search

r-spatialecology / landscapemetrics

Landscape Metrics for Categorical Map Patterns 🗺️ in R
https://r-spatialecology.github.io/landscapemetrics
GNU General Public License v3.0
227 stars 43 forks source link

lsm_l_frac Range #301

Closed mhesselbarth closed 9 months ago

mhesselbarth commented 9 months ago

Received this via email

[...] I found that the lsm_l_frac_mn () function can results in values less than 1, such as 0.97 in my case. In the help page for this function, it shows that the range of frac_mn value is > 0, which seems problematical as the range is traditionally known to be 1-2. At the same time, I also noted that in the help page for lsm_p_frac () function, the range is shown as 1-2. I am confused and thus writing to consult why the frac_mn value can be less than 1? [...]

mhesselbarth commented 9 months ago

The user supplied landscape in WGS84 so I couldn't check with FRAGSTATS, but after re-projecting, I've got the same results as with FRAGSTATS.

Nowosad commented 9 months ago

Geographical CRS bites again!