On Sat, Nov 1, 2014 at 7:31 AM, Warren Weckesser warren.weckes...@gmail.com
wrote:
(2) Multiple arrays in a single file:
...
The file contains multiple arrays. Each array is
preceded by a line containing the number of rows
and columns in that array. The `max_rows` argument
would make it
On Sat, Nov 1, 2014 at 4:41 PM, Alexander Belopolsky ndar...@mac.com
wrote:
On Sat, Nov 1, 2014 at 3:15 PM, Warren Weckesser
warren.weckes...@gmail.com wrote:
Is there wider interest in such an argument to `genfromtxt`? For my
use-cases, `max_rows` is sufficient. I can't recall ever
On Sun, Nov 2, 2014 at 1:56 PM, Warren Weckesser warren.weckes...@gmail.com
wrote:
Or you could just call genfromtxt() once with `max_rows=1` to skip a row.
(I'm assuming that the first argument to genfromtxt is the open file
object--or some other iterator--and not the filename.)
That's
Sorry, I meant names=True, not name=None.
On Sun, Nov 2, 2014 at 2:18 PM, Alexander Belopolsky ndar...@mac.com
wrote:
On Sun, Nov 2, 2014 at 1:56 PM, Warren Weckesser
warren.weckes...@gmail.com wrote:
Or you could just call genfromtxt() once with `max_rows=1` to skip a
row. (I'm assuming
On Sun, Nov 2, 2014 at 2:18 PM, Alexander Belopolsky ndar...@mac.com
wrote:
On Sun, Nov 2, 2014 at 1:56 PM, Warren Weckesser
warren.weckes...@gmail.com wrote:
Or you could just call genfromtxt() once with `max_rows=1` to skip a
row. (I'm assuming that the first argument to genfromtxt is
On Sun, Nov 2, 2014 at 2:32 PM, Warren Weckesser warren.weckes...@gmail.com
wrote:
Still, the case of dtype=None, name=None is problematic. Suppose I want
genfromtxt() to detect the column names from the 1-st row and data types
from the 3-rd. How would you do that?
This may sound
On 11/2/14, Alexander Belopolsky ndar...@mac.com wrote:
On Sun, Nov 2, 2014 at 2:32 PM, Warren Weckesser
warren.weckes...@gmail.com
wrote:
Still, the case of dtype=None, name=None is problematic. Suppose I
want
genfromtxt() to detect the column names from the 1-st row and data
types
On 9/24/14, Alan G Isaac alan.is...@gmail.com wrote:
On 9/24/2014 2:52 PM, Jaime Fernández del Río wrote:
There is a PR in github that adds a new keyword to the genfromtxt
function, to limit the number of rows that actually get read in:
https://github.com/numpy/numpy/pull/5103
Sorry to come
On 11/1/2014 10:31 AM, Warren Weckesser wrote:
Alan's suggestion to use a slice is interesting, but I'd like to
see a more concrete proposal for the API. For example, how does
it interact with `skip_header` and `skip_footer`? How would one
use it to read a file in batches?
I'm probably
On Sat, Nov 1, 2014 at 10:54 AM, Alan G Isaac alan.is...@gmail.com wrote:
On 11/1/2014 10:31 AM, Warren Weckesser wrote:
Alan's suggestion to use a slice is interesting, but I'd like to
see a more concrete proposal for the API. For example, how does
it interact with `skip_header` and
On Sat, Nov 1, 2014 at 3:15 PM, Warren Weckesser warren.weckes...@gmail.com
wrote:
Is there wider interest in such an argument to `genfromtxt`? For my
use-cases, `max_rows` is sufficient. I can't recall ever needing the full
generality of a slice for pulling apart a text file. Does anyone
On 11/1/2014 4:41 PM, Alexander Belopolsky wrote:
I cannot think of a situation where I would need more generality such as
reading every 3rd row or rows with the given numbers. Such processing is
normally done after the text data is loaded into an array.
I have done this as cheaper than
On 11/1/2014 3:15 PM, Warren Weckesser wrote:
I intended the result of `genfromtxt(..., max_rows=n)` to produce the same
array as produced by `genfromtxt(...)[:n]`.
I find that counterintuitive.
I would first honor skip_header.
Cheers,
Alan
___
On 11/1/14, Alan G Isaac alan.is...@gmail.com wrote:
On 11/1/2014 4:41 PM, Alexander Belopolsky wrote:
I cannot think of a situation where I would need more generality such as
reading every 3rd row or rows with the given numbers. Such processing is
normally done after the text data is loaded
On 11/1/14, Alan G Isaac alan.is...@gmail.com wrote:
On 11/1/2014 3:15 PM, Warren Weckesser wrote:
I intended the result of `genfromtxt(..., max_rows=n)` to produce the same
array as produced by `genfromtxt(...)[:n]`.
I find that counterintuitive.
I would first honor skip_header.
Sorry for
On 9/24/2014 2:52 PM, Jaime Fernández del Río wrote:
There is a PR in github that adds a new keyword to the genfromtxt function,
to limit the number of rows that actually get read in:
https://github.com/numpy/numpy/pull/5103
Sorry to come late to this party, but it seems to me that
more
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