cannot add number in numpy array

Question

I need to work only with arrays without converting m to list

#------------------PROGRAM-----------------
n = [i/10 for i in range(10)]
m = [i for i in range(10)]
m = np.array(m)

for i, j in enumerate(n):
m[i] = m[i] + j
print(n)
print(m)
#------------------OUTPUT--------------------
[0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9]
[0 1 2 3 4 5 6 7 8 9]
#------------------what I need----------------
[0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9]
[0 1.1 2.2 3.3 4.4 5.5 6.6 7.7 8.8 9.9]

thanks for help

Answer 1

Why don't you just add two numpy arrays?

As m an n have the same dimensions, you can do:

np.array(m) + np.array(n)

Answer 2

Then how about an example code that makes this clear?

If the arrays have the same number of elements, you can add them, when they have the same shape. You can reshape() numpy arrays. If they have different numbers if elements, please clarify what should happen in this case.

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Answer 3

Lisa , i'm on PC so there is no option here to add code

#----------program-----------

n = np.array([i/10 for i in range(10)])

weight_a = [i * 0 for i in range(10)] # creating weights
weight_b = [i * 0 for i in range(10)]
weight_c = [i * 0 for i in range(10)]
m2 = np.array([weight_a, weight_b, weight_c]).transpose()

print(n)

for i, j in enumerate(n):
# i = index , j = data
m2[i][0] += j

print(m2)

#----------------------
when I print m2 the answer is still 0, n array elements not adding up in m2 array

thankyou so much again

Answer 4

Lisa
#---------program--------------------
n = np.array([i/10 for i in range(10)])

weight_a = [i * 0 for i in range(10)] # creating weights
weight_b = [i * 0 for i in range(10)]
weight_c = [i * 0 for i in range(10)]
m2 = np.array([weight_a, weight_b, weight_c]).transpose()

print(n)
m2 = m2.transpose()
m2[0] = m2[0] + n
print(m2)
#-------output---------------------
[0. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9]
[[0 0 0 0 0 0 0 0 0 0]
[0 0 0 0 0 0 0 0 0 0]
[0 0 0 0 0 0 0 0 0 0]]
#---------expected output---------
[0. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9]
[[0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9]
[0 0 0 0 0 0 0 0 0 0]
[0 0 0 0 0 0 0 0 0 0]]

thanks for helping

Answer 5

Lisa this is example code, i want to add numbers from one 1D array to another 2D array