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QuakeManager offers a Generic Column File Format with flexible formatting for general purpose use. This file format represents acceleration data series.
One of the 2 header lines must contain the data unit and should be proceeded by : “units of”
“UNITS OF”
“Units Of”
“Units of”
Another way to represent the unit is to directly state the units inside parenthesis.
In case the unit was not mentioned, then the default unit is G.
Since this file format is a column format, so data series should be read vertically and each data series is represented by a column. the file is composed of columns, the third line in the file represents either the title for each column or an integer to indicate the column number, proceeded by a column for time. As a matter of fact, we have 3 header lines, 2 lines represent information about the file and the third line is for the titles/counters proceeded by the word time to mention that this column is for time.
Then comes the columns. The first column is for time defined by the “Time(time_unit)” and the following columns is for data series. Each column represents a data series. Data are to be read vertically. Time step is calculated by subtracting the second time data from the first one. Columns can be separated using spaces, commas or tabs or combination of all the three characters.
Example:
Time history matched to spectrum in unit of G
#Misfit: 0.186372
Time(s) 1 2 3 4 5 0.000 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.002 4.23333E-04 2.44898E-03 0.00000E+00 0.00000E+00 -2.09384E-03 0.004 3.78198E-04 2.64041E-03 0.00000E+00 0.00000E+00 -2.25886E-03
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