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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 netCDF.

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


next up previous contents index
Next: Job Control Up: The GMT environment: What Previous: The GMT environment: What
Paul Wessel
1999-07-01