Map

[reynold522]

Hallo

I logged the DGPS, accelerometer ,gyroscope, odometer data  from a running machine to database. Now I already read those data from database and want to do a mapping for this route. Because my DGPS can reach centimeter accuracy, that means for latitude and longitude it can reach "74.07796786706" and "12.11335952781",eleven numbers after degree. I want to plot the route for the this machine, Google maps only support  6 number after decimal point. Do anyone know some other methods to plot route.

[Ioannis K.]

Hello Reynold,

actually, do you really need such a high resolution? Since this depends on the job you want to accomplish, the accuracy requirements of the project define the positions after decimal point. E.g., road construction mapping requires precise determination of position.

What also matters is the scale of the projection, which means that if you want to map a road on paper, then you won't need such a resolution, since you cannot plot it.

In order to plot points with this accuracy, you should load maps on CAD programms like AutoCAD, or integrate your data in GIS programms like ArcGIS.

I don't know any other free services on the net which would achieve a higher resolution.

Cheers, Jannis

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Thanks to Ilias Daras from GFZ-Potsdam for his contribution to this post.

[reynold522]

hey Jannis,

our project need the accuracy in centimeters, thanks for your suggestion, i will check the ArcGIS.

cheers, reynold

[Ioannis K.]

You have to go behind the borders to find out... Good luck with ArcGIS!

[SnowMule]

Google Maps only takes out to 6 decimal places because that's really all the more accurate it can get.  The imagery is down to about 2 meters, better in some places, worse in others... but the alignment of the images can be off by several meters.  I'll download tracks off my GPS after a day of riding and plot them in google earth.... a lot of times the trail i'm riding is offset from my track. 

The data you have is cm-accurate; it sounds like you want to draw a connect-the-dots on a map?  You're going to need a map that's cm-accurate as well.  The free Google stuff isn't the answer for that... University libraries may be a good starting point, USGS could probably help you out too.

A few more questions you need to ask yourself... What features are you interested in... Terrain? Roads/Structures? Political boundaries? Water features?  How big of an area do you need to cover?  ArcGIS is a good tool for precision GIS work, but it may not be the answer to your question.

[JLeo]

I am looking to do something similar to your project and we are considering ArcGIS as well. Did you manage to incorporate it in the Labview environment (ActiveX, .NET) or did you have to use it as a standalone software ?