I have some data that I would like to aggregate, but I'm getting the index out of bounds error, and I can't seem to figure out why. Here's my code:
if period == "hour":
n=3
tvec_a=np.zeros([24,6])
tvec_a[:,3]=np.arange(0,24)
data_a=np.zeros([24,4])
elif period == "day":
n=2
tvec_a=np.zeros([31,6])
tvec_a[:,2]=np.arange(1,32)
data_a=np.zeros([31,4])
elif period == "month":
n=1
tvec_a=np.zeros([12,6])
tvec_a[:,1]=np.arange(1,13)
data_a=np.zeros([12,4])
elif period == "hour of the day":
tvec_a=np.zeros([24,6])
tvec_a[:,3]=np.arange(0,24)
data_a=np.zeros([24,4])
i=0
if period == "hour" or period == "day" or period == "month":
while i <= np.size(tvec[:,0]):
data_a[tvec[i,n],:]=data_a[tvec[i,n],:]+data[i,:]
i=i+1
if i > np.size(tvec[:,0]):
break
I only get the error if I make period day or month. Hour works just fine.
(The code is part of a function that takes in a tvec, data and period)
Traceback (most recent call last):
File "", line 1, in
aggregate_measurements(tvec,data,"month")
File "C:/Users/Julie/Documents/DTU - design og innovation/4. semester/Introduktion til programmering og databehandling (Python)/Projekt 2 electricity/agg_meas.py", line 33, in aggregate_measurements
data_a[tvec[i,n],:]=data_a[tvec[i,n],:]+data[i,:]
IndexError: index 12 is out of bounds for axis 0 with size 12
EDIT: Fixed it, by writing minus 1 on the value from the tvec:
data_a[tvec[i,n]-1,:]=data_a[tvec[i,n]-1,:]+data[i,:]
解决方案
Since lists are 0-indexed, you can only go up to index 11 on a 12-element array.
Therefore while i <= np.size(tvec[:,0]) should probably be while i < np.size(tvec[:,0]).
Extra Note: The break is unnecessary because the while loop will stop once the condition is met anyway.