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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | Re: [gislist] HUGE X/Y Data Import into ArcView? |
| Date: |
11/21/2006 05:10:00 PM |
| From: |
Dylan Keon |
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Have you tried the "Add XY Data" dialog in ArcView? As long as the file =
is comma delimited and the first line contains the field names (e.g., =
LON,LAT,ELEV), ArcView should recognize it. You can then export the =
data as a shapefile if you want.
You can also simply add the comma delimited x,y,z text file as a table =
and export it as a DBF file.
I often create shapefiles from large datasets programmatically using =
shapelib and a dbf library like Xbase. Shapelib has bindings to various =
languages such as perl and python. See http://shapelib.maptools.org
--Dylan
On 11/21/2006 12:51 PM, Pat Waggaman wrote:
> We run up to 10,000,000 X,Y,Z=B4s often with =
> bathymetry. The most complete solution is =
> Manifold, which would import the data or link to =
> it, create the .shp and export it for opening in ARC(aic).
> =
> Alternatively the spreadsheet in Surfer is great =
> for for manipulation of that number of points and can export .csv.
> =
> Lots of RAM in either case.
> =
> Pat
> =
> At 05:21 PM 11/21/2006, Joe Luchette wrote:
>> You could load the text file into a database (Access perhaps) and then l=
oad
>> it into Arc, or you could use a text editor like Kedit to then save your
>> file as file format compatible with Arc (dbf or csv).
>>
>> Joe Luchette, GIS Specialist
>> www.MapServing.com <http://www.mapserving.com/>
>>
>> On 11/21/06, Smith, Travis <tsmith@mnsengineers.com> wrote:
>>> Hi Listers,
>>>
>>>
>>>
>>> I have a VERY LARGE ASCII text file (500,000 points and another with 1
>>> million), containing X/Y/Z points. I would like to import ALL of these
>>> into ArcView 9.1. Is there a straightforward way to do this? I first
>>> imported it into Excel, but found that Excel only imported the first
>>> 65,000 or so: doesn't help me.
>>>
>>>
>>>
>>> With Excel's record count limit, I could parse the original file into
>>> NUMEROUS subsets, but this wouldn't be very efficient. Is there a way to
>>> import the source text file directly into ArcView, or, is there a better
>>> program to use?
>>>
>>>
>>>
>>> Thanks very much,
>>>
>>>
>>>
>>> Travis
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