# VectorPaint area comparisons: calculate side lengths before arranging 1, 4 and 9 units

Language: en
Canonical: [VectorPaint area comparisons: calculate side lengths before arranging 1, 4 and 9 units](<https://allluckly.cn/en/guides/vectorpaint-area-comparison/>)
中文：[中文 HTML](<https://allluckly.cn/guides/vectorpaint-area-comparison/>)
English: [English HTML](<https://allluckly.cn/en/guides/vectorpaint-area-comparison/>)
Published: 2026-10-27T00:00:00+08:00
Modified: 2026-10-27T13:09:54+08:00
Author: Bison

Build areas of 1, 4 and 9 from unit squares, separating side length from area and checking labels and scope.

English translation of the [Chinese original](<https://allluckly.cn/guides/vectorpaint-area-comparison/>), translated on 2026-10-27. Original publication dates, attribution, code and version notes are retained.

An area chart can go wrong when values are used as side lengths. Use fictional values 1, 4 and 9 to build 1×1, 2×2 and 3×3 unit-square blocks. The data is illustrative and the drawing does not perform calculations.

## Define the meaning of the values

Define A, B and C as comparable relative quantities of 1, 4 and 9. Reserve title and labels on an 1100 by 700 pixel canvas. Record value, intended area and grid dimensions. Side lengths 1, 4 and 9 would produce areas 1, 16 and 81, so establish the relationship before drawing.

## Create a consistent unit square

Create one square unit and duplicate it into 3×3, 2×2 and 1×1 blocks at the same unit size. Avoid actual gaps; optional fine grid lines should not imply missing area. Do not resize groups independently to fill columns. Compare areas in one colour before introducing identification colours.

## Arrange groups on a common baseline

Use one bottom baseline with centred labels. Different heights encode data and should not be equalised. Keep groups clearly separated but related. Make any reference line unobtrusive. Hide labels to inspect geometry, then restore them and verify that moving groups has not exchanged their data identities.

## Show values and the construction reference

Label areas as 1, 4 and 9 units and provide a unit-square key. Distinguish area values from grid side lengths. Use a clear relative-quantity title and consistent label sizes instead of exaggerating the largest number typographically. Count units from the geometry and compare with labels.

## Avoid an unexplained second colour variable

Use one colour or clearly defined group colours without implying an unsupported second measure. Keep opacity consistent and check the chart in greyscale. Any texture should maintain comparable density and preserve unit boundaries rather than making one group appear disproportionately heavy.

## Test the rule with a 16-unit variant

Add 16 units as 4×4 in a separate test rather than freely enlarging the 3×3 block. Keep a unit-based reference even if grids are hidden. Reallocate layout without changing the common unit size. For non-square values, calculate the required geometry externally or choose another chart; the whole-grid template is not arbitrary-value automation.

## Inspect units and labels at the output size

Save and inspect exported joins, baseline and key at delivery size. Simplify overly dense internal lines without changing outer areas, retaining the construction source. Keep units and title with the graphic. Recheck geometry after data changes, then reopen and compare visible units and labels against the list.

## Diagnose exaggerated differences

Check for value-based side scaling or independent layout scaling when differences look exaggerated. Restore the shared unit, not misleading labels. Inspect joins, strokes and rendering hairlines separately. Undo non-uniform deformation if needed. Audit unit size, grid dimensions, total area and group identity together.

## Related tutorials and sources

[VectorPaint shape practice: build a little house from rectangles and circles](<https://allluckly.cn/en/guides/vectorpaint-basic-shapes/>), [VectorPaint bar chart: keep lengths, numbers and units consistent](<https://allluckly.cn/en/guides/vectorpaint-bar-chart/>).

Checked on October 27, 2026 using [Apple public version information](<https://itunes.apple.com/lookup?id=1587272880&country=cn>): VectorPaint 1.0.8, requiring iOS / iPadOS 17 or later. Capability scope follows the [official App Store listing](<https://apps.apple.com/cn/app/id1587272880>) and corresponding controls. These are reproducible workflows and checks, without a claim of step-by-step physical-device, private-server or target-software testing. Dimensions, data and copy are exercises; follow your installed version.