I have a dataset of x-y coordinates and their corresponding heights. I wish to draw a contour map on a 2-d plane. Could someone help me to draw this in Matlab or in Excel?
The "surf" command in MATLAB will draw your data as a surface. If you are looking to visualize the contour lines, there is a function "contour" that does this very well.
What type of graphical output are you looking for? I don't think you are looking for a contour plot with this few of points. I suspect more of a surface plot.