Support Forum

Layer numbers with DXF format

Friday 14th April 2023
While using the DXF format for saving (and loading) layout designs, the layers numbers do not seem to remain fixed - merely randomly re-generated. Is this observation generally correct: DXF does not retain layer numbers? Is there any method to control this in LayoutEditor? How does LayoutEditor define the layer numbers, while opening a DXF file? Cannot be really random? In this forum, there was a discussion Dec2018-Apr2019, regarding the automapping:On/Off option for GDS and OASIS formats. Is it so that similar control over layer-numbers behaviour is not available for DXF?
Friday 14th April 2023
You are right. DXF can not store layer number. It uses layer names. When opening a DXF it is firstly check whether a layer with the used DXF name exists. If so, this layer number is used. Then is it check if the layer name contains a number, then this layer number is used. e.g. 'L12' will store the named layer as LayoutEditor layer number 12. Finally, the first unused layer is used. When saving a DXF it is ether used the layer name of the LayoutEditor or the layer number. This can be set in the setup.