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1.2.1 Input data

A GMT program may or may not take input files. Three different types of input are recognized (more details can be found in Appendix B in the Technical Reference):

  1. Data tables. These are ``spreadsheet'' tables with a fixed number of columns and unlimited number of rows. We distinguish between two groups:

  2. Gridded dated sets. These are data matrices (evenly spaced in two coordinates) that come in two flavors:

    You may choose among several file formats (even define your own format), but the GMT default is the architecture-indenpendent netCDF format.

  3. Color palette table (For imaging, color plots, and contour maps). We will discuss these later.


next up previous contents index
Next: 1.2.2 Job Control Up: 1.2 The GMT environment: Previous: 1.2 The GMT environment:   Contents   Index
Paul Wessel 2006-05-31