Natural processes can have a distinct recurrent behaviour, e. The recurrence plot depicts the collection of pairs of times at which the trajectory is at the same place, i. To make the plot, continuous create pdf of large plot in r and continuous phase space are discretized, taking e.

The visual appearance of an RP gives hints about the dynamics of the system. This quantification allows to describe the RPs in a quantitative way, and to study transitions or nonlinear parameters of the system. The base for these dynamical invariants are the recurrence rate and the distribution of the lengths of the diagonal lines. Close returns plots are similar to recurrence plots. The main advantage of recurrence plots is that they provide useful information even for short and non-stationary data, where other methods fail. Moreover, the dimension of the considered phase spaces can be different, but the number of the considered states has to be the same for all the sub-systems.

Recurrence Plots for the Analysis of Complex Systems”. This page was last edited on 2 February 2018, at 23:52. 2D representation of the 3D object. It may be drawn in the position of a horizontal plane passing through, above, or below the object. The plan view from above a building is called its roof plan. 3-dimensional object from the position of a vertical plane beside an object.

An elevation is a common method of depicting the external configuration and detailing of a 3-dimensional object in two dimensions. Elevations are the most common orthographic projection for conveying the appearance of a building from the exterior. North Elevation of a building is the side that most closely faces true north on the compass. In the building industry elevations are a non-perspective view of the structure. These are drawn to scale so that measurements can be taken for any aspect necessary. Drawing sets include front, rear and both side elevations. The elevations specify the composition of the different facades of the building, including ridge heights, the positioning of the final fall of the land, exterior finishes, roof pitches and other architectural details.

For example, the north and west views may be shown side-by-side, sharing an edge, even though this does not represent a proper orthographic projection. 3-dimensional object from the position of a plane through the object. A section is a common method of depicting the internal arrangement of a 3-dimensional object in two dimensions. The style of crosshatching often indicates the type of material the section passes through. A 2-D cross-sectional view of a compression seal.

These views are typically used when an object has a surface in an oblique plane. By projecting into a plane parallel with the oblique surface, the true size and shape of the surface is shown. Mnemonic: an “actor on a stage”. A simpler way to visualize this is to place the object on top of an upside-down bowl. Sliding the object down the right edge of the bowl reveals the right side view. An image of an object in a box.

The same image, with views of object projected in the direction of sight onto walls using first-angle projection. Similar image showing the box unfolding from around the object. Image showing orthographic views located relative to each other in accordance with first-angle projection. Third angle projection is used. Mnemonic: a “shark in a tank”, esp. A simpler way to visualize this is to place the object in the bottom of a bowl. Sliding the object up the right edge of the bowl reveals the right side view.