Mar-10-2019, 11:23 AM
(This post was last modified: Mar-10-2019, 11:23 AM by dazzabaijan. Edited 1 time in total.

*Edit Reason: wrong code tag format*)
I have 2 lists of x and y coordinate that are independently generated, with

`a/h`

amount of points between `0`

and `a`

.x = np.linspace(0, a, a/h) y = np.linspace(0, d, d/h)when

`a/h`

is such that `0`

increases to `a`

in steps of integers i.e. `[0,1,2,..,a]`

. It's nice because then the number of elements within the list can be used as indices. And as a result I can usually create a meshgrid such that a third list `V1`

can be associated with it.X, Y = plt.meshgrid(x, y) def potential(V1): return V1[X, Y]where

`potential(V1)`

is now `V1`

corresponding to the meshgrid `[x, y]`

. However I'm doing an assignment where I'm required to investigate how step-sizes affect my problem. As a result if I was to have a step-size of non-integers from `0`

to `a`

i.e. `[0, 0.5, 1,...,a]`

Now I can't do what I did above since the indices are now non-integers. Raising the error```
Error:
IndexError: arrays used as indices must be of integer (or boolean) type
```

How can I fix this so that I don't rely on the value of the element itself as the index of the elements, so that if there was a step-size of `0.25`

between `0`

to `a`

for a list `X`

say i.e. X = [0, 0.25, 0.75. 1.0] or x = np.linspace(0,1,4)such that I can have

x[0] = 0 corresponds to V[0] x[1] = 0.25 corresponds to V[1] x[2] = 0.75 corresponds to V[2] x[3] = 1 corresponds to V[3]?