From e21d151b1135d329028e5e0fe96049632aba58be Mon Sep 17 00:00:00 2001 From: lucalanteri Date: Thu, 8 May 2014 21:01:41 +0200 Subject: [PATCH] Update convergenceindex.rst --- .../processing/algs/saga/help/convergenceindex.rst | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/python/plugins/processing/algs/saga/help/convergenceindex.rst b/python/plugins/processing/algs/saga/help/convergenceindex.rst index cfd7768490c..ed4a8673da6 100644 --- a/python/plugins/processing/algs/saga/help/convergenceindex.rst +++ b/python/plugins/processing/algs/saga/help/convergenceindex.rst @@ -3,6 +3,11 @@ CONVERGENCE INDEX Description ----------- +It calculates an index of convergence/divergence regarding to overland flow. +By its meaning it is similar to plan or horizontal curvature, but gives much smoother results. +The calculation uses the aspects of surrounding cells, i.e. it looks to which degree surrounding cells point to the center cell. +The result is given as percentages, negative values correspond to convergent, positive to divergent flow conditions. +Minus 100 would be like a peak of a cone, plus 100 a pit, and 0 an even slope. Parameters ---------- @@ -18,7 +23,8 @@ Outputs See also --------- - +Koethe, R. / Lehmeier, F. (1996): 'SARA, System zur Automatischen Relief-Analyse', Benutzerhandbuch, 2. Auflage +[Geogr. Inst. Univ. Goettingen, unpublished] Console usage -------------