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Table 1 Slope position classes defined by Weiss, 2001.

From: Identifying malaria vector breeding habitats with remote sensing data and terrain-based landscape indices in Zambia

Slope Position Class

TPI

Slope

valley

<-1 SD

 

lower slope

≥-1 SD and <-0.5 SD

 

flat slope

≥-0.5 SD and ≤0.5 SD

≤5°

middle slope

>-0.5 SD and <0.5 SD

>5°

upper slope

>0.5 SD and ≤1 SD

 

ridge

>1 SD

 
  1. SD = standard deviation, (>) = above mean, (<) = below mean
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International Journal of Health Geographics

ISSN: 1476-072X