How do I append rows to an array in Python?

Question

I have an array which is a 1X3 matrix, where: column 1 = x coordinate column 2 = y coordinate column 3 = direction of vector.

I am tracking a series of points along a path. At each point i want to store the x,y and direction back into the array, as a row.

So in the end, my array has grown vertically, with more and more rows that represents points along the path.

Im struggling to build this function inside a class. Help plz?

Xx

You may want to re-structure your question. Please have a read of stackoverflow.com/help/how-to-ask — Relequestual
– Relequestual, Commented Nov 30, 2015 at 11:20

Michael Aquilina · Accepted Answer · 2015-11-30 11:19:42Z

2

You're looking for the append function. But you should seriously take a look at numpy for using matrices in python

answered Nov 30, 2015 at 11:19

Michael Aquilina

5,5705 gold badges36 silver badges38 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

tombam95 · Accepted Answer · 2015-11-30 11:19:02Z

0

Use .append('item-goes-here') to append.

answered Nov 30, 2015 at 11:19

tombam95

3432 silver badges14 bronze badges

Comments

Mayur Koshti · Accepted Answer · 2015-11-30 11:39:57Z

0

In [1]: x = [1,2]

In [2]: y = [3,4]

In [3]: x+y
Out[3]: [1, 2, 3, 4]

answered Nov 30, 2015 at 11:39

Mayur Koshti

1,89218 silver badges21 bronze badges

Comments

Kenly · Accepted Answer · 2015-12-01 07:22:46Z

0

# This is your matrix 1x3
matrix = []

# Use a list to store (x, y, direction)
data = [x, y, direction]

# To add data to the matrix use `append` on matrix list
matrix.append(point)

edited Dec 1, 2015 at 7:22

answered Nov 30, 2015 at 11:19

Kenly

27k7 gold badges50 silver badges67 bronze badges

Collectives™ on Stack Overflow

How do I append rows to an array in Python?

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related