Animations

Here we will explore what is involved in creating animations (i.e., movies). Of course, an animation is nothing more than a series of individual images played back in an orderly fashion. Here, these images will have been created with GMT. A GMT movie is made with the movie module that takes care of all the book-keeping of making a movie (advancing frame counters, converting each plot to a raster image, assembling the images into a movie). The user is left to focus on the creation of a main frame script (that will have access to special variables to know which frame it is as well as user-defined data) and optional scripts that prepares files for the movie, lays down a constant background plot, and appends a constant foreground plot. The movie module explains the available options and gives a few simple examples you can cut-and-paste to run in your terminal. Below are more advanced movie examples. You can generate anything from tiny animated gif files for your PowerPoint or KeyNote presentations or a ull-featured movie with thousands of frames at HD or 4k resolution.

• (1) Animation of the sine function

• (2) Examining DEMs using variable illumination

• (3) Orbiting a static map

• (4) Flying from NY to Miami at night

• (5) Control spline gridding via eigenvalues

• (6) Demonstrate aliasing by sampling a chirp

• (7) Spinning Earth showing crustal ages

• (8) One year (2018) of Pacific seismicity events

• (9) Flying over the Antarctic Ridge and the East Pacific Rise

• (10) The effect of sub-pixeling

• (11) Wrapping the Marbles on a Sphere

• (12) Image and Grid Manipulations

• (13) Animating time-series (seismograms)

• (14) Animating earthquake focal mechanisms

• (15) Animating 2-D coupled gridding via SVD