From e79d2cd6d5f3ce0e94d7b713df8b1bc40e69d527 Mon Sep 17 00:00:00 2001 From: James Douglass Date: Mon, 24 Jun 2024 12:24:10 -0700 Subject: [PATCH] Adding a DOI to the slope citation. --- src/pygeoprocessing/geoprocessing_core.pyx | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/pygeoprocessing/geoprocessing_core.pyx b/src/pygeoprocessing/geoprocessing_core.pyx index 6b545f6d..4f025484 100644 --- a/src/pygeoprocessing/geoprocessing_core.pyx +++ b/src/pygeoprocessing/geoprocessing_core.pyx @@ -300,8 +300,9 @@ def calculate_slope( """Create a percent slope raster from DEM raster. Base algorithm is from Zevenbergen & Thorne "Quantitative Analysis of Land - Surface Topography" 1987 although it has been modified to include the - diagonal pixels by classic finite difference analysis. + Surface Topography" 1987 (https://doi.org/10.1002/esp.3290120107) although + it has been modified to include the diagonal pixels by classic finite + difference analysis. For the following notation, we define each pixel's DEM value by a letter with this spatial scheme::