PyNGL Home > Functions > Graphics routines

Ngl.draw_ndc_grid

Draws and labels grid lines at 0.1 NDC intervals.

Available in version 1.2.0 or later.

Prototype

Ngl.draw_ndc_grid(wks)

Arguments

wks

The identifier returned from calling Ngl.open_wks.

Return value

   None

Description

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.

See Also

Ngl.draw_colormap, Ngl.open_wks, Ngl.draw, Ngl.frame, Ngl.draw_ndc_grid

Examples

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()