Time charts are probably the most popular chart type in terms of aggregation as the algorithm of plotting these is quite obvious. On time charts, a new bar (or candlestick, line section, etc.) is plotted after completion of a certain time period (called aggregation period). For example, a chart with an aggregation of 1 day displays bars that represent daily high, low, open, and close values. On the volume subgraph, daily volume values are displayed.
Another period by which the time charts are characterized is called chart period: it determines the time span for which the entire chart is plotted. For example, a 1y D chart visualizes the price action for one year, marking open, high, low, and close prices on the daily basis. This 1y D notation is what we refer to as “chart time frame”; to learn how you can set up a time frime, refer to this article.