On 2013-04-19 01:02:59 +, Benjamin Root said:
>
>
>
> On Thu, Apr 18, 2013 at 7:31 PM, K.-Michael Aye
> wrote:
> I don't understand why sometimes a direct assignment of a new dtype is
> possible (but messes up the values), and why at other times a seemingl
I don't understand why sometimes a direct assignment of a new dtype is
possible (but messes up the values), and why at other times a seemingly
harmless upcast (in my potentially ignorant point of view) is not
possible.
So, maybe a direct assignment of a new dtype is actually never a good
idea?
As numpy.fromfile seems to require full file object functionalities
like seek, I can not use it with the sys.stdin pipe.
So how could I stream a binary pipe directly into numpy?
I can imagine storing the data in a string and use StringIO but the
files are 3.6 GB large, just the binary, and that w
Is it possible to use sys.stdin as input for numpy.fromfile?
I can't make it work. This simple example:
import sys
import numpy as np
# I know the stream format, so I skip parsing the header
keys = ['lot','lon','tb','qual']
dt = [(key,'f8') for key in keys]
# skip the header, it has 'end' in
for some reason you do not want to convert to float64 you can add
the result of the previous line to the "bad" mean:
bad_mean = data.mean()
good_mean = bad_mean + np.mean(data - bad_mean)
Val
On Tue, Jan 24, 2012 at 12:33 PM, K.-Michael Aye
wrote:
I know I know, that's pre
I know I know, that's pretty outrageous to even suggest, but please
bear with me, I am stumped as you may be:
2-D data file here:
http://dl.dropbox.com/u/139035/data.npy
Then:
In [3]: data.mean()
Out[3]: 3067.024383998
In [4]: data.max()
Out[4]: 3052.4343
In [5]: data.shape
Out[5]: (1000,
Dear all,
I can't wrap my head around this. Mathematically it's not hard, I just
don't know how to store and access it without many loops.
I have a function f(x,y).
I would like to calculate it at x = arange(20,101,20) and y = arange(2,30,2)
How do I store that in a multi-dimensional array and
On 2010-12-30 16:43:12 +0200, josef.p...@gmail.com said:
>
> Since linspace exists, I don't see much point in adding the stop point
> in arange. I use arange mainly for integers as numpy equivalent of
> python's range. And I often need arange(n+1) which is less writing
> than arange(n, include_en
Dear all,
I'm a bit puzzled that there seems just no way to cleanly code an
interval with evenly spaced numbers that includes the stop point given?
linspace offers to include the stop point, but arange does not?
Am I missing something? (I am aware, that I could do
arange(9,15.0001,0.1) but that'
Dear numpy hackers,
I can't find the syntax for unpacking the 3 dimensions of a rgb array.
so i have a MxNx3 image array 'img' and would like to do:
red, green, blue = img[magical_slicing]
Which slicing magic do I need to apply?
Thanks for your help!
BR,
Michael
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