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How to increase accuracy

 

Hello everyone, I recently started my first project. It covers all of the Mason lodges in the state of Indiana.

I started the project by first doing 20 of the local lodges near me. I took the address of the lodges from an online database. I copy and pasted the address into the converter that is on www.stevemorse.org after I loaded them up and went to a few of the buildings. What I am seeing is I'm about 200-400 feet off at everyone I tried.

So I'm kind of wondering is that acceptable? Is there any way to efficIently get the coordinates more accurate?

I have just started with this project so it would be easy to change my method now. If it would help get them closer I'm all for it.

Thanks

coordinates

witmen wrote:

Hello everyone, I recently started my first project. It covers all of the Mason lodges in the state of Indiana.

I started the project by first doing 20 of the local lodges near me. I took the address of the lodges from an online database. I copy and pasted the address into the converter that is on www.stevemorse.org after I loaded them up and went to a few of the buildings. What I am seeing is I'm about 200-400 feet off at everyone I tried.

So I'm kind of wondering is that acceptable? Is there any way to efficIently get the coordinates more accurate?

I have just started with this project so it would be easy to change my method now. If it would help get them closer I'm all for it.

Thanks

Sounds like you are pretty close. Google Earth once set up will allow you to move the mouse around and see the coordinates where you point it with the mouse.Also can do custom pois. See http://www.poi-factory.com/node/28690 .Extra Poi Editor does a good job too. You will see it in the link

--
Charlie. Nuvi 265 wt and 2597 LMT.

POI accuracy

charlesd45 wrote:
witmen wrote:

So I'm kind of wondering is that acceptable? Is there any way to efficIently get the coordinates more accurate?

I have just started with this project so it would be easy to change my method now. If it would help get them closer I'm all for it.

Thanks

Sounds like you are pretty close. Google Earth once set up will allow you to move the mouse around and see the coordinates where you point it with the mouse.Also can do custom pois. See http://www.poi-factory.com/node/28690 .Extra Poi Editor does a good job too. You will see it in the link

In addition to what Charles has mentioned, when arriving at the destination you can stop in the driveway/entrance and save that location as a Favorite, and use its coordinates (after transferring to Basecamp or Mapsource) to update the location.

--
Streetpilot C340 Nuvi 2595 LMT

accuracy

Google and Bing maps will also display the coordinates.

--
JRoz -- nuvi 3490LMT, 3760LMT, 260W; Edge 605; Approach G5; Oregon 450

Don't get paranoid about accuracy

Accuracy from address is around values you are getting. Sometimes better, sometimes worse. But distance you are getting is pretty good and there should be no problem to find place. As people said in post above, the only way to get maximum accuracy is to actually make fix near actual place.

Sat images are good if they are up to date with ground situation. In some places that were build or rebuild from last sat picture accuracy can be no too good as well. You can see this when you display road maps over sat pictures (like Google maps can do). Sometimes road track on map doesn't go exactly over road on pic.

Thanks

shrifty wrote:
charlesd45 wrote:
witmen wrote:

So I'm kind of wondering is that acceptable? Is there any way to efficIently get the coordinates more accurate?

I have just started with this project so it would be easy to change my method now. If it would help get them closer I'm all for it.

Thanks

Sounds like you are pretty close. Google Earth once set up will allow you to move the mouse around and see the coordinates where you point it with the mouse.Also can do custom pois. See http://www.poi-factory.com/node/28690 .Extra Poi Editor does a good job too. You will see it in the link

In addition to what Charles has mentioned, when arriving at the destination you can stop in the driveway/entrance and save that location as a Favorite, and use its coordinates (after transferring to Basecamp or Mapsource) to update the location.

I plan on confirming the lodges that are near me this way. Unfortunately there are over 400 lodges in Indiana so I doubt I will be able to do them all like this.

I am going to run the same 20 building test using Google Earth. One question about it. With using it would I be better off using Google Earth for the entire project, or is there a way I can finish the project using stevemorse.Org then load all of the POIs at once into Google Earth and then fine tune them? I'm not familiar with what all Google Earth can do.

One thing I noticed with stevemorse.Org was it seems really quick to get coordinates from.

Thanks

EPE - Extra POI Editor

witmen wrote:

I plan on confirming the lodges that are near me this way. Unfortunately there are over 400 lodges in Indiana so I doubt I will be able to do them all like this.

I am going to run the same 20 building test using Google Earth. One question about it. With using it would I be better off using Google Earth for the entire project, or is there a way I can finish the project using stevemorse.Org then load all of the POIs at once into Google Earth and then fine tune them? I'm not familiar with what all Google Earth can do.

One thing I noticed with stevemorse.Org was it seems really quick to get coordinates from.
Thanks

I confirm my POIs by saving the entrance to the parking lot and comparing it to the file I created, but I agree it isn't possible to confirm all locations! You can use Google Earth to see where the entrance is to confirm, but there is an easier way.

I would recommend using Extra POI Editor to create the POI. I think it would be the easiest method to use and you can set the coordinates based on a satellite view.

http://turboccc.wikispaces.com/Extra_POI_Editor

You can do a search here for many threads regarding the use of this software.

--
Streetpilot C340 Nuvi 2595 LMT

It would depend

on how you are building the file. Are you building in txt or excel?
I use EPE (extra poi editor) which geocodes using Google. But it only does it 1 at a time. And I am ok with that.

If your averages are good with what you are using I would say you are ok. Verifying with another program is good because the batch geo coders are usually not that great.

When all is said and done, do not be alarmed that you might get some changes coming through because that is what we do here. We use the lists and if there are corrections we let the maintainer know. That is why we have good lists.

--
Nuvi 650 and 1350.

coordinates

witmen wrote:
shrifty wrote:
charlesd45 wrote:
witmen wrote:

So I'm kind of wondering is that acceptable? Is there any way to efficIently get the coordinates more accurate?

I have just started with this project so it would be easy to change my method now. If it would help get them closer I'm all for it.

Thanks

Sounds like you are pretty close. Google Earth once set up will allow you to move the mouse around and see the coordinates where you point it with the mouse.Also can do custom pois. See http://www.poi-factory.com/node/28690 .Extra Poi Editor does a good job too. You will see it in the link

In addition to what Charles has mentioned, when arriving at the destination you can stop in the driveway/entrance and save that location as a Favorite, and use its coordinates (after transferring to Basecamp or Mapsource) to update the location.

I plan on confirming the lodges that are near me this way. Unfortunately there are over 400 lodges in Indiana so I doubt I will be able to do them all like this.

I am going to run the same 20 building test using Google Earth. One question about it. With using it would I be better off using Google Earth for the entire project, or is there a way I can finish the project using stevemorse.Org then load all of the POIs at once into Google Earth and then fine tune them? I'm not familiar with what all Google Earth can do.

One thing I noticed with stevemorse.Org was it seems really quick to get coordinates from.

Thanks

Just use Google Earth to compare the coordinates.The advantage of moving the mouse around to fine tune the coordinates and using satellite view on GE is a plus. Using Google Earth to do custom pois is not really that hard after you put in a few locations and see how it works. Use what you feel comfortable with. Extra Poi Editor is a tool you should have for custom pois. It does many things. Sooner or later you will want to do gpx files and build alert distances into gpx files. You will find EPE is very useful.

--
Charlie. Nuvi 265 wt and 2597 LMT.

Thanks for all of the suggestions.

I am currently creating the poi using notepad. I'm sure there are a lot of different ways to do it. I did it that way at first just cause I had it already. I was actually happy to see I got it working at all. Even added a custom icon. So I am developing some understanding of it. Now I just need to figure out the best method to use for accuracy.

I have gotten a lot of suggestions here. I will be busy trying them out. Thanks again

Welcome witman

witmen wrote:

...
I started the project by first doing 20 of the local lodges near me. I took the address of the lodges from an online database. I copy and pasted the address into the converter that is on www.stevemorse.org after I loaded them up and went to a few of the buildings. What I am seeing is I'm about 200-400 feet off at everyone I tried.

So I'm kind of wondering is that acceptable? Is there any way to efficIently get the coordinates more accurate?
...

You have already gotten good advice from the responses above. However, I want to encourage you to read some other posts about "accuracy". Maybe they will help you understand why you are "about 200-400 feet off".

http://www.poi-factory.com/node/34378?page=1

http://www.poi-factory.com/node/26344

http://www.poi-factory.com/node/34616

We often have this debate on exactly where the coordinates should point. The answer may depend on what the POI file might be used for. If, for example, a user wanted to be alerted in advance about some establishment that was ahead "along the route", then the actual coordinates need to be no more than 30 meter perpendicular to the "route" on which the vehicle is traveling.

If just getting in the general area of the POI is acceptable, then just having the coordinates be somewhere around the building is OK.

To get an idea of accuracy, put your address into Google and then zoom in to see where the pointer really is. Was it where you expected it to be?

Again, welcome. Thanks for jumping into a project.

.

pwohlrab wrote:

I use EPE (extra poi editor) which geocodes using Google. But it only does it 1 at a time.

Actually, EPE does do batch geocoding. It's under the "Tools" menu.

--
TomTom GO 720 (for driving), Samsung Galaxy Nexus (for walking)

My personal method

After locating and getting coordinates for over 2200 rest area "locations" I swear by getting accurate coordinate information using Google Earth. I use other applications, such as Streets & Trips, to get general location but Google Earth appears to be the most accurate.
Works for me !

--
MrKenFL- "Money can't buy you happiness .. But it does bring you a more pleasant form of misery." NUVI 260, Nuvi 1490LMT & Nuvi 2595LMT all with 2014.4 maps !

How do you use EPE?

MrKenFL wrote:

After locating and getting coordinates for over 2200 rest area "locations" I swear by getting accurate coordinate information using Google Earth. I use other applications, such as Streets & Trips, to get general location but Google Earth appears to be the most accurate.
Works for me !

First - let me thank you for all the great work on the rest area file. I am sure I speak for all of us.

I was wondering how you use EPE, if at all? Most of the files that I have done are very small and I get the addresses from websites - so they are not very adaptable to batch geocoding. Rather than use Google to get coordinates, I have used EPE - which uses Google Earth - while creating the entries for me.

Once EPE has geocoded an entry for me, I zoom in to see if I want to move the pointer to the street entrance. Then I repeat for everything I want to enter.

To amplify a bit on the point that the data I have used was not in a format that would let me easily cut and paste into a file that I could batch geocode: If I could have created a, say, csv file that had blanks in the long and lat fields, but had the name and address fields, then I would have used EPE to read that file and let EPE batch geocode for me.

I am using it similar to jgermann

jgermann wrote:
MrKenFL wrote:

After locating and getting coordinates for over 2200 rest area "locations" I swear by getting accurate coordinate information using Google Earth. I use other applications, such as Streets & Trips, to get general location but Google Earth appears to be the most accurate.
Works for me !

First - let me thank you for all the great work on the rest area file. I am sure I speak for all of us.

I was wondering how you use EPE, if at all? Most of the files that I have done are very small and I get the addresses from websites - so they are not very adaptable to batch geocoding. Rather than use Google to get coordinates, I have used EPE - which uses Google Earth - while creating the entries for me.

Once EPE has geocoded an entry for me, I zoom in to see if I want to move the pointer to the street entrance. Then I repeat for everything I want to enter.

To amplify a bit on the point that the data I have used was not in a format that would let me easily cut and paste into a file that I could batch geocode: If I could have created a, say, csv file that had blanks in the long and lat fields, but had the name and address fields, then I would have used EPE to read that file and let EPE batch geocode for me.

I am updating my Best Buy file. To be sure I get them all I am looking at them in a csv format and highlighting the ones I have just added or are already in the file that are good (or changed). I am doing it by state so I don't lose where I am.
I then use EPE and choose "ignor" so I do not lose the entry. I then look at each one and verify (if I can) the locations. I do not use the batch geocode in EPE.

--
Nuvi 650 and 1350.

Ok

Thanks again to everyone for all of the help. I have done a lot of playing around with the different methods suggested and I have started to really like using Extra POI Editor, I was having a good time with it. Got 40 of them done real quick. Then I saved.

Well I went and opened up what I had been working on and I found out that most of the information I had entered was gone. I know this was user error. But I'm wanting to make sure I don't make the error again.

Here is an example of the information I was entering and what was shown on the preview screen of EPE
"

Boone No. 9
810 Fordice
Lebanon, IN 46052
www.boonelodge.org

Meeting Time: 7:00PM on 2nd Monday "

Now after I open it all I am seeing for the POI and the preview screen is the coordinates, the name and the first line of the Address. Everything else is gone.

I am guessing this is caused by the format I saved it as. Which was garmin .csv

Would that have caused it?

What format would be best for the information I posted above. Also I should I be posting the information. I noticed that it works either way. I can post all of my information inside of the "Address Field" and it looks good. Or I can post the information in the description and then break the address up by street, city, state and zip. But either way looks good. So which should I use.

Sorry for all of the questions and thanks again. I'm really determined to figure this out and make it work lol

GPX format

My preference is to use GPX format. It retains the format with out any extra work on settings like a CSV. GPX handles screen formatting and telephone numbers much easier than CSV does. It is also easier to program alerts. So as long as you are using EPE I suggest that you save the file as a GPX.

Again, that's my preference.

Thanks for taking the plunge.

--
Zumo 665, (2) Nuvi 765Ts & 1450LMT | 2005 Harley Road King, Black Cherry Pearl / Black Pearl

One question

My primary GPSr is a Garmin 62s. I use it for geocaching as well as city navigator. All of the geocaches I load up as a GPX file. I just drop them into a folder inside of the garmin directory called GPX and the 62s displays them as geocaches.

So if I save my POIs as a GPX file will the unit know to display them as POIs or will they be grouped in with my geocaches?

POILoader

I'm not famiiar with the 62s and don't geocache so I can't tell you for sure on your unit ... but

When using Custom POIs for navigation and alerts on most automotive / motorcycle Garmin units they must be compiled using Garmin's POILoader program which creates a file with a GPI extension. They then get placed in the Garmin/POI folder in the unit or on the SD card.

If you just want them to show up under the Favorites icon for navigating to, but no alerts, a GPX file can be directly loaded into the Garmin/GPX folder. Large files should be loaded as the compile GPI Custom POIs though because I think most units have a limited number of Favorites they can store.

Garmin's POILoader program will compile both the GPX and CSV file formats.

--
Zumo 665, (2) Nuvi 765Ts & 1450LMT | 2005 Harley Road King, Black Cherry Pearl / Black Pearl

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