Automating to save generated data

[Robotguy]

Thanks, I tried that. Although it runs fine, I wonder why the information is not stores in the map.dat files created.

That is, when I read via print(f[:10]), I get all zeros. Do you know what's happening?

L = 1000
data = np.random.rand(4064, 1)
print(data.shape[0])

for j in range(data.shape[0] // L):
    mapper = np.memmap(f'map{j}.dat', dtype='float64', mode='w+', shape=(L, 1))
    mapper = data[j * L:j * L + L]
    print(mapper[:10])

if data.shape[0] % L != 0:
    mapper = np.memmap(f'map{j + 1}.dat', dtype='float64', mode='w+', shape=(data.shape[0] % L, 1))
    mapper = data[j * L + L:]
    print(mapper.shape)

# Reading the maps
L = 10**3
M = 1
f = np.memmap('map1.dat', dtype='float64', mode='r', shape=(L,M))
print(f[:10])

I didn't test it, but something like the following should help you:

L = 1000
data = np.random.rand(4064, 1)

for j in range(data.shape[0] // L):
    mapper = np.memmap(f'map{j}.dat', dtype='float64', mode='w+', shape=(L,1))
    mapper = data[j*L:j*L+L]

if data.shape[0] % L != 0:
    mapper = np.memmap(f'map{j+1}.dat', dtype='float64', mode='w+', shape=(data.shape[0] % L,1))
    mapper = data[j*L + L:]