Rating Comparison Chart

The Rating Comparison Chart lets you compare the rating history of multiple horses side-by-side on an interactive line chart. This is perfect for spotting improving or declining form trends across runners in a race.

Selecting Horses

• Use the checkboxes in the left column of the Ratings view to select horses
• Click the header checkbox to select or deselect all horses at once
• There is no limit to the number of horses you can compare
• 40 distinct colours are available for the lines

Chart Controls

• Last 10/20/50/All - Control how many races of history to display
• Rating / Score - Toggle between:
  • Rating: Shows the horse's individual RaceMetrics rating history
  • Score: Shows the weighted connection score history (see Score Mode below)
• Races Ago / By Date - Toggle between:
  • Races Ago: Shows runs as relative positions (Latest, -1, -2, etc.) - good for comparing horses with different run frequencies
  • By Date: Shows actual dates on x-axis - better for seeing timeline gaps
• Collapse/Expand - Click the chevron to collapse the chart panel

Score Mode

Score mode shows the weighted combination of all connection ratings at each historical run:

• Owner: 20%
• Trainer: 20%
• Jockey: 20%
• Dam: 18%
• Sire: 12%
• Damsire: 10%

The final point shows today's predictive score based on current connection ratings - useful for seeing how the support team compares to past runs.

Highlighting

• Click the eye icon next to a horse name to highlight that line
• Alternatively, click directly on a chart line to highlight it
• Click again or click empty space to clear the highlight
• When highlighted, other lines fade to make the selected horse's trend clearer

Chart Tooltip

Hover over any point on the chart to see detailed information:

• Date of the race (with days ago)
• Rating or Score after that race with the change (+/-)
• Course name, distance, and class
• Going conditions and race type (Flat/Hurdle/Chase etc.)
• Finishing position (e.g., 1st, 2nd, PU, etc.)

Legend Controls

• Click the coloured dot next to a horse name to temporarily hide/show that line
• Click the eye icon to highlight that horse's line
• Click the × button to remove a horse from comparison (unchecks the table checkbox)
• Click a horse name to open their profile page

Persistence

• Selections are saved per race - navigate away and return to see the same horses selected
• Settings (race limit, axis mode, chart mode) persist globally across all races