[Talk-us] tiff, dwg and nad83

Ian Dees ian.dees at gmail.com
Wed Apr 18 21:02:11 BST 2012

On Wed, Apr 18, 2012 at 2:38 PM, Nathan Edgars II <neroute2 at gmail.com>wrote:

> On 4/18/2012 3:31 PM, Charlotte Wolter wrote:
>>  Yes, imported data can create issues like that. The same thing happens
>> with schools. Yes, it takes some effort to separate them and move them
>> to their correct locations, but I think it's worth it. It's better to
>> have the data than not.
>> What do other people think?
> I think that, given the large number of errors, schools and churches
> should not have been imported from GNIS.
> It's interesting if you look these up on the GNIS site. What's the source
> for them? Well, they got a local phone book and looked up schools and
> churches :)

Most of these came from scanned USGS maps. In some cases they were OCR'd
and in other cases they were typed in by a human. I believe those maps had
similar symbology for a "historical" POI and "current" POI, thus all the
old/out of date information.
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