Table File Format

A table is an indexed array of pairs of floating-point numbers (denoted for convenience as \(x\) and \(y\)). Each table entry (or (\(x,y\)) pair) is also indexed (an integer in the range [1, 2, … , \(N\)], where \(N\) is the number of items in the table).

Each table has a unique ID number. In addition, each table also has a string label representing the table name, which can be used in place of the table ID for most commands that operate upon tables.

The first line of a table file is reserved for the table name. The second line is used to identify the number of points on the table, and the \(x\)-interval between points. Most commonly, this is set to 0.0, in which case the third and following lines are expected to contain (\(x,y\)) pairs. However, if a non-zero value is supplied, then a single column of \(y\)-values is supplied, where the \(x\)-value of the first item (in line 3) is assumed to be 0 and each succeeding \(x\)-value will add the value of the \(x\)-interval to the preceding \(x\)-value.

Table with 0.0 x-interval
(paired floats supplied)

UpBnd_Long UpBnd_Long
11 0.0
-5.500000e+01 -1.700000e-02
-4.500000e+01 -1.600000e-02
-3.500000e+01 -1.400000e-02
-2.500000e+01 -1.200000e-02
-1.500000e+01 -1.000000e-02
-5.000000e+00 -7.000000e-03
 0.000000e+00 -5.000000e-03
 5.000000e+00 -4.000000e-03
 1.500000e+01 -2.000000e-03
 2.500000e+01 -1.000000e-03
 4.500000e+01  0.000000e+00

Table with x-interval of -2.4
(only \(y\)-values supplied)

The First Ten
10 -2.4
0
1
1
2
3
5
8
13
21
34