Divide a line, look at the drawing, and see nothing change. Almost everyone meets this once. The command reported success, yet the screen shows no mark at all. The cause is nearly always the same: point style in AutoCAD has never been set, so the division points are drawing as a dot barely one pixel wide.
This article measures every figure on AutoCAD 2027 at the Institute, copies the prompts verbatim, and states the real number of points created — the number most tutorials get wrong. For the whole drafting and linework workflow, see the AutoCAD for Construction course.
Why nothing appears after you divide
Type POINT in a fresh drawing and AutoCAD prints this line before asking for a location:
Current point modes: PDMODE=0 PDSIZE=0.0
Those two numbers are the whole story. Autodesk's PDMODE page says the variable "Controls how point objects are displayed", with an initial value of 0. Style 0 is a single dot.
The PDSIZE page gives an initial value of 0.0000, and at that value AutoCAD "Creates a point at 5 percent of the drawing area height".
Put plainly: the points are there, they can be snapped to and counted, you simply cannot see them. This is not a corrupt drawing and not a failed command.
Setting it from the dialog or from the variables
There are two routes, and both write to the same two variables.
The first route is DDPTYPE, or Format then Point Style. The dialog is titled Point Style and holds 20 style tiles, a Point Size: box and two buttons:
Set Size Relative to Screen— Autodesk describes it as "Sets the point display size as a percentage of the screen size. The point display does not change when you zoom in or out."Set Size in Absolute Units— "Sets the point display size as the actual units you specify under Point Size. Points are displayed larger or smaller when you zoom in or out."
The second route is to type the variables, which is much faster once you know them:
PDMODE 3 ; an X, the easiest to see
PDSIZE -3 ; 3% of the viewport heightThe sign convention for PDSIZE is exactly as the Autodesk page states: a positive value "Specifies an absolute size", a negative one "Specifies a percentage of the viewport size".
Put briefly, point style in AutoCAD is just a picture-based way into those two variables. Learn the variables and the dialog becomes optional.
A practical rule: architectural and structural drawings want a negative PDSIZE, because the points then stay visible at any zoom. Survey drawings, where points must print at one fixed size, want a positive value.
Does changing the style need a REGEN?
Autodesk's PDMODE page says: "After you change PDMODE and PDSIZE, the appearance of existing points updates the next time that the drawing is regenerated." Read that, and many people conclude they must type REGEN by hand. We put it to the test on the 2027 release.
The method: draw a line, divide it into 6, take a screenshot, change PDMODE, screenshot again, and compare pixel by pixel. To know what counts as noise, we also took two screenshots in a row with nothing changed at all.
| Test | Pixels changed | Where they changed |
|---|---|---|
| two screenshots, nothing changed | 34 | the command line strip |
PDMODE from 3 to 34 | 2,139 | the drawing area |
REGENAUTO off, then 34 to 2 | 615 | the drawing area |
REGEN typed straight afterwards | 353 | the command line strip |
The first row is the noise floor: those 34 pixels are just the blinking cursor. The two middle rows changed hundreds to thousands of pixels, and they changed them in the drawing area.
So the display updates at once, even with REGENAUTO switched off, and a REGEN typed afterwards changes nothing further. The reason is printed on the command line: the moment PDMODE is set, AutoCAD reports Regenerating model. It has already regenerated for you.
If you have set the point style in AutoCAD and the screen still looks the same, regeneration is almost certainly not the culprit. Check whether the layer holding those points is switched off or frozen.
The DIVIDE command asks for segments, not points
This is the single most common error in tutorials. We typed the command on AutoCAD 2027 and copied both prompts verbatim:
Select object to divide:
Enter the number of segments or [Block]:
The word on the prompt is segments, not points. Autodesk's DIVIDE page says it outright: "The number of point objects created is one less than the number of segments that you specify."
Our measurement agrees. A line 6000 long, with 6 entered, produced 5 points, at 1000, 2000, 3000, 4000 and 5000. Neither end carries a point, because both ends already exist.
Enter a number outside the permitted range and AutoCAD states the limit:
Requires an integer between 2 and 32767, or option keyword.
The MEASURE command, and where the remainder lands
MEASURE divides by step length instead of by count. The prompts, verbatim:
Select object to measure:
Specify length of segment or [Block]:
Since an object's length rarely divides evenly by the step, there is almost always a leftover piece. The practical question is which end it lands on — and the answer depends on where you click.
We ran two measurements on the same 6000 line with the same 2500 step:
| Where you click | Points land at | The 1000 remainder is at |
|---|---|---|
| near the left end | 2500 and 5000 | the right end |
| near the right end | 1000 and 3500 | the left end |
Autodesk's MEASURE page states the rule our measurement showed: it places points "starting at the endpoint closest to the point you used to select the object". So when the odd piece has to fall on one particular side — stirrup spacing running evenly from the support, say — just click that half of the object.
An arc gives n minus 1 points, a circle gives n
The "one fewer than the segment count" rule holds only for open objects. On a closed object the first and last division coincide, so AutoCAD places a single point there.
We measured all three cases with the same number, 6. A line gave 5 points. A half-circle arc also gave 5 points. A circle gave 6 points.
The arc is where people slip, because it looks like part of a circle and therefore feels closed. It is not: an arc has two ends, so it follows the same rule as a line.
Circles carry one more detail. Autodesk's MEASURE page notes that dividing a circle "starts at the angle from the center set as the current snap rotation angle". Our measurement agrees: dividing a circle into 6 produced points at 0, 60, 120, 180, 240 and 300 degrees.
This is exactly where guides about dividing arcs go wrong. An arc is open and a circle is closed, and the two produce different point counts from the same number.
To divide a circle into 6 parts for a hexagon, enter 6. To get 6 points along an arc, enter 7. Drawing both is covered in our article on circles in AutoCAD.
Which layer the points land on, and how to snap to them
These two questions decide whether dividing is usable at all.
Layer. We set the current layer to TIM, divided, and measured: all five points sat on TIM. Division points follow the current layer at the moment the command runs; they do not go to any special layer. So set the layer first, exactly as with any other object — layer organisation is covered in our article on layers in AutoCAD.
Snapping. Division points can only be caught with the Node snap, abbreviated NOD. Without it the cursor passes straight over them, and users usually conclude the divide never ran. The other snap modes are covered in our article on object snap in AutoCAD.
One housekeeping tip: once you have drawn what you needed from the points, delete them. Type QSELECT, choose Point under Object type, click OK to select every point in the drawing, then Delete.
The Block option: scatter blocks instead of points
Both commands carry a [Block] option right there on the prompt, and this is the part almost no guide mentions.
Type DIVIDE, pick the object, then type B instead of a number. The prompts that follow, copied verbatim from the 2027 release:
Enter name of block to insert:
Align block with object? [Yes/No] <Y>:
Enter the number of segments:
The middle question decides whether the blocks rotate with the object. Answer Y and each block turns to the tangent where it sits, which is what balusters following a curve need. Answer N and every block keeps the orientation it had when it was defined.
Our measurement: dividing a line into 4 with the Block option produced 3 blocks and 0 points. The one-fewer rule still holds, and no points are added.
It replaces a whole sequence of manual work: balusters along a rail, trees along a route, bolts along the edge of a gusset plate. Creating and inserting blocks is covered in our article on blocks in AutoCAD.
Four things often repeated that are not true
| Often repeated | What the 2027 release does |
|---|---|
| Enter the number of points you want | The prompt says segments; an open object yields one fewer point |
| Seeing nothing means the command failed | The points exist; PDMODE is simply 0 |
| The command offers Baseline, Insert point, Angle | The real prompt offers exactly one option, [Block] |
You must type REGEN after changing the style | The 2027 release regenerates at once, even with REGENAUTO off |
The third row deserves a note. A page currently ranking on the first results page for dividing arcs lists five options — Baseline, Number of segments, Measure, Insert point and Angle — as if they belonged to the command. We typed the command and copied the prompt: both DIVIDE and MEASURE offer exactly one option, [Block]. The other four names do not exist.
Frequently asked questions
What are the command aliases?
DIV for DIVIDE and ME for MEASURE. Both ask for the object first and the number second.
Does dividing cut the object into pieces?
No. Both commands only add point objects on top; the original stays a single object. To cut it for real, use BREAK or TRIM.
Which PDMODE value is easiest to see?
3, an X, is clearest on a dark background. Two others worth knowing are 2 for a plus and 34 for a circle with a centre dot.
Why will the cursor not snap to a division point?
Because the Node snap is off. Type OSNAP and tick Node, or type NOD while AutoCAD is asking for a location.
What is the maximum number of segments?
AutoCAD answers directly when you overstep: Requires an integer between 2 and 32767, or option keyword.
Do division points plot?
Yes, if their layer is still set to plot. So divide on a spare layer and turn plotting off for it, or clear the points with QSELECT before issuing the drawing.