make the caller of `getRowHeight` function adapt row number change, update comment: use rows number instead of rows index.

1 files changed, 2 insertions, 2 deletions

diff --git a/picture.go b/picture.go
index 92e0106..052ec83 100644
--- a/picture.go
+++ b/picture.go
@@ -618,10 +618,10 @@ func (f *File) drawingResize(sheet string, cell string, width, height float64, f
 	if inMergeCell {
 		cellWidth, cellHeight = 0, 0
 		c, r = rng[0], rng[1]
-		for col := rng[0] - 1; col < rng[2]; col++ {
+		for col := rng[0]; col <= rng[2]; col++ {
 			cellWidth += f.getColWidth(sheet, col)
 		}
-		for row := rng[1] - 1; row < rng[3]; row++ {
+		for row := rng[1]; row <= rng[3]; row++ {
 			cellHeight += f.getRowHeight(sheet, row)
 		}
 	}