To enhance drawing speed
and efficiency, you can display and snap to a rectangular grid.
You can also control its spacing, angle, and alignment.
The grid is a rectangular pattern of
dots or lines that extends over the area you specify as the grid
limits. Using the grid is similar to placing a sheet of grid paper
under a drawing. The grid helps you align objects and visualize
the distances between them. The grid is not plotted.
Snap mode restricts the movement of the crosshairs
to intervals that you define. When Snap mode is on, the cursor seems
to adhere, or "snap," to an invisible rectangular grid. Snap is
useful for specifying precise points with the arrow keys or the
Grid mode and Snap mode
are independent but are often turned on at the same time.
Control the Display Style
and Area of the Grid
can display the grid either as a rectangular pattern of dots or
as rectangular pattern of lines. The grid displays dots when SHADEMODE is set to 2D
Wireframe. The grid displays lines when SHADEMODE is set to Hidden.
By default, the X and Y axes
of the UCS display in a different color than the grid lines. You
can control the color in the Drawing Window Colors dialog box. This
dialog box is accessible from the Drafting tab in the Options dialog
The LIMITS command controls
the drawing area covered by the grid. As an option, you can override
the limits to make the grid cover the entire XY plane of
the user coordinate system (UCS). You can access this option in
the Drafting Settings dialog box or use the GRIDDISPLAY system variable.
Control the Frequency of
Major Grid Lines
If the grid is displayed as lines rather
than dots, darker lines called major grid lines display
at intervals. When working in decimal units or with feet and inches,
major grid lines are especially useful for measuring distances quickly.
You can control the frequency of major grid lines in the Drafting
Settings dialog box.
To turn off the display
of major grid lines, set the frequency of major grid lines to 1.
NoteIf the grid is displayed
as lines, the grid limits are displayed also as darker lines. Do
not confuse these boundaries with major grid lines.
NoteWhen the grid is
displayed as lines and SNAPANG is set to a value other than 0, the
grid will not display. SNAPANG does not affect the display of the
Change the Grid Dynamically
zoom in or out of your drawing, the grid spacing is adjusted automatically
to be more appropriate for the new magnification. This is called adaptive
For example, if you zoom
way out, the density of displayed grid lines reduces automatically.
Conversely, if you zoom way in, additional grid lines display in
the same proportion as the major grid lines.
Change Grid and Snap Spacing
As you work, you can turn Grid and Snap mode
on and off, and you can change the grid and snap spacing. You can
turn Snap mode on and off temporarily by using an override key.
Snap spacing does not have to match grid spacing.
For example, you might set a wide grid spacing to be used as a reference
but maintain a closer snap spacing for accuracy in specifying points.
Change the Grid and Snap
Angle and Base
need to draw along a specific alignment or angle, you can change
the grid and snap angle by rotating the user coordinate system (UCS).
This rotation realigns the crosshairs on the screen to match the
new angle. In the following example, the UCS is rotated 30 degrees
to match the angle of the anchor bracket.
The grid and snap points are always aligned
with the UCS origin. If you need to shift the grid and grid snap
origin, move the UCS.
To display a grid and set
To turn on Snap mode and
set snap spacing
To set the grid limits
To temporarily override
To rotate the grid and
snap angle and change the base point
To change the grid display
between dots and lines
To change the frequency
of major grid lines