已知函数\(f\left( x \right)={ }\!\!\{\!\!{ }\begin{matrix} \sin \pi x,0\leqslant x\leqslant 1, \\ {lo}{{{g}}_{2018}}x,x > 1, \\\end{matrix}{ }\)若\(a\)，\(b\)，\(c\)互不相等，且\(f\left( a \right)=f\left( b \right)=f\left( c \right)\)，则\(a+b+c\)的取值范围是__________．