On 09/15/2011 11:55 AM, neeru K wrote:
Dear Gary,
thank you for the reply.
I will be more specific and take the same example that you have given
and tell you what is my problem -
array([0.0, 1.3, 2.45, 3.87, 4.54, 5.11, 6.90, 7.78, 8.23, 9.01])
from this array I want to a sub-list with lower and upper indexes that
are not present in the above array for example - sub-list[3, 8]
Is there a function for this?
thank you
niranjan
You say "index", but I think that is not what you mean. An index is in
integer referring to an element's position in the array. The "value"
at an index is what I believe you are referring to.
Nevertheless, I think list comprehension is what you want:
[ x for x in A if 3.0 <= x <= 8.0 ]
will extract all the values between 3 and 8 from the array A and create
a new list containing them.
If you want the new list to be a numpy array then
numpy.array([ x for x in A if 3.0 <= x <= 8.0 ])
On Thu, Sep 15, 2011 at 10:54 PM, Gary Herron <gher...@digipen.edu
<mailto:gher...@digipen.edu>> wrote:
On 09/15/2011 09:40 AM, neeru K wrote:
Dear Python Users,
I am trying to write a code for visualization (raster plots
and peri-event time histogram) of time series
electrophysiological data using numpy, scipy and matlplotlib
in python. I am importing the data into list using loadtext
command.
I was curious if anyone is aware of a function in numpy that
can *extract a smaller list containing numbers from a larger
list* given the upper and lower limit of the values between
which the smaller list lies.
Thank you in advance.
Sincerely,
niranjan
--
Niranjan Kambi
Senior Research Fellow,
Neeraj Lab,
National Brain Research Centre,
Manesar, Gurgaon-122050
Haryana, INDIA
Ph:+919818654846 <tel:%2B919818654846>
website:-
http://www.nbrc.ac.in/faculty/neeraj/Lab_webpage/Niranjan_Kambi.html
email:- neuro.n...@nbrc.res.in <mailto:neuro.n...@nbrc.res.in>
<mailto:neuro.n...@nbrc.res.in
<mailto:neuro.n...@nbrc.res.in>>, neuron...@gmail.com
<mailto:neuron...@gmail.com> <mailto:neuron...@gmail.com
<mailto:neuron...@gmail.com>>
Do mean to extract a sub-list from a list based on lower and upper
indexes into the list? Python has a standard notation for
indicating sub-lists, and numpy implements them:
>>> a = numpy.array(range(10))
>>> a
array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
>>> a[3:6]
array([3, 4, 5])
If you mean something else, please be more specific, and we'll try
again.
Gary Herron
--
Gary Herron, PhD.
Department of Computer Science
DigiPen Institute of Technology
(425) 895-4418 <tel:%28425%29%20895-4418>
--
http://mail.python.org/mailman/listinfo/python-list
--
Gary Herron, PhD.
Department of Computer Science
DigiPen Institute of Technology
(425) 895-4418
--
http://mail.python.org/mailman/listinfo/python-list
