Residual time series

By default, a file residuals.dat is generated. It represents the residuals after prewhitening all signal components found significant. The column format is the same as for the time series input file.

If the keyword residuals is provided in the .ini file, additional files t#iteration#.dat are generated, where the index #iteration# starts with 000001, denoting the residuals after the first prewhitening step.

The keyword residuals expects two integer parameters. The first defines the number of iterations for which these files shall be generated. A negative number causes SIGSPEC to generate files for all iterations. The second parameter has to be a positive number and defines a step width. If it is set 1, a file is generated after each iteration, if it is set 2, after every second iteration (starting with t000002.dat), and so on.

Example. The sample project output uses the keyword residuals in the file output.ini, namely

residuals -1 5

Setting the first parameter $-$1 provides residual time series during the entire prewhitening sequence. The second parameter provides only fifth second file to be generated. Since the number of iterations in this example is 40, the following files are produced:

output/t000005.dat
output/t000010.dat
output/t000015.dat
output/t000020.dat
output/t000025.dat
output/t000030.dat

In addition, the file residuals.dat contains the residual time series after all iterations.