User guide

Charnwood Dynamics Ltd. Coda cx1 User Guide – Reference IV-5
CX1 USER GUIDE - COMPLETE.doc 26/04/04 159/162
Variables Data
Variables are used to store attributes of the whole data set.
If there are any variables defined (Setup: Define Variables...), their values may be defined
from the selected graph by positioning the Cursors and/or selecting a bar, and then selecting
Cursors: Define Variable... This opens the Define Variables dialogue. Select the variable
you wish to define and select OK. The Variables view window will open automatically (if it is
not already open), and the value of all defined variables will be displayed.
Note that the Variables are not stored in the data file - their values are defined only so long
as the file remains open; the values are lost when the file is closed. The Variables values
(and their names) may be copied to the Windows Clipboard with the Edit: Copy command,
and then pasted to any other Windows Application (such as an Excel spreadsheet) or saved
to a file by using the Windows Clipbook Viewer.
The available Variable types, their component names, and their units are as follows:
Time (s)
Time value at the position of the Left Cursor.
Ordinate value ()
Ordinate value of the selected plot at the Left Cursor.
Dual times Time1 (s) Time2 (s)
Time values at the Left and Right cursors.
Dual ordinate values Value1 () Value2 ()
Ordinate values of the selected plot at the Left and Right cursors.
Difference in time Difference (s)
Time difference between the Left and Right Cursors.
Difference in ordinate value Difference ()
Difference in ordinate values of the selected plot at the Left and
Right cursor positions (positive)
Max/Min ordinate value Max () Min ()
The maximum and minimum ordinate values of the selected plot.
Euclidean distance Euclidean distance (mm)
If the selected plot is a Marker position, the distance between its
position at the Left and Right cursor times.
Percent Range Percent Range1 (%) Range2 (%)
The time length of a static bar, and the time to the start of a
following static bar, expressed as a percentage of the time
difference between the starts of both bars. (The cursors may be
used in place of the first static bar.) (Used to measure Percent
Stance in Gait analysis.)
Gait Cycle statistics Distance (cm), Time (s), Cadence (steps/min), Mean velocity
(m/s)
If the cursors or a static bar mark the start & end of a Gait cycle.