On 11/15/2012 04:20 AM, Boris Vladimir Comi wrote:
>
> Hi all:
>
> I have begun to learn about python / matplolib / basemap and really need some
> help.
>
> My data is in an Excel workbook with the following structure:
>
> Evento Fecha Latitud
> Longitud Hora (UTC)
> 1 02/mayo 19,7
> -95,2 0045
> 19,3
> -95.3 0115
> 19,8
> -95,6 0145
> 19,9
> -96,6 0215
>
>
> 2 03/mayo 20,2
> -99,6 0815
> 21,5
> -99,8 0845
> 22,5
> -99,9 0915
> 23,5
> -100,0 0945
>
> 3 15/mayo 21,3
> -118,9 2215
> 21,5
> -118,7 2245
> 22,8
> -120,3 2315
>
> . . .
> .
> .
> . . .
> .
> .
> . . .
> .
> .
>
>
>
>
>
>
> How to open excel file in python?
>From Excel, save the file as a csv file, rather than a proprietary
format. Then, within Python program, use the csv module,
http://docs.python.org/2/library/csv.html
The essential parts:
import csv
def getdata(filename):
with open(filename, "rb") as infile:
csvreader = csv.reader(infile, delimiter ="\t", quotechar='"')
for row in csvreader:
---- process row ----
where row comes back as a list of items.
You may have to play with the delimiter and quotechar, as I don't use
Excel itself, to know what it defaults to. But a csv file is a text
file, so it should be pretty obvious if you just look at the file with a
text editor or viewer, what the separator and quote characters are. The
quote character generally only matters if some field has an embedded
separator or newline in it.
>
> I would like to plot multiple line joining the positions of each of the
> events, it is possible to do this? Have any idea how to do it?
Try matplotlib: http://pypi.python.org/pypi/matplotlib/1.1.0
It depends on numpy: http://numpy.scipy.org/
>
> The idea is to plot the trajectories on a particular region, for my case is
> Mexico.
>
--
DaveA
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