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Composed charts (line and bar combination)

Composed charts combine a bar chart and a line chart into a single visualization. This allows you to compare two related metrics with different visual emphasis.

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They are especially useful when you want to show volume (bars) alongside a trend or rate (line).

Example use case in real estate:

  • Number of property listings (bars) vs. average price (line)

  • Number of inquiries (bars) vs. conversion rate (line)

  • New listings (bars) vs. days on market (line)

Table of Content

  1. How composed charts work

  2. Configuration options

  3. Display options

  4. Footnote field

  5. Best practices

  6. Example setup

How composed charts work

A composed chart always includes:

  • One dimension (X-axis)

  • One metric displayed as bars

  • One metric displayed as a line

Both metrics share the same dimension but are visually separated by chart type.

Example:

  • Dimension: Month

  • Bar metric: Number of listings

  • Line metric: Average price

Result:

  • Bars show listing volume per month

  • Line shows how prices evolve over time

Composed Chart example

Configuration options

Dimension

  • Defines the X-axis (horizontal axis)

  • Typically time-based (e.g. months, quarters, years)

Example:

  • Dimension: Month

  • Result: X-axis shows Jan, Feb, Mar, etc.

Bar metric

  • Displayed as vertical bars

  • Best for absolute values or volumes

Example:

  • Number of listings

  • Number of inquiries

Line metric

  • Displayed as a continuous line

  • Best for trends, averages, or rates

Example:

  • Average property price

  • Conversion rate

Display options

Display legend

Shows a legend explaining the bar and line metrics.

Use it when:

  • The meaning of bars vs. line is not immediately obvious

Best practice:

  • Always enable when both metrics need clear distinction

Show X-axis title

Displays a label for the X-axis.

Example:

  • “Month”

  • “Year”

Best practice:

  • Enable when the dimension is not self-explanatory

Y-axis title

Displays a label for the Y-axis.

Example:

  • “Listings and average price”

  • “Number of inquiries and conversion rate”

Best practice:

  • Clearly reflect both metrics or use a neutral label if units differ

Compact numbers (Y-axis)

Shortens large numbers on the Y-axis.

Example:

  • 1,000 → 1K

  • 1,500,000 → 1.5M

Recommended for:

  • Property prices

  • Large volumes of listings or inquiries

Show dots (line)

Highlights individual data points on the line.

Use it when:

  • You want to emphasize exact values on the line metric

Avoid it when:

  • The dataset is dense (can clutter the chart)

Show data labels (bars)

Displays values directly on top of each bar.

Use it when:

  • Exact values are important for interpretation

Avoid it when:

  • There are many bars or limited space

Footnote field

You can add additional context below the chart.

Formatting options:

  • Bold

  • Links

Use the footnote for:

  • Data sources

  • Metric definitions

  • Explanations of how values are calculated

Example:

  • “Data based on internal Engel & Völkers listings (2022–2025).”

  • “Conversion rate = inquiries divided by total listings.”

Best practices

Do’s

  • Combine metrics that are logically related

  • Use bars for volume and line for trends or averages

  • Keep units understandable and clearly labeled

  • Enable the legend for clarity

  • Use data labels selectively for key insights

Don’ts

  • Do not combine unrelated metrics (e.g. website visits and property prices)

  • Do not use two metrics with completely different scales without clear explanation

  • Do not overload the chart with too much information

  • Do not enable all display options at once if it reduces readability

  • Do not skip the footnote when additional explanation is needed

Example setup

Scenario: Listings vs. price development

  • Dimension: Month

  • Bar metric: Number of listings

  • Line metric: Average property price

  • Display legend: Enabled

  • Show X-axis title: Enabled (“Month”)

  • Y-axis title: Enabled (“Listings and average price”)

  • Compact numbers Y-axis: Enabled

  • Show dots: Disabled

  • Show data labels: Enabled (bars)

This setup clearly shows how listing volume and price trends interact over time, making it easy to identify correlations.

Composed Chart example setup

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