Chart patterns are simply more complex variations of trend lines. Support- resistance and trend lines are forever to be considered when analysing chart patterns. They can be used to make short term or long term forecasts. The data can be intraday, daily,weekly or monthly and the patterns can be as short as one day or as long as many years. A lot of emphasis on price action, volume and other indicators as patterns evolve. This is where the science of technical analysis becomes the art of technical analysis.