Filter

(redirected from red filter)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.
Related to red filter: light filter

Filter

A rule that stipulates when a security should be bought or sold according to its price action.

Filter Rule

In technical analysis, an arbitrarily set percentage of increase or decline in a stock's price that the analyst sees as an indicator to buy or sell the stock. For example, the analyst may set his/her own filter rule at 15%. If the stock rises 15%, the analyst recommends buying; if it falls 15%, he/she recommends selling. While the particular percentage is subjective, one arrives at it by observing the stock's historical trends. The filter rule exists to help the investor avoid buying or selling at insignificant or anomalous changes in price. However, many analysts do not believe that the filter rule consistently produces profits for the investor.
References in periodicals archive ?
When students look at the figure through a red filter, the area without any red component will be perceived as black, while the rest will be perceived as red
Most major filter makers, including Lee, Cokin, B+W and Hoya, produce a plain red filter, ideal for black and white infrared photography.
Rather than having a red filter which affects all parts of the image, the system finds those areas which are red and makes them white.
Exposing the original photo through a red filter creates a negative from which a printing plate is made, in a process not unlike making a regular photo from a negative.
Marlboro went from a red filter tip targeted to women, with a minor share of market, to the position of leader of the pack.
He used a deep red filter for his next shot, which caused the sky to darken to a dark gray, and to emphasise the white snow on the Half Dome.
Typical RGB filters cover around 100-150nm in bandwidth and a red filter of 100nm bandwidth will be less affected by dispersion than a blue filter of the same bandwidth.
Light that passed through a red filter as well as light from a filter that shows the glowing hydrogen gas, were coloured red.
The filter's effect on the object's luminance depends on the transmission spectrum of the filter and the spectral power distribution of the object, eg a red filter will make green objects appear dim but it will only have a small effect on red objects.
OS = 0.369[[alpha].sup.2] - 0.408[alpha] + 0.156 Red filter (6)
Burns, who was out 'lamping', shot Mr Lawson after his binoculars were picked up in a friend's red filter.