Grading Rules

Once a Size Chart has been created and assigned to your project, you can define grading rules to control how each point on the pattern changes across different sizes.

Assign a Size Chart Before Grading

Before defining grading rules, a Size Chart must be assigned.

1. Click Assign/Manage Size Chart button in the top bar

2. Select the Size Chart you want to use

   • When assigning a Size Chart Template, you can enable the Assign and Edit Template switch to edit the template directly

3. Click on Assign button

4. Activate Grading mode (Ctrl/Cmd + G) to start editing rules

IMPORTANT: if you have just created a new Size Chart Template, you must assign it with this switch enabled in order to define the template grading rules.

The Grading Settings panel will open and display:

• The active Size Chart

• The Sample Size defined in the anatomical set

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Select a grading point

1. Click a point on the pattern where grading should be applied. Eligible grading points are shown along the edges of pattern pieces.

2. When a point is selected, it appears as an active grading point in the preview.

If multiple points overlap in the same position, selecting one of them will include the entire group.

The Grade Rule panel opens and displays:

• The grading point Name

• The list of sizes from the assigned Size Chart

• Input fields for dx and dy values

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Grading rules table

• The Sample Size row is always set to 0,0 and cannot be edited.

• Units can be displayed in mm or cm.

• Changes are saved automatically as soon as a value is confirmed by pressing Enter.

Enter grading values

• Click a cell in the dx or dy column and enter a value.

• Press Enter or Tab to confirm.

• The value is saved immediately and applied to the preview.

Values are applied symmetrically:

• Larger sizes use the entered value

• Smaller sizes use the opposite sign

Examples

• Entering -6 in the dx column for a smaller size applies -6 to all smaller sizes and 6 to all larger sizes.

• Entering -2 in the dy column for a larger size applies -2 to larger sizes and 2 to smaller sizes.

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Quick column actions

The grading table provides additional shortcuts:

• Fill column Press Shift + Enter or Cmd/Ctrl + Enter to fill the entire column, automatically inverting values beyond the sample size.

• Invert dx / Invert dy values Use the column header buttons to reverse the direction of the rule.

• Reset rules Reset all values to 0,0

• Undo / Redo

  • Cmd/Ctrl + Z

  • Cmd/Ctrl + Shift + Z (or Cmd/Ctrl + Y)

The dd (diagonal distance) column is informational only and cannot be edited.

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Editing individual sizes

If some sizes require non-linear or irregular grading:

• Click directly on any size cell

• Enter a custom dx or dy value

Each cell can be edited independently.

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Stack Point (grading anchor)

A Stack Point locks one reference point per piece, making all other grading values relative to it.

• Activate with Alt + Click on a point or by using the Stack Point button on preview sidebar.

• To limit the stack to a single axis (X or Y):

  • Cmd/Ctrl + Alt + Click on the point, or

  • Cmd/Ctrl + Alt + K with a point selected.

• Repeat the action on the same point to disable it.

Stacked points are marked with a STACKED badge in the left Grade Rule panel.

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Copy and paste grading rules

To reuse existing rules:

1. Select the source grading point.

2. Click Copy.

3. Select one or more target points.

4. Click Paste.

You can also paste selectively:

• Paste only X or Y values

• Use Cmd/Ctrl + Alt + V or Alt + Click on the Paste button

Changes are applied immediately.

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Directional grading (advanced)

Directional grading lets you edit dx/dy along rotated local axes.

• Activate from the Grade Rule panel header button or press D to cycle through:

  • Previous

  • Next

  • Tangent

• The preview shows a visual direction hint.

• Press Esc to exit directional mode.

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Proportional grading

1. Auto-Interpolation (Single Point)

Location: Grade Rule panel on the left

Steps

1. Select the relevant point

2. Click the Route icon at the bottom of the panel, or press Alt + P

The point will be automatically interpolated based on the previous and next points along the contour.

2. Auto-interpolation (all point on a segment)

Location: The right sidebar of the preview:

Steps

• Activate with the "Route" icon or Alt + Y.

• Select:

  1. A start point

  2. An end point on the same piece

Grading rules are interpolated along the shortest contour path and applied to all encountered points.

• Hold X or Y to force an axis

• Alt + X resets the start point

• Esc exits the tool

3. Proportionally (based on start and end points)

Location: Right sidebar of the preview:

Steps

1. Activate the tool using the Route icon or Alt + Y

2. Select a start point

3. While holding Shift, click an end point on the same piece

4. Select one or more target points

The grading rules will be applied proportionally to all selected target points.

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Grading links (advanced)

Grading Links synchronize grading rules between pieces with matching internal points.

Steps

1. Select multiple points on the same piece.

2. Activate Link pieces (Alt + L).

3. Click the target piece in the preview.

Points are matched by name.

Links can be managed in Grading Links:

• Enable / disable

• Show linked points

• Delete links

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Navigation While Grading

While Grading mode is active, you can:

• Pan the pattern using Space + drag

• Zoom in and out using the mouse wheel

This helps improve precision when working on dense or highly detailed areas.

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Exporting grading data

When generating the .dxf pattern file:

• Enable Enable grading to include the .rul file in the download.

• A Size Chart must be assigned and a plan with grading pack is required.

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Important

If a Size Chart Template is assigned directly to a pattern, any changes made to the template will be applied to all patterns that use it.

If, instead, the template was assigned as a Local Copy, changes made to the original template will not be propagated to those patterns.

Before editing a Size Chart Template, always check how it has been assigned to avoid unintended changes across multiple patterns.