python - Redefining indexing in N-dimensional arrays -


so have n-dimensional array of values, let's call a. now, can plot in contour map, coordinate axes x , y, using

plt.contourf(x,y,a)

now, have carry out mapping of these points plane, so, set of coordinates. let transformation be

x - x1 y - x1

now, each point magnitude "i" in matrix @ (x,y) @ (x- x1, y - y1). can plot using

plt.contourf(x-x1, y-y1,a)

my question is, how index array such obtain array b indexing corresponds x-x1 , y-y1 instead of x , y can plot directly using following 

plt.contourf(x,y,b)

thanks!


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