I am afraid, there are no instructions :(

I needed it to convert raster surface contours to vector data, to be able to generate 3D model.

You need to load a background image. Then - on a raster line - add firt two points of line, their distance defines tracing step. Like this:

Inline images 2

Then click continue tracing and this is the result.
Inline images 3

You can then convert this line to bezier curve.

Inline images 4

HTH, S.

P.S. Ad Inkscape - I have been playing a lot with raster -> vector features of Inkscape, but ended with programming my own digitalization tool in xtherion. Inkscape was not designed to be used this way.

On 7 June 2012 02:42, Bruce <bruce@tomo.co.nz> wrote:

Are there any instructions regarding Xtherion’s ‘trace line’ and ‘convert to curve’ line editing features?

I expect there are – just cannot find them.

 

The ‘convert to curve’ seems to take a line with straight segments and converts it to a smooth curve, so perhaps not so complicated.

I have not been able to get any useful insights after playing with ‘trace line’, except that it adds two buttons to the interface.

 

Thanks

Bruce

 

 


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