Re: time consuming loops over lists

wow i dint know that a single statement like that would make such a difference. Thanks you very much. that really improves the performance -- http://mail.python.org/mailman/listinfo/python-list

time consuming loops over lists

X-No-Archive: yes Can some one help me improve this block of code...this jus converts the list of data into tokens based on the range it falls into...but it takes a long time.Can someone tell me what can i change to improve it... def Tkz(tk,data): no_of_bins = 10 tkns = [] dmax = ma

convert a string to tuple

how do I convert b is a string b = '(1,2,3,4)' to b = (1,2,3,4) -- http://mail.python.org/mailman/listinfo/python-list

Re: scipy for python 2.4

I tried to compile it from source. But it dint work.It was looking for python2.3 .But I want to install it on pyrthon 2.4 PLatform you mean I am using RedHat 9.0. is that what you were referring? can you point me to the source you are referring. I used the sourse from this link... http://www.scipy

scipy for python 2.4

Did anyone try to install Scipy package on python2.4 linux version. I see only python2.3 version of scipy released. When I try to install I get an dependency warning saying scipy cannot find python2.3. Can someone point me to python2.4 version of scipy and help me install. -- http://mail.python.

Re: Improve the performance of a loop

Actually slicing the way you suggested improved it to some extent. I did profile on this and I observed that it reduced the number of calls for __get_item__ and improved the timing to some extent. Which was useful to some extent. Thanks again. -- http://mail.python.org/mailman/listinfo/python-li

Improve the performance of a loop

What is the fastest way to code this particular block of code below.. I used numeric for this currently and I thought it should be really fast.. But, for large sets of data (bx and vbox) it takes a long time and I would like to improve. vbox = array(m) (size: 1000x1000 approx) for b in bx: vbo

Resize an Image without PIL

Hi I would like to know how to resize an Image without using python Imaging library. -- http://mail.python.org/mailman/listinfo/python-list

Re: min max of a list

oh yes its the same case. even [0,4,9,2,0] as a set [2,6] and may be not [2,7]. Its not that you are wrong its jus that I was not clear. Sorry about that. -- http://mail.python.org/mailman/listinfo/python-list

Re: min max of a list

I get a syntax error in : py> [(min((abs(p - v), v) for v in valleys + [0] if v < p)[1], ... p, ... min((abs(p - v), v) for v in valleys if v > p)[1]) ... for p in peaks] -- http://mail.python.org/mailman/listinfo/python-list

Re: min max of a list

Hi Kent, Thanks for that. But We are considering [..., 0, 101, 0, 0, 0, 0, 0] -> [13,18] .In fact if you look at the list, the histogram ends at 15 that is [0,101,0] --> [13,15]. Dont you think so. -- http://mail.python.org/mailman/listinfo/python-list

Re: min max of a list

Hi Steve! I am not sure if I was clear with my previous post .Ok let me rephrase it . Assume the values list is the content of a histogram. Then we see that values = [ 0, 72, 2, 4, 9, 2, 0, 0, 42, 26, 0, 282, 23, 0, 101, 0, 0, 0, 0, 0] 1 is repeated 72 times, 3 -> 4 t

Re: min max of a list

what if we do something like this. Assume the values list is the content of a histogram. Then we see that values = [ 0, 72, 0, 4, 9, 2, 0, 0, 42, 26, 0, 282, 23, 0, 101, 0, 0, 0, 0, 0] 1 is repeated 72 times, 3 -> 4 times and so on. That is the index would be the value

Re: min max of a list

Thanks for that. My version of python does'nt find "groupby". I am using python 2.3.2. Is there a way I could do it with out using groupby -- http://mail.python.org/mailman/listinfo/python-list

min max of a list

If this is the list. values = [ 0, 72, 0, 4, 9, 2, 0, 0, 42, 26, 0, 282, 23, 0, 101, 0, 0, 0, 0, 0] as we can see there are peaks in the list.that is 0,72,0 is a group(triangle) with peak 72.then 0, 4, 9, 2, 0, 0 with peak 9 and 0, 42, 26, 0 with 42 and s