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Opens the Graph Image Capture dialog for extracting data from a graph image. Is used in the Digitise Data Sheet Curve feature. The command handles initial image selection and opening.
| Number | Type | Compulsory | Default | Description | 
|---|---|---|---|---|
| 1 | string | No | Current working directory | Starting directory for location of graphic files | 
Return type: real array
Returns the data points extracted. First element is the number of data points extracted, n . The next n elements are the x-values, the following n elements are the y-values of those data points.
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