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Questions tagged [north-america]

North America is a continent that comprises Northern America, (the) Caribbean, and Central America.

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What is the accuracy and precision of bearings measured using Google Earth

For North America, what are the accuracy and precision that the bearings of decameter- to kilometer-long features, e.g lineaments and oriented lakes, be measured using Google Earth? Can these ...
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What datums were used in North America before NAD27?

What datums were used in North America before NAD27? I googled around on this without luck. Also I found an old nautical chart of Lake Michigan, dated 1876, which states: Longitudes on this map ...
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Appropriate Japan US comparison map

I would like to create a map in QGIS comparing the relative size and latitudes of Japan to the US. There are a few websites like mapfrappe which allow this using Google Maps, but I would like to be ...
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Source for North American public boat and kayak launch sites?

Does anyone know of a good source for North American public boat and kayak launch sites for mapping in a GIS. I would prefer a web service.
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Coordinate system for South and North America together?

I am working on project where i need south and north america together and i search for the best coordinate system. I have choosen wgs 1984 but distortion in north part is very big.
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Seeking Online Large Format Map Printing Service based in North America? [closed]

I am looking for an online large format printing service. My requirements for such a service are: large format (ANSI E +/-) high resolution double sided paper of different quality based in North ...
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Is there a dataset for the spatial extents of historic levels of the Great Lakes since the Last Glacial Maximum?

Is there a dataset for the spatial extents of historic levels of the Great Lakes since the Last Glacial Maximum? More specifically, we are looking for the maximum level of the Great Lakes after 5,000 ...
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“Official” delineation of North American mountain ranges

I need to subset mosaics of remotely sourced data to the extents of several prominent North American mountain ranges, starting with the Sierra Nevada. After searching for the boundaries of the range ...
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How do I interpret this proj4string and why doesn't changing units change its resuls? [closed]

I'm new to GIS - I have a background in statistics. I have the following proj4string: '+proj=lcc +lat_1=40.66666666666666 +lat_2=41.03333333333333 +lat_0=40.16666666666666 +lon_0=-74 +x_0=300000 +y_0=...
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Aligning data in GCS_North_American_1983 and GCS_North_American_1927 using ArcGIS for Desktop?

I have tried everything that I have found on this site so far and nothing has worked! I have used ArcGIS for 3 years but had never had to mess with coordinate systems as the 1st company I worked for ...
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4answers
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Polygon Shape Data for North America

Does anyone know where I can get data like this for north America (for use in SSRS). It does not have to be exploded. If I add Bing maps my 36 page PDF is 250MB when exported!
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Detailed Bathymetric/Bathymetry contour data (0-200M)

I am looking for free Bathymetric contour data in shapefile format for depths between 0-200 meters for North America. I prefer contours at 10 meter increments, but will take whatever I can get. I ...
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How can I transform GCS_WGS_1984 to GCS_North_American_1983?

I need to convert a GCS_WGS_1984 data set to NAD_1983_UTM_Zone_14N. What transformation should I use?