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HTXT_6_Options Menu_
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Auto Tracing
This option toggles between auto tracing on and off.
With tracing on, just click on the first point of the
curve and watch it Gooooo…
Trace Specs…
In this dialog you can set some values that change the
behaviour of the auto tracing.
Trace width enables you to set the maximum gap
in pixels the tracer will jump over without stopping
the trace.
Trace height sets the number of pixels the tracer
will look up and down a data point to find the slope of
the curve. When you increase this number, more pixels
will be looked at; i.e. you can trace a steeper slope.
The default values are the ones we found to work best
in most cases.
Data Options…
In this dialog you can change some of the behaviour of
DataThief. It contains one checkbox and three radio
buttons.
The checkbox Enable Markers does just that. When
selected, DataThief will show markers on the spots
you've clicked on. The markers are a circle for data
points and a square box dor an error bar point. This
only works in manual data taking.
The three radio buttons control the behaviour of the
way error bars are handled:
• No error bars means the plot has no error bars
(Did I really have to explain this?)
• Asymetric error bars are error bars which are
not of equal length. In the output file you will
get —apart from X and Y values— a Delta-Y+
and a Delta-Y- value.
• Symetric error bars have an equal length on
both sides of the data point. In the output file
you get just a Delta-Y value.
When either asymetric or symetric error bars
are selected, you don't have to worry about which
point to click first. DataThief is smart enough
to know which of the two error points has the
highest value.
File Options…
In this dialog you can set the creator of the output file.
The default is dief, the DataThief file format. If you
change this to f.e. XCEL, the file will be owned by
Microsoft Excel, and can be opened by double-clicking it.
Another option here is skip headers. When selected,
this will skip all text in the output file, i.e. it will
only put the numeric data in the file.
The last option here is compression factor. When you
change this to n > 1, the output file will contain only
every n-th number.
This only works for auto-traced data!
The file options are not saved when you exit DataThief;
you will have to set them manually every time.
Zap Data
Use this and the clicked or scanned data is gone!
You can use this to when scanning a multiple curve plot;
first scan the first curve, save the data, zap the data
and then scan the second curve, etcetera.
Zap Axes
Use this to remove all entered values for the X and
Y axes when you have made a mistake. Clearly, all
the data are gone too.
Sound
This option toggles sound on and off.
Use it if our "fun" sounds make you sick…
Coordinates
This option shows or hides the floating window in
which you can see your current and last clicked
coordinates.