Gabriele Brambilla wrote:
> for example I read this:
>
> On Pythons prior to 2.7 and 3.1, once you start experimenting with
> floating-point numbers, you're likely to stumble across something that may
> look a bit odd at first glance:
3.1415 * 2 # repr: as code (Pythons < 2.7 and 3.1)
> 6.28
Gabriele Brambilla writes:
> the values in www are like 1.01e-134 and also smaller, and I sum values
> like this: there could be any problem summing so small numbers?
The default floating-point number type in Python is a fixed-precision
float http://docs.python.org/3/library/stdtypes.html#typesn
for example I read this:
On Pythons prior to 2.7 and 3.1, once you start experimenting with
floating-point numbers, you're likely to stumble across something that may
look a bit odd at first glance:
>>> 3.1415 * 2 # repr: as code (Pythons < 2.7 and 3.1)
6.2834
>>> print(3.1415 * 2) # s
ok,
the things I get is very specific.
my results differs from the other guy's ones with which I compare them for
slightly details.
We fit the data with a function and we obtain different but similar values.
our fit routines on the same data return the same results. So we produce
different data.
t
On Mon, Mar 03, 2014 at 08:00:52PM -0500, Gabriele Brambilla wrote:
> Hi,
>
> I'm doing a sum in a for loop:
>
> www is the quantity I add.
>
> MYMAP[i, j, k] = MYMAP[i, j, k] + www
>
> MYMAP is a numpy array
>
> I have strong reasons to think that in this operation happens some
> numerical er
> I'm doing a sum in a for loop:
>
> www is the quantity I add.
>
> MYMAP[i, j, k] = MYMAP[i, j, k] + www
>
> MYMAP is a numpy array
>
> I have strong reasons to think that in this operation happens some numerical
> error...Have you suggestions to discover where it is?
Hi Gabriele,
Can you expl
Gabriele Brambilla writes:
> www is the quantity I add.
>
> MYMAP[i, j, k] = MYMAP[i, j, k] + www
>
> MYMAP is a numpy array
Unfortunately, we have no idea what values are in ‘MYMAP’ nor ‘www’. So
it's difficult for us to see what might be causing any problem, or even
whether there is any proble
Hi,
I'm doing a sum in a for loop:
www is the quantity I add.
MYMAP[i, j, k] = MYMAP[i, j, k] + www
MYMAP is a numpy array
I have strong reasons to think that in this operation happens some
numerical error...Have you suggestions to discover where it is?
thanks
Gabriele
__
On Thu, Oct 15, 2009 at 5:28 AM, Mr Timothy Hall
wrote:
> whenever i run this part of the program, no matter what values i put in for
> vto, k1t etc... it always equals zero.
> im slightly aware of floating point numbers but im not sure why this will
> not give me a real answer.
> when i do it on
On Thu, Oct 15, 2009 at 11:28 AM, Mr Timothy Hall
wrote:
> hi,
> i am writing a program for a runge-cutter method of solving ODE's and im
> having a problem with one part.
>
> whenever i run this part of the program, no matter what values i put in for
> vto, k1t etc... it always equals zero.
> im
hi,
i am writing a program for a runge-cutter method of solving ODE's and im having
a problem with one part.
whenever i run this part of the program, no matter what values i put in for
vto, k1t etc... it always equals zero.
im slightly aware of floating point numbers but im not sure why this wi
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