From d2f782623da055163f1f8ba4a054951cdcca2eda Mon Sep 17 00:00:00 2001
From: Raimon Tolosana-Delgado <tolosa53@fwg206.ad.fz-rossendorf.de>
Date: Thu, 15 Jul 2021 20:08:45 +0200
Subject: [PATCH] documented gmTrainingImage abstract class

---
 R/abstractClasses.R | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/R/abstractClasses.R b/R/abstractClasses.R
index cbec8af..3d6e562 100644
--- a/R/abstractClasses.R
+++ b/R/abstractClasses.R
@@ -77,7 +77,10 @@ setClassUnion(name="gmSpatialMethodParameters",
 
 #' @title MPS training image class
 #' @description abstract class, containing any specification of a multiple-point
-#' training image
+#' training image. This must be analogous to [sp::SpatialGridDataFrame()], and 
+#' implement a method for [sp::getGridTopology()] and to coerce it to 
+#' [sp::SpatialGridDataFrame-class]. 
+#' 
 #' @export
 #' @importClassesFrom sp SpatialGridDataFrame SpatialGrid GridTopology
 #' @importClassesFrom sp SpatialPixelsDataFrame SpatialPixels
-- 
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