CODEWITHSUNDEEP
pythonnumpymatplotlibplotmesh
M.Gosvig
M.Gosvig

Reputation: 3

Python plot values at nodes in meshgrid

I have from

    numpy.meshgrid(xx,yy)

a rectangular grid.

To get the coordinates (nodes) I split it into two lists X and Y with values:

    X = (0.0 , 0.2 , 0.4 , 0.6 , 0.8 , 1.0)*6
    Y = (0.0 , 0.2 , 0.4 , 0.6 , 0.8 , 1.0)*6

Which gives a grid with 36 points. (think of it as a unit square)

Now i have from solving a linear system of equation another list which have the size (36,1).

I want to plot the values from the (36,1) list at the corresponding nodes in my grid.

So the first 6 points from the (36,1) list lies on the x-axis (Y = 0) and then the following 6 lies on Y = 0.2 and so on. Does anyone have any idea how to do this?

Upvotes: 0

Views: 1059

Answers (1)

DrV
DrV

Reputation: 23550

Take your output array and:

disparray = myarray + (arange(6) * .2)[:,None]
plot(X.flatten(), disparray.flatten(), '.')

This should do.

And, of course you can plot with a for loop.

figure()
for r in range(myarray.shape[0]):
    plot(X[0], myarray[r] + 0.2*r, 'k')

This uses the X values from the first row of your mesh as the X values in the plot and plots each row of your result array myarray at offsets 0, 0.2, 0.4... with a black line

Upvotes: 1

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