can I find a good global dataset of climatic time series?

I need a global dataset of weather stations (with monthly resolution possibly) to evaluate my Climate downscaling tool (ClimateDT freely available at https://ibbr.cnr.it/climate-dt/). I would like...

25 August 2021 7,615 9 View

How to solve spikes and peaks in interpolated raster surfaces with Kriging?

I’m working in R using the gstat package and I’m using the universal kriging to interpolate temperatures and precipitations in Europe. While for temperatures the issue is quite rare, I often have...

26 November 2020 9,883 4 View

Long-term forest data?

Does anybody know if some datasets on trees health or growth time series are freely available for Europe? My goal would be to study the climate change between 1901 and 2019 and to compare it with...

31 July 2020 3,384 4 View

Parallel computing and graphic CPU (GCPU) usage in R, is it possible with ALL R packages?

Hi all, surfing the web I wasn't able to find a simple and effective answer to my question. In other words, I need to speed up a code I wrote using several packages such as raster, rgdal, biomod2...

14 December 2019 1,911 4 View

Are time series of forest spatial data available somewhere?

Does anybody know where I could find some spatial data about the evolution of forest stand from its establishment to timber harvesting? More in general I would need a dataset for a plot with the...

11 April 2018 5,873 4 View

Which indicator for goodness of fit?

Dear all, I'm testing 5 different models and I'm using the Absolute Relative Error (ARE) which is (predicted-observed)/observed, the Absolute Error (AE) and the Root Mean Squared Error (RMSE) as...

07 April 2018 6,736 5 View

Equal size clusters with R or QGIS?

Hello everybody, does anyone know an easy/possible function/way/method/package to cluster spatial objects (polygons in my case, a grid of 500mx500m cells) with an equal number of objects per...

31 October 2017 3,245 4 View

Global and Local moran in R: how can I calculate them with different spatial threshold?

I need to calculate the Global and Local Moran indices in R using a variable distance as threshold: I have a SpatialPointsDataFrame with almost 300 points and I want to calculate the Global Moran...

10 March 2017 9,941 5 View

When should we force the intercept to zero?

Hi all, in a regression analysis when should we force the intercept to zero and why?

13 April 2016 4,531 21 View

Where can I find reliable (not interpolated neither predicted) data about species current distribution across Europe?

Data will be used for species distribution modelling

16 December 2014 3,217 6 View