StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POHow to normalize a 2-dimensional numpy array in python less verbose?
primarykey
Id
8904694
data
AcceptedAnswerId
8904762
AnswerCount
7
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2012-01-18T03:12:41.033
FavoriteCount
29
LastActivityDate
2018-04-17T08:42:25.793
LastEditDate
2012-01-18T03:18:23.807
LastEditorUserId
641514
OwnerUserId
641514
ParentId
0
PostTypeId
1
Score
65
ViewCount
84741
LastEditorDisplayName
text
Body
Given a 3 times 3 numpy array <pre><code>a = numpy.arange(0,27,3).reshape(3,3) # array([[ 0, 3, 6], # [ 9, 12, 15], # [18, 21, 24]]) </code></pre> To normalize the rows of the 2-dimensional array I thought of <pre><code>row_sums = a.sum(axis=1) # array([ 9, 36, 63]) new_matrix = numpy.zeros((3,3)) for i, (row, row_sum) in enumerate(zip(a, row_sums)): new_matrix[i,:] = row / row_sum </code></pre> There must be a better way, isn't there? Perhaps to clearify: By normalizing I mean, the sum of the entrys per row must be one. But I think that will be clear to most people.
Tags
<python><arrays><syntax><numpy><normalization>
Title
How to normalize a 2-dimensional numpy array in python less verbose?
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USAufwind
UserOwnerUserId
1. USAufwind
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 POHow to normalize a 2-dimensional numpy array in python less verbose?
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 POHow to normalize a 2-dimensional numpy array in python less verbose?
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
 singulars
 PostPostId
 POHow to normalize a 2-dimensional numpy array in python less verbose?
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.