davidctwood的部落格

gnuplt is a great tool for ploting data images

the basic script about plotting a line plot is

set xlabel "threshold high"
set ylabel "ME"            
plot "mid.txt" using 1:2 title "middle phalanges" with linespoints pointtype 3

be careful about the data format

I was suffering from the error message  

warning: Skipping unreadable file "mid.txt"
No data in plot

I don't know hot to solve it

after some trying I decided to delete the input data and create a new one and put the file into gnuplot/bin

the peoblem is solved

Still can not figure out the problem