The Split Tool can split a break-line or contour line into multiple lines, at either selected points or selected lines. This is useful for editing lines that may have been incorrectly joined. When a segment is selected within the line to be split, the new lines generated will not include the selection. When a point is selected within the line to be split, the newly created lines will both have an end point at the split point.
After the lines have been added (via file imported data or drawn) select which line to be split. This can be done either by selecting a line from within the feature list window, or by selecting a line within the main window/model. A preview will display each new line in a different colour. The split can be confirmed or discarded by clicking the 'Finish' button or the 'X' in the wizard.
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Select the line you wish to be split
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Find and click the point or section of the line where the split is required (it will become highlighted)
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Select the Split tool from the menu
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Press 'Continue' button when ready to proceed
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Check that the preview is indeed you want
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Press 'Finish' button
Closed lines are not supported. If the line is closed, the split will fail and the validator will show an error message identifying what is incorrect. This is recoverable once the necessary selection change has been made; there is no need to start again. If the operation needs to be cancelled, click on the 'X' in the top right of the black strip along the bottom, will cancel the Split operation.