[GRASS-user] raster boxplots wrong assignment

Dear community

I am still wondering, if the r.boxplot addon is working with just a limited number of areass/sites/regions?

Kind regards

Sibylle

From: sibylle.stoeckli@gmx.ch sibylle.stoeckli@gmx.ch
Sent: Saturday, May 25, 2024 3:48 PM
To: ‘grass-user@lists.osgeo.org’ grass-user@lists.osgeo.org
Subject: raster boxplots wrong assignment

Dear community

I would like to plot boxplots from a raster _pres_apple_spring_merged for different 1 km2 squares (38 squares, Fig. 1, layer “Untersuchungsquadrate”). I was using the same code as used before for 12 regions:

https://ecodiv.earth/post/drawing-boxplots-of-raster-values/ (Author Paulo van Breugel). All layers have the same projection (EPSG:2056, CH1903+/LV95). However, when loading the layer squares (Untersuchungsquadrate) GRASS GIS was asking for reprojection.

  • I got now a warning message, that I have a lot of categories, however, the modelling time was fast (Fig 2)
  • The error is now, that the boxplot is not showing all squares (e.g. ID_Quadrat 803174) and the boxplots are assigned to the wrong square (ID_Quadrat) (Fig. 3)

Kind regards

Sibylle Stöckli

Fig. 1

Fig. 2

Figure 3