Add a new method getsize(fname::String) (#1913)

Author: joa-quim

src/utils.jl

@@ -1270,6 +1270,18 @@ function getsize(GI::GItype)
 	(GI.layout != "" && GI.layout[2] == 'C') ? (size(GI,2), size(GI,1)) : (length(GI.x), length(GI.y)) .- GI.registration
 end
 
+# ------------------------------------------------------------------------------------------------------
+"""
+    width, height = getsize(fname::String) -> Tuple(Int, Int)
+
+Return the width and height of the grid or image from the file `fname`.
+"""
+function getsize(fname::String)
+	!isfile(fname) && error("File $GI does not exist")
+	ds = Gdal.read(fname)
+	return Gdal.width(ds), Gdal.height(ds)
+end
+
 # ------------------------------------------------------------------------------------------------------
 """
     nrows, ncols, nseg = getsize(D::GDtype) -> Tuple(Int, Int, Int)