Introduction
Grouped dual-axis chart is a data visualization chart, which refers to a data chart with multiple (≥2) Y-axes, mostly a combination of grouped histogram + line chart. The chart display is more intuitive and can well show the relationship between different indicators. The relationship between data helps users better understand the data and make more accurate decisions. In addition to being suitable for analyzing two data with large differences, grouped dual-axis charts are also suitable for showing how large categories are subdivided into smaller categories, and the relationship between each part and the total.
Compare the relationship between two metrics of different types, such as volume and percentage, by displaying them at the same time. In a grouped dual-axis chart, data is divided into two groups and displayed on the left and right axes. The left axis is usually used for quantities or totals, and the right axis is usually used for percentages or ratios.
Applicable scene
Grouped dual-axis charts are suitable for scenarios where trends and changes between different categories or groups need to be compared. It is usually used to compare the changes of two or more sets of data at the same time or at the same place. Different measurement units or indicators can be presented at the same time, making the comparison of data more intuitive and clear. For example, you can use a grouped dual-axis graph to show the changes in sales and profits of two products in the same time period, or to show the trends of per capita income and living costs in different regions, which is suitable for:
1. Comparative analysis: The grouped dual-axis graph is suitable for comparative analysis of the differences and similarities between different data sets.
2. Trend display: The grouped dual-axis graph can display data trend changes and can be used to monitor business development and trends.
3. Multi-factor analysis: The grouped dual-axis graph can display two or more sets of data at the same time, which can facilitate multi-factor analysis.
Advantages and disadvantages
(1) The advantages of grouped dual-axis charts include:
①Multiple data series can be displayed at the same time to facilitate the comparison of data differences between different groups.
② Data of different units or magnitudes can be displayed to avoid interference between data.
③ It can reduce the number of charts, save space, and improve information density.
(2) The disadvantages of grouped dual-axis charts include:
① When the data distribution is quite different, it is easy to cause the data of one axis to be covered by the data of another axis, resulting in the data not being clearly presented.
② When the difference between the data is not large, the advantages of the grouped dual-axis chart may not be as obvious as other types of charts.
③The drawing process of the grouped dual-axis graph is relatively complicated, requiring high technical threshold and time cost.
How to draw a grouped dual axis chart
At present, there are many software tools for drawing grouped dual-axis graphs on the market, such as Excel, Power BI, etc. You can choose the appropriate tool for drawing according to actual needs. Here I choose the visualization of Shanhaijing for drawing. To draw a grouped dual-axis graph using the Mountain Sea Whale visualization, you can follow the steps below:
①Log in to the Shanhaijing visualization platform and create a new project.
② Import the data to be drawn on the data source page to ensure the correctness of the data format.
③ On the chart page, select "Grouped Dual Axis Chart" as the chart type.
④Set the data, color, axis and other attributes of the chart according to the data source to ensure that the data can be correctly presented in the chart.
⑤ Adjust the style of the chart as needed, including font size, color, line thickness, etc.
⑥ After confirming that the chart settings are correct, click "Save".
It should be noted that when setting a grouped dual-axis graph, make sure that the data in each group has a corresponding label on the horizontal axis, so that it can be displayed correctly in the graph. In addition, according to the characteristics of the data, you can consider using different colors, styles, etc. to distinguish different groups of data in order to better convey information.
Using Shan Hai Whale to visually draw a grouped dual-axis graph can help users better present the data, thereby expressing the meaning and trend of the data more intuitively and clearly.