d.grid: -g and -w flags do not display any grid

[veroandreo]

I have tested in NC location and in an UTM location with no success.

d.mon wx0
d.rast elevation
d.grid -g size=100

Nothing, no error either. Tested in trunk and 76 relbranch.

[Nikos Alexandris]

Here, works using the PNG driver or the wxGUI. Unfortunately, in my setup, I cannot test a 'wx' monitor! But, isn't 'wx' essentially the same as the GUI?

In a 'metric' Location:

g.proj -g
name=Lambert Conformal Conic
proj=lcc
datum=nad83
a=6378137.0
es=0.006694380022900787
lat_1=36.16666666666666
lat_2=34.33333333333334
lat_0=33.75
lon_0=-79
x_0=609601.22
y_0=0
no_defs=defined
unit=Meter
units=Meters
meters=1

Grids drawn as expected via via

d.erase
d.grid size=1000 color=red width=5 -b -t
d.grid size=10000 color=blue width=10 fontsize=20

​https://i.imgur.com/Jm4WnLJ.png

In instructing -g, units matter

d.grid size=0.05 -g color=green fontsize=20 width=10

• plain png output: ​https://i.imgur.com/M4g9OQY.png
• in the wxGUI: ​https://i.imgur.com/G3mX7lu.png

[veroandreo]

Indeed! And it also works as expected in wx monitors. Thanks for the heads up :)

If -g or -w is to be used in a projected location (no need to use them if location is latlon), size must be in degrees and not really in map units (m or other).

Closing as invalid (should have read the manual more carefully)