Hi,zh! thank you! Now, I have followed you suggestion and got a picture. Followed is the data for the picture:
1 -2.88
1 -2.85
1 -2.76
1 -2.62
1 -2.56
1 -2.43
1 -1.44
1 -1.27
1 -0.41
1 4.14
1 4.43
1 4.46
1 4.59
1 4.82
1 4.97
2 -2.88
2 -2.85
2 -2.76
2 -2.62
2 -2.56
2 -2.43
2 -1.44
2 -1.27
2 -0.41
2 4.14
2 4.43
2 4.46
2 4.59
2 4.82
2 4.97
As we can see, the two point for 1 and 2 at the same energy is not linked with a line, how to achieve it?Now, I can draw a line between the two points manually, however, I think it shoud have a more convenient way to do draw the picture.
Thanks in advance!