Hi Sayan,
> Is it that? We can have different plots and hence animation from a single
> data file.Very good!...if you have some time in your disposal, it will be
> kind of you to illumine in this matter...may be some useful link will do.
>
> I have written this small code from scratch,there's n
Hi Sayan,
> Yup it's exactly what I want!
>
> I want many data files,not one...to make an animation out of it. For a data
> file t is constant.
You should not need many data files to make an animation. If you write your
loops correctly, you can take a single data file with all the data. If y
s
> run) in the 3 rd column. 't' is float and constant for each looping. If you
> know what a phase plot is(doesn't matter if you don't), I want to see the
> phase plot evolving with time. Thus the need of a time axis and hence plot
> with V(velocity-Yaxis), X (
Hi Sayan,
> Thank Andre for your prompt answer.
No problem.
> I'll figure out the plotting issue once the dat files are made. So it's the
> primary concern.
> For an example I am attaching a dat file herewith. The two columns here are 2
> numpy arrays.I want to add a third column, to be preci
Hi Sayan,
This question would be better suited to the matplotlib list.
Also, a more precise description of your existing data, and what you hope it
would look like would make it easier to help answer your question. Eg., from
your description, it is not clear if your existing data is in a table,
Hi Rail,
> I'm attempting to write a script with command-line arguments. Based on some
> reading I have done online and some advice from this mailing list I'm going
> to use docopt and schema modules. The problem I'm facing is that I'd like to
> be able to give this script to anyone who needs i
Hi David,
> I'm trying to use python for analysing data from building energy simulations
> and was wondering whether there is way to do this without using anything sql
> like.
>
> The simulations are typically run for a full year, every hour, i.e. there are
> 8760 rows and about 100+ variable
Hi All,
I have a general question. I have never taken a formal programming course. I
have learned everything I know from office mates (earlier on) and now mostly
Google, as I need it. Most everything I write is only for my own consumption.
I write scripts/programs to do science research, an
Dear Matthew,
> I don't need to hear how bad my programs are...either you are gonna help or
> your not...if you have questions about what i have wrote or why i wrote
> something someway ask...dont just jump to conclusions
>
> I forgot to include that i had to write a "stack" function in a "pyt
To the python tutor list,
One comment I would like to make in light of the current email exchanges is
that generally speaking, one of the things I have greatly appreciated about the
python user community is how friendly and helpful they have been. This
particularly strikes me when I see time a
> To summarize,
> with a numpy array called a, the OP is getting an error doing:
>
> (3 < a < 5).any()
>
>> ...
>
> I think not. The last expression you give will even return true if one
> of the values is > 3 and a DIFFERENT value is < 5. And i suspect the
> OP only wants a TRUE if at least
>
> On Jul 17, 2012, at 10:29 PM, Alexandre Zani wrote:
>
>
> On Tue, Jul 17, 2012 at 10:21 PM, Andre' Walker-Loud
> wrote:
>> Hi Santosh,
>>
>> On Jul 17, 2012, at 10:09 PM, Santosh Kumar wrote:
>>
>>> Here is my script:
>>
Hi Santosh,
On Jul 17, 2012, at 10:09 PM, Santosh Kumar wrote:
> Here is my script:
>
> name = raw_input("What's your name? ")
>
> if name == "Santosh":
>print "Hey!! I have the same name."
> elif name == "John Cleese" or "Michael Palin":
>print "I have no preference about your name. Re
h a string where a float should be
etc')
Have fun!
Andre
On May 8, 2012, at 5:48 PM, questions anon wrote:
> On Tue, May 8, 2012 at 4:41 PM, Andre' Walker-Loud
> wrote:
> Hello anonymous questioner,
>
> first comment - you may want to look into hdf5 data
Hello anonymous questioner,
first comment - you may want to look into hdf5 data structures
http://www.hdfgroup.org/HDF5/
and the python tools to play with them
pytables - http://www.pytables.org/moin
h5py - http://code.google.com/p/h5py/
I have personally used pytables more - but not for any g
Hi Greg,
> I'm new to python, is schooling a python-developer thing? Whether I ask for
> help at forums, IRC or here, someone schools me. Should I stick with Java?
No, the python mailing list is for the most part, very friendly and helpful (in
my experience).
Mark's message that you not hijac
> import numpy as np
>> Vhel_fdiff3 = np.array([abs(Vmatch3_1 - Vmatch3_2), abs(Vmatch3_1 -
>> Vmatch3_3), abs(Vmatch3_3 - Vmatch3_2)])
>> your_answer = Vhel_fdiff3.max(axis=0)
>
> or
>
> import numpy as np
> a = np.array([Vmatch3_1-Vmatch3_2, Vmatch3_1-Vmatch3_3, Vmatch3_3-
> Vmatch3_2])
> print
Hi Elaina,
> Vhel_fdiff3=[]
> for i in xrange(len(Vmatch3_1)):
> Vhel_fdiff3.append(max([abs(Vmatch3_1[i] - Vmatch3_2[i]),abs(Vmatch3_1[i]
> - Vmatch3_3[i]),abs(Vmatch3_3[i] - Vmatch3_2[i])]))
>
> #print Vhel_fdiff3
> #appending writes a list, but numpy which makes the with_ work needs a
Hi Elaina,
just reading your question (and responses). There is an issue with what you
wrote in the email, which may help.
> for row in dat:
>
> gcoords=ICRSCoordinates(dat['ra-drad'],dat['dec-drad'],radians=True).convert(GalacticCoordinates)
This line is identical to the one that broke
Hi Michael,
I bet there is a better way (which I would like to see), but here is what I
have come up with for my own uses.
"""
ints = []
u_in = False
while u_in == False:
try:
u_input = raw_input('please enter 5 integers, space separated\n
')
for n in
Hi Steven,
> (5) When assembling strings from substrings, never use repeated concatenation
> using + as that can be EXTREMELY slow. Use str.join to build the string in
> one assignment, instead of multiple assignments.
>
> Your code shown above is *very* inefficient and will be PAINFULLY slow i
>> Exercise 17, extra credit 6 Learn python the hard way: Find out why
>> you had to do output.close() in the code.
>>
>>
>> Code:
>>
>> output.close()
>> input.close()
>>
>>
>> I don't get it. If you don't close input and output it works exactly
>> the same as if you would close them, so why
>> You might look at http://www.sqlalchemy.org/, since it works with most
>> databases. However if you are new on databases, I think you should start
>> learning databases basics, choose a database management system (DBMS)
>> that fit your needs and learn as much as you can about that specific
> > package that can open a databases without knowing there format?
>
> The Python DB API is pretty good at covering all the common databases but
> sadly everyone has some slight variances so you do need to know which product
> you will be using.
>
> As an example the SQLite package that comes
>
> What type of databases? sql server, mysql, sqllite?
Hi James,
well this already helps. I don't even know. Do I have to know ahead of time?
Or is there a general database package that can open a databases without
knowing there format?
Thanks,
Andre
Hi All,
I am completely new to databases as well as using python to access/create
databases. I started googling about it and found so much info, I wasn't sure
where to begin to answer my first question. So I thought I would query this
group by asking a question I am sure has been asked before
> thank you for all of the resonses, I have attempted all of the suggestions.
> It is a numpy array so I can try another list if you would prefer but I
> thought I would show the error anyway.
> the error I am receiving is
> ValueError: The truth value of an array with more than one element is
Hi anonymous questioner,
Like Alan, I suspect you are using numpy as
import numpy as N
there is probably a numpy email list where this would be more appropriate
(personally I don't object, but I don't want to speak for all the subscribers).
the 2nd attempt is closer to the right answer. To he
Hello anonymous questioner,
> ok, thanks for your help Andre
your welcome. hope you continue enjoying python.
Andre
> On Tue, Aug 30, 2011 at 2:37 PM, Andre' Walker-Loud
> wrote:
> to have multiple dirs is simple,
>
>> for dir in glob.glob(MainFolder + '
x27;*/03/'):
> but I received:
> TypeError: glob() takes exactly 1 argument (3 given)
>
>
> thanks
>
>
> On Tue, Aug 30, 2011 at 1:40 PM, Andre' Walker-Loud
> wrote:
> hello,
>
> yes, I would also try adding a wild card in the dir search
>
error by me. but that still doesn't help me select the
> dir and files!
> Could it be because I am trying to select folders within other folders to
> then get a file from each of those folders?
>
>
> On Tue, Aug 30, 2011 at 1:30 PM, Andre' Walker-Loud
> wrote:
>
Dear Anonymous Questioner,
I am not sure how the Windows environment works, but in linux, I would replace
> for ncfile in glob.glob('.nc'):
with
> for ncfile in glob.glob('*.nc'):
ie, add the "wild card" '*' character to grab all files which end in '.nc'
Andre
On Aug 2
Hello Anonymous Questioner,
First - you will probably be told this isn't the correct email list for this
question - this is a general python tutorial list, while your question is numpy
specific, so if this doesn't help, you should probably look to another email
list.
There are a couple general
On Jun 13, 2011, at 1:44 PM, Emile van Sebille wrote:
> On 6/12/2011 1:55 PM Andre' Walker-Loud said...
>> Hi Alan,
>>
>>>> * Or you just get used to the fact that some numbers are not exact in
>>>> floating point.
>>>
>>>
Hi Alan,
>> * Or you just get used to the fact that some numbers are not exact in
>> floating point.
>
> This got me thinking. How many decimal places do you need to
> accurately, say, aim a laser somewhere in a 180 degree arc accurately
> enough to hit a dime on the surface of the moon?
Here i
Hi Michael,
You have to do three (four) things.
1 - make a directory where you want your executables to live (after you have
created them)
on my machine, I copy everything to /usr/local/walkloud/bin/ which requires
sudo, but you can put them anywhere in your $PATH
2 - in your .tcshrc or .csh
ython.org wrote:
>> Date: Sun, 27 Feb 2011 18:58:46 -0800
>> From: Andre' Walker-Loud
>> To: Ezra Kahn
>> Cc:tutor@python.org
>> Subject: Re: [Tutor] numpy import failure
>> Message-ID:<75198436-f849-4994-8d48-1726c2ee7...@gmail.com>
>> Content-T
Hi Ezra,
Are you using Mac OSX or LINUX or ...
If you have a preexisting python installation, it may be that when you launch
python, it loads the older version, and not the new EPD version. When you
launch python, what do you see? For example, on my Mac OSX, launched from
Terminal, I get
%
ientific notation to into
this format - I guess by forcing the power of the exponent.
Thanks,
Andre
On Oct 5, 2010, at 6:39 PM, Wayne Werner wrote:
> On Tue, Oct 5, 2010 at 7:51 PM, Andre' Walker-Loud
> wrote:
> Hi Alan,
>
> The point I can not get to work is
>
>
king for - if I
could get it to work.
Thanks,
Andre
On Oct 5, 2010, at 3:43 PM, Alan Gauld wrote:
> "Andre' Walker-Loud" wrote
>
>>> a = 0.00762921383941
>>> ea = 0.000830132912068
>>> a / ea
>> 9.190352205653852
>>
>> By de
Hi All,
I want to print scientific numbers with a specified number of decimal places.
However, I want the number printed to be dynamically determined by the data.
Example:
> a = 0.00762921383941
> ea = 0.000830132912068
> a / ea
9.190352205653852
By default, I will print the uncertainty ("ea
Hi Sander,
On Thu, 2009-10-29 at 17:30 -0400, Andre Walker-Loud wrote:
I have a simple question. I am writing a little program that will
make some plots of data files. I want to have optional args to pass,
for example to specify the plot ranges. I have never written a
script/
code that
Hi All,
I have a simple question. I am writing a little program that will
make some plots of data files. I want to have optional args to pass,
for example to specify the plot ranges. I have never written a script/
code that takes optional args (but I have used plenty) - so I am
feeling
Hi Alan,
1) I am trying to trying to figure out how I would set up an
interactive python script, however, I am having trouble googling
this, since a search for "interactive python" just returns
instructions on how to type "python" in a terminal to get an
"interactive" session
Che
Hi All,
I am thinking of creating a data analysis suite with python, and I
want it to be interactive - ie the program asks the user (me) for
input, like which data file to use, how many parameters to minimize,
etc. There are a few features I want it to have, like graphing, both
the initi
> if you want accuracy and are willing to sacrifice the total range of
> numbers that Python's IEEE754 double-precision floats give you, then
> use the decimal.Decimal class instead -- better precision, smaller
> range.
>
> however, if you wish to stick with floats, use the string format
> operator
Hi there,
I am using python to do some scripting. In particular, I am using it
to run some jobs which require precision inputs. I do this by having
python write an input file, which I then feed to some other program.
The problem I am having is getting python to write number into this
inpu
ss.Popen()'
I thank you in advance.
Cheers,
Andre
On Oct 4, 2007, at 5:13 PM, Alan Gauld wrote:
> "Andre Walker-Loud" <[EMAIL PROTECTED]> wrote
>
>> If I were using CSH, I could do all this very simply by having these
>> lines in my script
>>
Hi All,
lets say I am in Dir A (out of my control because I have submitted a
job to a queuing system)
and I have a python script which is running in this directory - the
one I submitted to the queue
what I need to do is have my python script run another executable,
but it must do it from a
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