Deleting data sets from legends

I have a plot that is a combo of multiple different data sets that are being plotted on top of each other. To create the plots I have used colormap to link each data point to a third variable and then I have re-plotted the same data set using a symbol to show a 4th variable. I am trying to get rid of some of the data labels from both in my legend, any help would be appreciated

[Azzi Abdelmalek]

This is not clear for me

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/matlab/creating_plots/controlling-legends.html#bram7nu