Explain sign of data

yvonnefroehlich · yvonnefroehlich · commit 0682a1042b0b · 2024-12-24T09:38:18.000+01:00
diff --git a/pygmt/datasets/earth_dist.py b/pygmt/datasets/earth_dist.py
@@ -67,7 +67,8 @@ def load_earth_dist(
     -------
     grid
         The GSHHG Earth distance to shoreline grid. Coordinates are latitude and
-        longitude in degrees. Distances are in kilometers.
+        longitude in degrees. Distances are in kilometers, where positive (negative)
+		values mean land to coastline (ocean to coastline).
 
     Note
     ----
