To provide a piping route generation method and a linear pattern generation device that can efficiently route piping and wiring.

A route inspection process divides an area not into meshes of the same size but into small areas near obstacles and larger areas apart from the obstacles to lay piping near the obstacles, where targets for support fitting are easy to reserve, and also eliminate unnecessary processing in the areas apart from the obstacles, where targets for support fitting are hard to reserve. By setting large absolute values for evaluation values of nodes where the piping should be arranged, the evaluation of a route passing the nodes is increased to arrange the piping through the desired nodes.

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