SAVE AS stores the current file -- or optionally
a marked block -- with any modifications you made. You may save all
channels or a subset. Files are stored in Warthog binary (file type 'WHog')
format, in Sable format (ExpeData), or as text files (comma-separated values or tab-separated values). The 'standard format' button saves the existing file (with any modifications
you have made with transformations, smoothing, etc.) under a new file name of your choice.
If 'standard format' was not clicked, after selecting the channels to save, the file format selection window appears, as shown below:
| As mentioned above, Sable ExpeData files do not include values for mass, flow rate, barometric pressure, temperature,
and effective volume (unless written in the comments), and comments are limited to 240 characters. |
| The 'Include Time Index With Each Sample' option saves the real time of each sample in hours (24-hour format). For example, a sample read at 5:45 PM would be indicated as a time of 17.750. Additionally, the elapsed time (in seconds) since the first sample is saved in another column. |
| The 'Time Counter' option creates a variable that indicates elapsed time in hours. For example, this variable would have the value of '1' for all data during the first hour, '2' for all data during the second hour, and so forth. |
| If you are saving in Text format, you can save any markers in the file in a separate column. |
| The 'Append Metadata To End Of Text File' option will save the sample rate, sample number, duration, start time, start date, number of channels, and number of markers after the last line of data. |
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If you select either of the text file options, you have two formatting choices:
- Timing data are stored with each case (elapsed time since acquisition began, and time of day). This option is useful
for sending files to spreadsheets or plotting programs where time data
are important.
- The sample interval and start time are stored in the comment string
(the first line in the file).
- You can also perform a 'conditional' save, which lets you save only those cases that meet a Boolean selection criterion (see below)
- NOTE:
if you use conditional save, the time information (time of day, etc.) in the file will no longer be accurate. Therefore, it is highly recommended that you make backup copies of the original data before the conditional save operation.
The 'Conditional save' option lets you filter data case by case and save only the cases that meet the selection conditions. You need to specify which channel is to be tested (it is not necessary that the tested channel will be saved), one of five Boolean criteria (<, =<, =, >=, >), and a selection criterion (a number against which the individual case values in the tested channel are compared).
In this example, only cases where the value of channel 13 (wheel#1 speed in RPM) is greater than 0.5 will be saved. |
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Data files (other than text format) that have been saved by LabAnalyst have these icons:
binary files (.WHdata)
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Sable formats (.WHSable)
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