Step 1
Launch GIMP and open the document in which you want to draw a dotted line.
Step 2
Choose a color for the line from the „Change Foreground Color“ menu.
Step 3
Click the „Paths Tool“ tool, and draw a straight line in the document where you want the dotted line to appear.
Step 4
Right-click on the line, choose „Edit“ and click „Stroke Path.“
Step 5
Click „Solid Color“ from the window that appears, and click the triangle next to „Line Style“ to make more options appear.
Step 6
Click the „Dash Preset“ drop-down menu, and choose the line style you prefer.
Step 7
Click „Stroke“ to close the Stroke Path window, and the solid line you drew will turn into a dotted line.
Anmerkung: um eine Auswahl (Selection) in einen Pfad umzuwandeln, muss man mit dem Selection-Tool und Rechtsklick das Kontextmenü aufrufen und „Selection/To Path“ wählen