VectorPaint ruler strips: align major ticks, subdivisions and labels

English translation of the Chinese original, translated on 2026-11-06. Original publication dates, attribution, code and version notes are retained.

A scale can confuse intervals, lines and numbers. Build a ruler-style 0–5 sample in invented units, calculating boundaries/subdivisions before arranging line lengths. It is not a millimetre ruler or a guarantee of screen/print measuring accuracy, and VectorPaint does not calibrate devices or automatically verify ticks.

Define five intervals and six major boundaries

Create a 1200 by 400 pixel canvas with horizontal 0 left/5 right and 160 pixels per invented unit. There are five intervals but six major boundaries, 0–5. An x start of 200 and end of 1000 leaves space for title/labels. These are drawing coordinates, labelled exercise units rather than millimetres/centimetres. Save the bare axis/range baseline so subsequent scaling is not mistaken for physical measurement or calibration.

Align major ticks to one baseline

Copy one major tick to all six boundaries with equal length/weight and one shared baseline. Keep 160-pixel intervals instead of shifting ticks to fit labels. Distinguish the axis/reference from ticks. Inspect line-centre positions rather than interpreting thick stroke extents as boundaries. Read six positions 0–5 before proceeding and exclude an extra line implying a sixth unit. Inspect hand-drawn reference output as artwork, separately from native guides.

Prototype ten subdivisions within one unit

Divide 0–1 into ten equal 16-pixel gaps with nine new internal ticks; existing major ticks supply endpoints. The fifth internal tick is 0.5 and may be longer than other minor ticks but shorter than majors. Count ten spaces and nine inner lines without duplicating the first major. Keep one baseline and direction, varying length only. Repeat the verified prototype across the other four units, avoiding doubled shared majors and checking every interval rather than only the first.

Place numerals at boundaries, not interval centres

Place 0–5 under their respective major boundaries with consistent clearance. Optical adjustments for narrow 1 must not move the referenced tick. Hide numbers to inspect the tick hierarchy, then restore and identify each boundary. Putting 0/5 into end-cell centres for symmetry changes meaning. Use only a few explanatory decimal labels to avoid crowding subdivisions. A different language still needs numerical order checks rather than stretching individual intervals for text width.

Check both total counts and local spacing

Five sets of nine internal ticks plus six majors give 51 tick positions. Medium ticks are styles of existing inner lines, not extra positions. Check counts for duplicates, then ten equal spaces per unit: correct count does not establish placement. Shift one minor tick slightly in a test to create adjacent wide/narrow gaps while majors stay fixed. Do not justify that through changed labels. Retain baseline/test records and restore finals; correct tick count does not make a calibrated measuring tool.

Preserve numerical meaning when resizing the strip

In a copy, change display length per unit to 120 pixels: total 600 and minor gaps 12. Update all ticks and labels together. Six majors and 0–5 remain; a shorter rendering does not mean fewer units. Available group transforms may help, but inspect distorted text and relayout labels if necessary. Moving lines without labels is inconsistent. Name both pixel-per-unit and range, identifying screen schematics; print scaling also matters, so matching labels do not establish equal physical lengths.

Inspect fine ticks and scope labels after export

Save major sources, subdivision unit and both lengths. At actual export size, check separate short ticks and correct label boundaries on light/dark backgrounds; transparency does not delete backing objects. Name invented-unit sample, pixels and revision rather than precision ruler. Decorative simplification must update the subdivision/count explanation. Explain long/medium/short ownership for editable delivery and recalculate before range changes. Retain the noncalibrated scope so cropped sharing cannot lose unit identity.

Count spaces first for extra intervals or missing lines

For eleven apparent gaps in 0–1, inspect duplicated endpoints and centred labels. Unequal subdivisions with correct majors require unit-source/repeat-spacing checks instead of individual eyeballed squeezing. A displaced 5 needs total/start checks before label dragging. If reduction merges ticks, simplify or widen spacing for the target rather than relying on a sharp source. Re-explain five intervals, six boundaries, 51 positions and labels after repairs; a ruler-like row alone is not a readable scale.