In this blog article, I propose a way to look at the spatial repartition of correlation between two rasters. This is an update of a blog post I wrote in 2018 : Spatial correlation between rasters. The main difference is that I use the new {terra} package instead of the old {raster} package. The …
#30DayMapChallenge: 30 days building maps (3) - Earth is spherical
The #30DayMapChallenge was initiated by Topi Tjukanov on Twitter. This is open to anyone who would like to show a map, whatever the software is. In this blog post, I will show maps made with R. I add constraints to myself for fun. This week, I will create maps that remind map makers that Earth is …
#30DayMapChallenge: 30 days building maps (2) - tmap
The #30DayMapChallenge was initiated by Topi Tjukanov on Twitter. This is open to anyone who would like to show a map, whatever the software is. In this blog post, I will show maps made with R. I add constraints to myself for fun. This week, I will use {tmap} to create maps. This follows previous …
#30DayMapChallenge: 30 days building maps (1) - ggplot2
The #30DayMapChallenge was initiated by Topi Tjukanov on Twitter. This is open to anyone who would like to show a map, whatever the software is. In this blog post, I will show maps made with R. I add constraints to myself for fun. This week, I will use {ggplot2} to create maps. […] […] …
Follow moving particle trajectory over raster with {rayshader}
{rayshader} is a fantastic package for 3D mapping, but it comes with the limitations of {rgl}. I always found it a shame not being able to travel in all directions over my 3D objects. In this blog post, I will show a trick to simulate particle trajectory in 3 dimensions like in a “first person” …
Spatial correlation between rasters
In this blog article, I propose a way to look at the spatial repartition of correlation between two rasters. For your own reason, you may want to know the correlation between rasters, but a unique value issued from fonction cor is not enough. You would like to know if there are variations of …
Mapping, spatial analyses and GIS with R
If you download the following presentation, you will find a presentation of different functions in the R-software useful for spatial data manipulations. Choosing the right libraries allows to create, import, modify, manipulate and map vector (shapefiles) or matrix (raster) spatial data. Your spatial …