Error bars are graphical representations of the variability of data and used on graphs to indicate the error or uncertainty in a reported measurement.
However, sometimes error bars are really short and even smaller than the size of the markers on my plot. In a scientific paper in the experimental sciences, it is still expected to include such error bars on the graphs. Thus, I got an ugly figure like:
Obviously, I'm not an experimentalist, and my questions are:
(1) Are there some convention about such an issue in practice;
(2) If the lengths of error bars are the same for all measuring points with the same marker. Can I just explain in the caption that I have used the size of markers (such as the diameter of a circle and side length of a square) to represent the error bar instead of plotting the error bars actually? If not, could you please suggest me how should I present such a figure better to show the statistic property.