Re: [Anuga-user] csv formatting issue

[<mar...@li...>]

Hi,
it worked this time!
Actually, it's kind of strange, because I had already tried to comma 
separate the numbers, and the white lines you saw where just due to 
email formatting.
However, apart from using commas, I also tried to cancel the last point, 
as you suggested. That was automatically inserted by Grass GIS, which I 
use to handle GIS data. This time the code produced no error related to 
the .csv file.
In the end, this worked:
686007.82,923006.11
686145.11,923006.11
686145.11,923145.11
686003.91,923145.60

Thank you very much for your help!
I can now work to the following errors my code produced!
Marco


On 02/07/2012 04:17 PM, Stephen Roberts wrote:
> Maybe
>
> 686007.82,923006.11
>
> 686145.11,923006.11
>
> 686145.11,923145.11
>
> 686003.91,923145.60
>
> causes an error because of the empty lines. Should be
>
> 686007.82,923006.11
> 686145.11,923006.11
> 686145.11,923145.11
> 686003.91,923145.60
>
> Cheers
> Steve
>
> On 8/02/2012 2:15 AM, mar...@li... wrote:
>> Hi, thank you for your promptness.
>>
>> I have tried to run the code varying some format characteristics; 
>> amongst them I tried to separate the values by commas, like the 
>> following:
>>
>> 686007.82,923006.11
>>
>> 686145.11,923006.11
>>
>> 686145.11,923145.11
>>
>> 686003.91,923145.60
>>
>> 686007.82,923006.11
>>
>> But that just produced a slightly different error message:
>>
>>     File 
>> "/usr/lib/python2.6/dist-packages/anuga/geometry/polygon.py", line 
>> 802, in read_polygon
>>
>>       polygon.append([float(fields[0]), float(fields[1])])
>>
>> ValueError: empty string for float()
>>
>>
>> The only .csv example I could find on the manual regards a gauge 
>> location (gauges.csv). I tried to follow those formatting guidelines, 
>> producing this:
>>
>> easting,northing,elevation
>>
>> 686007.82,923006.11,0
>>
>> 686145.11,923006.11,0
>>
>> 686145.11,923145.11,0
>>
>> 686003.91,923145.60,0
>>
>> 686007.82,923006.11,0
>>
>> but I still get errors:
>>
>>     File 
>> "/usr/lib/python2.6/dist-packages/anuga/geometry/polygon.py", line 
>> 802, in read_polygon
>>
>>       polygon.append([float(fields[0]), float(fields[1])])
>>
>> ValueError: invalid literal for float(): easting
>>
>> Thus I am still hanging on it. Any other advice?
>>
>> Thank you so much, anyway!
>>
>> Marco
>>
>>
>>
>>
>>
>>
>> On 02/07/2012 03:44 PM, Michael Simon wrote:
>>> Marco !!
>>>
>>> Very briefly without checking your case seriously. Sorry, but try 
>>> this one.
>>>
>>> You need to create an ASCII-File with "Comma" delimiter.
>>>
>>> Does it help?
>>>
>>> Regards
>>>
>>> Mike
>>> -----Ursprüngliche Nachricht-----
>>> Von: mar...@li... [mailto:mar...@li...]
>>> Gesendet: Dienstag, 7. Februar 2012 14:54
>>> An: anu...@li...
>>> Betreff: [Anuga-user] csv formatting issue
>>>
>>> Hi All,
>>>
>>> I'm an Anuga User since a few days only, and I'm trying to set up a 
>>> simple
>>> simulation, using real terrain data.
>>> At the moment I'm concerned with file formats. I'm using Grass GIS 
>>> to export
>>> my simulation domain boundary as a polygon in csv format, but I get 
>>> a Python
>>> error concerning the way the csv file is formatted.
>>> The extent file just contains the following lines (I have erased 
>>> many pieces
>>> of information Grass adds when exporting, but I used to get errors 
>>> even with
>>> the raw exported file):
>>> 686007.82    923006.11
>>> 686145.11    923006.11
>>> 686145.11    923145.11
>>> 686003.91    923145.6
>>> 686007.82    923006.11
>>>
>>> and this is what I get on terminal:
>>>
>>>      File "/usr/lib/python2.6/dist-packages/anuga/geometry/polygon.py",
>>> line 802, in read_polygon
>>>        polygon.append([float(fields[0]), float(fields[1])])
>>> ValueError: invalid literal for float(): 686007.82    923006.11
>>>
>>> I have no experience in Python Programming, but it clearly looks 
>>> like an
>>> issue connected with the way the csv file is formatted (maybe missing
>>> headers, separators, ...).
>>>
>>> Could anyone post the content of a .csv file containing the correct
>>> information needed to describe a polygon?
>>> Thanks in advance,
>>> Marco
>>>
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>>
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