Draws and labels grid lines at 0.1 NDC intervals.
Available in version 1.2.0 or later.
The identifier returned from calling Ngl.open_wks.
This procedure draws light gray vertical and horizontal lines at 0.11 NDC intervals and labels them. The frame is not advanced in this procedure. This is useful for debugging purposes if you need a guide for drawing polymarkers, lines, polygons, and text using NDC coordinates.
For a simple example of using Ngl.draw_ndc_grid run the following Python script:
import Ngl wks = Ngl.open_wks("x11","example") Ngl.draw_ndc_grid(wks) Ngl.frame(wks) Ngl.end()