Pyplot 3d plot - range won't move [SOLVED]

Python Help
1

I have a set of data to which I have done a least square fit. When I try to plot in order to eyeball the result I can’t get it to plot the proper ranges.

fig = plt.figure() 
ax = fig.add_subplot(111, projection='3d') 
ax.scatter(a_data, s_data, z_data, color='blue', marker='.') 
A_range = np.linspace(minA, maxA, maxA-minA+1) 
S_range = np.linspace(minS, maxS, maxS-minS+1) 
A, S = np.meshgrid(A_range, S_range) 
Z = polynom4deg((A, S), *popt) 


ax.plot_surface(A, S, Z, color='red', alpha=0.5) 
ax.set_xlabel('Assay') 
ax.set_ylabel('Sample') 
ax.set_zlabel('Z') 
plt.show()

When I print a_data, s_data etc they seem correct. But the scatter plot always start at origin no matter what I set minA maxA, minS and maxS to. I don’t fully understand the linspace() and meshgrid(). Please point out what I’m missing.

2

I would be helpful if you could provide some example data (a_data, s_data, z_data) to demonstrate what you mean.

3

Dude, you solved it with your question. I extracted numbers from a strings to generate the a_data and s_data. I never typecasted the entries to integers. Now the plot works like a charm. Thanks!