A type of chart that displays information as a series of data points called “markers” connected by straight segments. It is one of the most used charts and it’s similar to a scatterplot except that the measurement points are ordered and joined with straight line segments.
What are Line Charts good for?
It’s normally used to visualize a trend in data over intervals of time. Therefore, when dealing with discrete temporal variables, Line charts and analogues are the best visual solution.
How do they work in Quadrigram?
In Quadrigram you have at least, three different charts that can work with the temporal series data.
1.- Line chart: Points connected by segments
2.- Area chart: Represents % over time
3.- Radar: Which can be used to plot temporal data using polar coordinates
If you wish to work with Line chart, the best data layout would be as follows:
As you can see in the previous image, the first column contains the temporal data and there is a column by any given geography you may want to plot. In this case, the name of a country. With this data layout, you can easily plot a line per country (all at the same time and in the same chart) or just one country in a single line chart (see images below)
You can easily change the line interpolation, which can be either linear, smooth or steps (see image below)
With the same data and layout, you can test another two charts to plot the same data, stacked area chart and radar chart. See examples below: