how to plot a 2d matrix as contour plot?

Find the attachment of the text file having 117 rows and 2 coloums.

I need contour plot as first column on x-axis and second column on y-axis

thank you

Answer 1

[madhan ravi]

datas=load('text.txt');
contour(datas');

[madhan ravi]

oops mine looks completely different , I have no clue whatsoever to achieve that.