Example pages containing: tips | resources | functions/procedures
Resources to control the look of the lat/lon lines include those that start with "mpGrid":
To draw the lat/lon grid associated with a particular variable, see the "Drawing locations of data values via markers or lines" examples page.
mapgrid_2.ncl:
Shows how to draw the lat/lon grid lines with different spacings
and with a dash pattern, using
mpGridLineDashPattern,
mpGridLatSpacingF, and
mpGridLonSpacingF.
mpGridAndLimbDrawOrder is set to "PreDraw" so that the map grid lines are drawn before the map outlines and map fill.
mapgrid_3.ncl:
Shows how to draw two sets of map lat/lon grids with different
spacings and colors. To do this, you need to create two map plots, and
then add one map as an annotation of another
with gsn_add_annotation.
mapgrid_4.ncl:
Shows how to mask the grid lines over land and inland water bodies, by
setting
mpGridMaskMode = "MaskNotOcean".
mapgrid_5.ncl:
Shows how to draw lat/lon lines using using lat/lon coordinate arrays
attached to a variable read off a NetCDF file. Note that only every
third lat/lon line is drawn, to keep the plot from being too busy.
mapgrid_6.ncl:
Shows how to add latitude labels to a stereographic map centered over
the north pole. Note that the tickmark labels only show longitude
locations. The latitude labels are attached
using gsn_add_text.
mapgrid_7.ncl:
Draws a WRF lat/lon grid using a new function called
gsn_coordinates.
To see more examples of drawing lat/lon grids or meshes associated with a particular variable, see the "Drawing locations of data values via markers or lines" examples page.
mapgrid_8.ncl:
Draws a lat/lon grid over an existing plot using
gsn_coordinates.
The grid is first drawn using markers, to show the locations
of missing and non-missing data, and then it is drawn as lines.
