A line chart displays information as a series of data points (called “markers”) connected by a continuous line. Usually, line charts display relationships between two or more variables and reveal trends or changes over time. They are among the most commonly used charts and can be applied to a wide variety of categories, e.g., when displaying the daily number of visitors to a website or showing variation in stock prices, etc.
There are several types of line charts you can use with Prezi Design:
- Line. A regular line chart that lets you connect data points with lines and compare the changes between them.
- Line error margin. A line chart that lets you display standard deviations or probability spans. Learn more in the article on creating a line error margin chart in Prezi Design.
- Line & line. With this multiple axes line chart, you can use two separate Y-axes to compare two different variables with separate units of measurement.
Adding a line chart to your project
- From the Prezi Design editor, select Add chart in the left-side toolbar.
- Find the line chart you want to use (you can use the search bar at the top) and click on the thumbnail or drag and drop it right onto the canvas.
Adding data to the chart
To access the chart's datasheet, double-click on it or select Edit data in the top right corner of the editor. All charts have placeholders for you to see the correct formatting. Here's how you should format the datasheet of every line chart:
Regular line chart
- Use column A to enter the time units of the X-axis. These could be days, months, years, etc.
- Every new column to the right will create a new line on the chart. Add the name of the line in the first row and all of its data points in the cells opposite of the time units.
Line error margin chart
- Use column A to enter the time units of the X-axis; these could be specific dates, years, months, etc.
- In column B, enter the data points that will be connected by the line.
- Use column C to enter the negative error values and column D for the positive error values.
- Column E lets you provide a name for the line with its error margins.
If you'd like to use more than one line, keep on adding values in the rows below and give them a separate name in column E.
Multiple axes line chart (Line & line)
- In column A, add the time units that will be displayed on the X-axis.
- Use column B for the values that will be displayed on the Y-axis (on the left).
- Values entered in the cells of column C will be displayed on the Y2-axis (on the right).
You can also add data by uploading XLS, XLSX, and CSV files, connecting your chart to a Google Drive document, connecting your chart to a JSON feed, as well as connecting to an online database. Just make sure that the formatting matches that of the pie chart.
Customizing the line chart
You can edit the line chart's colors and fonts, customize the axes and grid, adjust the data format, and do much more.
- Chart properties. Select whether you want to display or hide the values, smoothen the line chart's curves, let the viewers download your data, and much more.
- Color. Edit the colors of your chart, and set the weight and style of the lines.
- Axis & grid. Adjust the look of the grid, give titles to the axes, choose which labels to display, and do more.
- Fonts. Change the font of your chart, and adjust its size and color. You can edit individual text elements under Advanced settings.
- Legend. Enable or disable the legend, and adjust its positioning.
- Tooltips. Enable or disable the tooltips.
- Data format. Add a prefix/suffix to the data, adjust the numeric format of the values, abbreviate the values, and do more.
- Accessibility. Add a label and a description to your chart to make it more accessible to your viewers.
Downloading and/or sharing the line chart
Downloading the chart
To download the project you're working on, select the Download option in the top right corner of the editor. Next, choose one of the available file formats at the top and select Download to save the project to your computer.
If you'd like to download the chart straight from the editor, right-click on it on the canvas, select Export as... in the context menu, and pick the file format.
Learn more in the article about downloading your content in Prezi Design.
Sharing and embedding the chart
Select Share in the top right corner of the editor to access the project's privacy settings. Choose whether you want to keep it private and use a private link to share the content with others or make it public and visible on search engines. Read more in the article about changing privacy settings in Prezi Design.
To learn more about embedding the chart on your website, read the article on embedding your Prezi Design content.
Best practices for creating a line chart
- Label your axes clearly. Make sure the chart is easy to read for the viewers.
- Remove distracting chart elements. Grids, varying colors, and bulky legends can distract the viewer from quickly seeing the overall trend.
- Zoom in on the y-axis if your data set starts above zero. In some instances, changing the scale of the y-axis makes it easier for the viewers to comprehend the data.
- Avoid comparing more than 5-7 lines. You don't want your chart to become cluttered or hard to read. Visualize the data you need to tell your story, nothing more.
Learn more about Prezi Design in the article on getting started with Prezi Design.