[Qgis-user] Shortest Path Output Definition

[Jan Nimczik]

Dear all,

in QGIS 3.2, I'm trying to apply  "Shortest Path (Layer to Point)" from 
the Processing Toolbox. The algorithm generates a layer with a feature 
"cost", but I cannot find a way to interpret this feature nor a way how 
to modify what it contains. Seemingly by chance it once contained a 
distance in km and the other time some real number that I cannot interpret.

Does someone know how to specify the desired output of shortest path 
analysis (km and minutes of traveling in my case)?

I'm very new to QGIS so I am only using the GUI so far.

Thanks,

Jan