gnuplot:如何读取datafile.txt的第一行并将其设置为标题

Question

有一个TXT文件:

Nameofgraph
x y
0 1
3 4
5 7

需要用标题"Nameofgraph"绘制y(x)

可能是

(read first line as string)
set title title_name
nskip=1 
plot filename skip nskip x:y

Answer 1

找到了办法:

set title "`head -1 filename.txt`"