Usage

Open your SVG file with inkscape. Go to File > Save a Copy and choose Therion 2D (*.th2) as file type. A settings dialog will pop up with the following options:

    Scale: Specify the enlargement scale of the SVG drawing
    Layers: Which layers should acutally be exported
    Layers as Scraps: Each (exported) layer will become a separate scrap
    Line Type: This line type is applied to all exported paths
    Disable Path Effects: Inkscape has so-called Live Path Effects that can modify some original path. It might be desirable to export the original path to therion rather than the processed effect path
    Stroke Width Filter: It is possible to export only paths with a particular stroke width. The width must be given in pixels (px), consult the Fill and Stroke dialog if you don't know the acutall stroke width of your path. With a value of 0.000 the filter is ignored and all paths are exported.

Only path data is exported (no text, bitmaps, etc.). But texts are exported as labels.

You may use Set Properties dialog or Object Properties or XML editor to check or add parameters or (user)object which are not in menu.

If you open the .th2 file in upper left corner of document page you'll find the palette of point and line symbols.

To calibrate a map which has no surveying point in it (sections etc.) use this workflow:

In Document Properties set Default units to some metric unit like cm. Eventually also define a metric grid. Draw stuff with a defined scale of 1:100 or 1:200 for example. Then, on export to th2 format, choose the appropriate scale in the dialog which will be set as scrap scale. But: this will only apply to scraps which have no scale annotation yet. Existing scale definitions will not be overwritten.

Since inkscape uses 90dpi internally, you will see in xtherion for a 1:200 scale something like:

picture scale points (pixels): 0 0 90 0; real scale points: 0 0 200 0
