[GRASSLIST:7693] Re: v.in.ascii

David Kindem dkindem at chartermi.net
Sat Jul 23 10:23:08 EDT 2005


I'm still struggling a bit with this.  I have a text file with the  
following site information:

-85.74792719|42.98678484

I use v.in.ascii to generate a vector layer.  When I try to display  
it in my location, I receive an error ("command not found").

If I set use g.region to set the region to match the vector layer, my  
point displays.  Using g.where to identify the location, I get:

EAST:             NORTH:               LON:               LAT:
       -85.76293174        42.98644948       -91.48951223          
0.00038771

So it seems that Grass is trying to interpret my decimal degree  
locations as northing and easting data.  Does that seem to be the  
case?  If so, do I need to include additional parameters in  
v.in.ascii to get the software to recognize decimal degrees?

Thanks for any suggestions.

Dave

On Jul 18, 2005, at 2:35 AM, Hamish wrote:

> Dave:
>
>> I'm attempting to us v.in.ascii to import sites.  Things work fine
>> when I use Eastings/Northings.  However, I would like to import
>> points in latitude/longiture.  When I attempt to import positions
>> such as:
>>
>> 85:46:05.14203W | 43:00:07.320715N
>>
>> I receive the error message:
>>
>> ERROR: x column is not of number type
>>
>> Is there a way to have the program recognize lat./long as legitimate
>> entries?
>>
>
> Ian:
>
>> Dave (or anyone else),
>> I was wondering if you ever found out how to import lat-long data  
>> into
>> grass?  I would like to do the same thing.
>>
>
>
> As it stands only numerical data can be used for x,y columns.
>
> It should be possible to change it to try G_scan_easting() and
> G_scan_northing() if a coordinate column is of type string, but it
> hasn't been done yet.
>
> You'll have to format the data as +/- DDD.DDDDDDD for now.
>
>
> Hamish
>

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