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1

The data is in some kind of projected CRS, that has coordinates in metres. You have to find out which CRS is used. For most surveying data, a high number constant has to be added to the X and Y coordinates to get the full CRS coordinates. With that, you can reproject the data to WGS84 to use them in Google Earth. GDAL cs2cs is an easy tool to mass ...


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Before I come to your question, I'll like to explain something about commercial APIs like Google Maps API or the Bing Maps API. When you use the Google Maps API, you are actually getting 3 different things: Firstly, you are getting a JavaScript Library that you can use in your application or HTML Then you get access to a set of tiles, which are created by ...


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You can't solve this problem in general. Fundamentally, if you don't have the location (with boundary) of every infrastructure location you care about, you cannot tell if any given point lies inside an infrastructure location or not. You may be able to solve this for a very small area (e.g. by taking an open data source such as openstreetmap and personally ...


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CartoDB can definitely handle a dataset that large, including filtering, infowindows, and multiple different versions of the map (i.e. styles and selected filters) using the same dataset. This, for example, is around 100mb of polygon data being styled on the fly with each click of the little menu, http://bl.ocks.org/andrewxhill/raw/8324313/ You can ...


0

Are you sure it is an API issue? I think it is a database/system coverage issue. According to news.yahoo.com/google-maps-adds-live-transit-data-selected-cities (2011-06-09) Google plans to expand its live transit coverage into other metropolitan areas worldwide. (emphasis mine). There are several cities covered by Google Transit, but i suspect it's ...


3

Welcome to GIS Stackexchange. In general all plugins are installed via Plugins->Manage and Install Plugins. Once the dialog box opens, Just start typing 'OpenLayers' in the search box and you'll see the list available plugins narrow until you can find the one you want. For PostGIS, QGIS 2.2. already comes with PostGIS connectivity capabilities out of ...


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At the QGIS Site you can find your answer: http://qgis.org/de/docs/user_manual/plugins/plugins.html#managing-plugins


4

You can set on the start of openlayers script with: function init(){ var option = { projection: new OpenLayers.Projection("EPSG:3857"), displayProjection: new OpenLayers.Projection("EPSG:4326") }; or in the layer with trasformation extent = new ...


3

The first coordinates are in WGS84 longlat degrees EPSG:4326, while the second ones are in Spherical Mercator "metres" , EPSG:3857. This is what you set the display projection to, so no reason to get worried about. In QGIS, with a Openstreetmap background, your points look like this:


2

Get the x,y coordinates of the boundaries of countries from the following website Natural Earth (thanks, Devdatta Tengshe) which has more accurate data than others I've tried. Then use ArcGIS 10.2 to open the map shape file and select the boundaries you need. Go to data management tools --features-- features vertices to points and open the generated table. ...


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I have the same problem, I want to overlay WMS layer in geoserver layer and google does not work. My WMS layer in geoserver is redesigned to 900913 to work with google maps api My code: <!DOCTYPE html> <html lang='en'> <head> <meta charset='utf-8' /> <title>My OpenLayers Map</title> <script ...


4

It appears to be a check dam or similar type of flood control structure. They help to prevent channeling and slow flows during storm events. There are lots of ways to construct them - it may be as simple as mounding up soil and covering it with a erosion control fabric as appears the case in Mapperz example or as complex as full concrete with footing and ...


4

For starters these are two different sources of imagery - so the images were taken at two different times by two different sources. Google Source Bing Source Second, the Google imagery source appears to be from 2014. Whereas the Bing imagery is from 2012. It is possibly the feature you are seeing was erected in that time. For example, I see a ...


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You can use for example site44.com. They host Dropbox folders, but offer also a password protection for the website. I like that you can map your domain to the service. The sync from Dropbox to the server is sometimes a bit slow, but overall it works nicely.


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Just a note on the matter of the point data provided to you, as others have stated you are missing the decimal part of the minutes, if the longitude was 10 44 31.9E then it would be on the other side of the clearing. Also the provider is using google earth, placing of pins on google earth is VERY imprecise. The 3D nature of it means that every location is ...


4

Due to various vagaries in the ArcGIS software, I'm going to tell you to use different coordinate reference systems. That will let you access the predefined transformations and hopefully make your life easier. Use WGS_1984_Web_Mercator_Auxiliary_Sphere instead. This one uses WGS 1984 for the geographic CRS (aka datum). The one you're using, ...


2

Datum transformation are never fully accurate, which could explain a small shift but not a difference of 30 to 40 m. A difference of 30 to 40 m is more like an error due to the absence of datum transformation, or it could be an error in the dataset that you use for the relative evaluation of your position (Google registration can be wrong in some places of ...



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