Modify legend markers in plot

Hi, The figure below shows the legend containing 8 legend entries and I would like to reduce it to 4 entries by changing the markers as shown manually. Thank you.

Answer 1

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/277438-marker-and-line-in-legend-in-matlab-plot#answer_216684

[Pai-Feng Teng]

You didn't even answer his question.

[DGM]

The linked thread seems to answer the question quite plainly.