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Texas Historical Markers

 

I thought it would be a great project. 'Get a POI for all the Texas Historical Markers'

I found a site 'Texas Atlas' that has a database of all the markers. Over 12,000. It also contained a list of lat long's for over 6,000. So I converted the 6,000 into a file and plotted it on Google. Wow! Are they screwed up. Most of the markers were in the same city as their lat long indicated. Some were close enough to use. So I went back to the main DB. It had the UTM of most of the 12,000 sites. So I found a site that would batch convert the UTM to Lat Long. Once more many of the POI's were wrong, unless you believe they have markers out in the Gulf of Mexico, or in Mexico, or OK!

So I have a POI file of 6,000. If anyone is interested in looking for some of them in their local area, let me know, I'll send you the list. Or you could download the data base from ftp://ftp.thc.state.tx.us/historical_markers/

Looks interesting

You are right, some are not very close at all...some are usable. Would take a LOT of work.

--
........Garmin StreetPilot c550 / Nüvi 765...........

Emailed State

I emailed the state atlas and told them there database was inaccurate. I have not heard anything from them.

Texas Historical Markers

Keep me up to date on this. I would like to contribute if possible. I believe there are several books out on these markers in Texas. Hopefully they haven't taken coordinates from the inaccurate database.

Batch conversion site?

What was the site you used for the batch conversion. I've been looking at this and converting the coordinates one at a time. A batch converter would make things easier and I have an idea why some of the coordinates were off. But I'd need to see the converter site to know whether I'm on track or on crack.

Historical markers

rustic23 wrote:

I thought it would be a great project. 'Get a POI for all the Texas Historical Markers'

I found a site 'Texas Atlas' that has a database of all the markers. Over 12,000. It also contained a list of lat long's for over 6,000. So I converted the 6,000 into a file and plotted it on Google. Wow! Are they screwed up. Most of the markers were in the same city as their lat long indicated. Some were close enough to use. So I went back to the main DB. It had the UTM of most of the 12,000 sites. So I found a site that would batch convert the UTM to Lat Long. Once more many of the POI's were wrong, unless you believe they have markers out in the Gulf of Mexico, or in Mexico, or OK!

So I have a POI file of 6,000. If anyone is interested in looking for some of them in their local area, let me know, I'll send you the list. Or you could download the data base from ftp://ftp.thc.state.tx.us/historical_markers/

http://www.poi-factory.com/node/10165

--
Anytime you have a 50-50 chance of getting something right, there's a 90% probability you'll get it wrong.

Markeroni.com

Might want to take a look at Markeroni.com. It's an historical marker logging site. Might help. I have an account on there and have logged a few of the TX markers near me (north of Dallas).

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/\^~BpACKer~^/\

I am using the Texas Atlas

I am using the Texas Atlas site to create GPX files for each county in Texas. I live in Montgomery county and so I have started in south east texas. I have uploaded about 10 counties so far. Check out a few and let me know what you think. I am using GeePeeEx Editor to create the files. I was trying to cross verify each marker location but that was taking far too long. I have decided to just put the data in as it come from the Texas Atlas site but I am doing a quick view to make sure the coordinates are not placing the marker in the Gulf or in a different county. Some of the coordinates are totally wrong.

GeePeeEx Editor is pretty helpful.

preembargo wrote:

What was the site you used for the batch conversion. I've been looking at this and converting the coordinates one at a time. A batch converter would make things easier and I have an idea why some of the coordinates were off. But I'd need to see the converter site to know whether I'm on track or on crack.

I have seen your GPX file for Texas markers. How did you create the file? I use GeePeeEx Editor. I am trying to create individual GPX files for each county in Texas. I have created and uploaded about 10 so far. I take the raw data from the Texas Atlas, convert the coordinates and then upload the CSV files into the editor for final editing. I can create a GPX file from raw Texas Atlas data in about 10 minutes. I do a very cursory overview of each marker coordinate to make sure they are in the correct county. If the coordinates are not available I use these web sites to get location information...

http://www.9key.com/markers/index.asp
http://www.historicmarkers.com/

These site usually will give pretty good location information. I then use the mapping feature in GeePeeEx Editor to approximate the marker location.

It can be rather slow but most counties only have a few markers without coordinates.

Send me an email if you have questions

jgruss01@swbell.net

Historical Marker Locations

Another good source of marker locations is:

StoppingPoints' Texas Historical Markers: http://www.stoppingpoints.com/texas/

--
George Smith

I know this thread is old

Rustic23 - if you are still active I am interested in your POI file with the Texas Historical Markers. I live in Travis County and I am interested in the markers in my central Texas.

Thanks!

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