[Gdal-dev] Measured Values for Shapefile read & write

[Nelson, Dean]

Craig,
 
We would like our product to ingest any type of shape file (projected or
lat/lon) and be able to run with it. However, as in the "[Gdal-dev] Is
ogr2ogr the tool to use?" thread, I have some shapefile data from the
USGS/Hydro1k project that is projected from a point and all of the
values in the polygons are x,y values. I needed to convert to a Lat/Lon
shapefile. I did it via ogr2ogr and the resulting output was placed 17km
north of reality.
 
I was looking for a kludgy fudge factor ;-)
 
 

Regards,

Dean Nelson   
Enterprise Electronics Corp


	-----Original Message-----
	From: Craig Hunter [mailto:craigrthunter at gmail.com] 
	Sent: Tuesday, July 24, 2007 12:52 PM
	To: Nelson, Dean
	Cc: gdal-dev at lists.maptools.org
	Subject: Re: [Gdal-dev] Measured Values for Shapefile read &
write
	
	
	Dean,
	 
	Are you referring to an offset, in the sense you have a point on
a line and you want to project it 100 meters off to the left side (90
degrees) of the line?  In that case, no, but I'm pretty sure that can
already be performed with the ogr library as it is now. 
	 
	I'm referring to measured values (M-values) that are included in
the geometry and can be used for dynamic segmentation.
	 
	(Sorry for the repeated message, I left the mailing list off my
initial reply)


	On 7/24/07, Nelson, Dean <dean.nelson at eecradar.com> wrote: 

		Craig,
		Would this be like a projected shape file (i.e. x,y off
of a median) ?
		 

		Regards,

		Dean Nelson   
		Enterprise Electronics Corp
		

		

			-----Original Message-----
			From: gdal-dev-bounces at lists.maptools.org
[mailto:gdal-dev-bounces at lists.maptools.org] On Behalf Of Craig Hunter
			Sent: Tuesday, July 24, 2007 11:25 AM
			To: gdal-dev at lists.maptools.org 
			Subject: [Gdal-dev] Measured Values for
Shapefile read & write
			
			
			Hi,
			 
			I performed a hack to the OGR source in order to
read and write shapefiles with measured values.  If others may find this
of value, I'll work on a patch?
			 
			Also, the SDE driver only provides read access.
Is there some technical or proprietary issues with performing write
access to SDE? or has this not been developed due to a lack of interest?
			 
			Thanks,
			Craig Hunter.


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