I have a loop which generates an array from a text file. Every time it passes through the loop I want it to add the new array to the old one but I'm not sure how to do this. For example:
loop=np.arange(1,50)
for arg in loop:
str(arg)
a=np.genfromtxt('dir/'+arg+'.txt').T[0]
total=a+a+a #I know this line is wrong
How do I get total to be the total of every a over the array loop.
Do the arrays you get from the text have a fixed length? If yes, reading the first array and then doing in-place summation should work:
a = np.genfromtxt('dir1.txt').T[0]
loop=np.arange(2, 50)
for arg in loop:
str(arg)
a += np.genfromtxt('dir'+arg+'.txt').T[0]
If your arrays have different lengths weird problems might happen when numpy tries to guess how to do the additions.
If you just want to add the arrays you get while reading in a loop can't you add the array to total each time in the loop:
loop=np.arange(1,50)
total = []
for arg in loop:
str(arg)
a=np.genfromtxt('dir/'+arg+'.txt').T[0]
total+=a (or total.append(a))
