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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.
-