How to increase accuracy in contour plot,

i am getting problem in contour plot,in graph same of values like 5e-005 are not taken in account. only values upto three desimal are taken to plot graph

Answer 1

[José-Luis]

Have you tried specifying the levels at which you want the contour lines to appear?

Copy/pasting from the documentation:

contour(Z,v) draws a contour plot of matrix Z with contour lines at the data values specified in the monotonically increasing vector v. To display a single contour line at a particular value, define v as a two-element vector with both elements equal to the desired contour level. For example, to draw contour lines at level k, use contour(Z,[k k]). Specifying the vector v sets the LevelListMode property to manual.