Questions tagged [global]

For questions regarding world-wide study or data.

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1answer
42 views

Can percent overlap of polygon layers be calculated in geographic coordinate system? [duplicate]

I have two global polygon shapefiles in WGS84, and I would like to generate spatial stats on the % area of one shapefile that is overlapping the other. I understand that geometric calculations such as ...
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1answer
81 views

Tool in Tool Palette as a parameter for Button

I built a simple toolbar with Tool Palette and Button. Button should make a selection according to a global parameter which can be set by selection of Value in Palette box. I.e. if I choose number "1"...
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2answers
152 views

Seeking data for global base map?

I'm part of a group making global visualization software. I need to find earth imagery (visual range and hopefully IR as well) between 500 m/pixel and 75 m/pixel. The blue marble next generation ...
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1answer
99 views

List of global geopolitical areas? [closed]

I'm building a fake-data maker in R (a package that will quickly generate realistic data for testing and training purposes). In order to be able to do geographical analysis stuff, I'm looking for a ...
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1answer
71 views

Changing global template features to reflect in other maps

I'm working on a project that involves 20+ map figures. We currently are working with a .mxd in which we are using as a template for these figures. It's most likely that our client will want some ...
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1answer
270 views

Seeking global (worldwide) list of street abbreviations?

I'm looking for a list of street and road names abbreviations (e.g Street -> St, Avenue -> Ave. and so on). All I've seen are country-specific lists. Is there a global one, or at least a dataset to ...
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0answers
88 views

Global NetCDF datasets with station time series data?

I´m working on a web application which uses temperatur and precipitation data. Currently i´m using only globally interpolated, multidimensional rasterdata from terrestrial stations (queried with x,y,t)...
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3answers
4k views

Global shapefile of biomes/ecoregions?

I'm looking for a shapefile with this kind of information, only at considerably higher detail. In North America, ecoregions are classified by levels and grouped by vegetation type at much higher ...
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2answers
179 views

What CRS to use when creating buffer all over the world in QGIS

I trying to create buffers (50km) around many points all over the world (airport locations) in QGIS. I will then overlay these buffers with a world-wide raster dataset so I can extract information ...
2
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1answer
977 views

What methodology is used to quantify global warming?

This article in the LA Times says: The first detailed global temperature measurements were recorded in 1880. Since then, nine of the 10 warmest years on record have occurred since 2002, according ...
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2answers
273 views

medium resolution Earth coastal outline in tabular form

I'm generating my own images in Python and Blender. What I need is data that I can read directly from a table/file to draw coastlines with 1 to 10 kilometer resolution. I'm not familiar with high ...
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2answers
222 views

does a cartoDB world shapefile exist?

Does anyone know what cartoDB uses for country boundaries on their standard basemaps e.g. cartodb world flat blue? A shapefile would be really useful as doing global maps (using country polygons) look ...
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0answers
115 views

Up-to date agricultural land use

I'm looking for data on commodities (corn and potato). Tools such as USDA's cropscape (http://nassgeodata.gmu.edu/CropScape/) are great but lack global cover. I found this dataset http://www....
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0answers
33 views

Group cities into MSA/Agglomerated areas

I've been asked to do some research where I compare survey data to some population numbers. Unfortunately, I think it is likely the case that people who live in smaller cities that are close to large ...
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2answers
367 views

Seeking global roads information preferably with traffic volume?

Im looking for a high quality global roads database. The only constraints I have is that it should be completely open (even foe commercial use) I have looked into some publicly available databases ...
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3answers
807 views

World map with clear difference between land, sea and inland waterways

I'm looking for a free high resolution map that clearly indicates the land and sea in the world. I need it to calculate distances over sea between ports. Additionally it should also include inland ...
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2answers
581 views

Does a 'light' version of global OSM map exist?

I need a global map for my project, but without POIs and other unimportant objects for me. Only big cities and country borders. My project will work in offline network therefore I need a local server ...
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1answer
48 views

Creating other shared objects like map (CMV)

We need to create an object which is accessible from the controller and widgets. Rather like how we can currently access the map object. Could anybody shed light on how this can be done?
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1answer
106 views

Looking for smallish raster of global elevation data

I'm trying to find elevation data for the whole globe for a simple mapping application and I'm not having any luck. I really don't want anything fancy, just something like a 4000x2000 raster of ...
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2answers
1k views

Where can I find a global geocoding dataset based on postal code?

I'm looking to purchase a dataset (with a contract for updates) of postal codes to lat/long and city names for as much of the world as possible. Ideally the data would look like: country_code ...
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1answer
594 views

Where can I download Real time Traffic and weather data for the world?

Where can I download real time data for traffic and weather? I'd like to use it as an overlay on a mapping service of my choice (eg. Google maps, OpenLayers etc.)
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1answer
255 views

Is there a name for map projections that produce two disks?

I've seen lots of world maps in the shape of two disks that touch, each one a separate projection of one hemisphere onto a disk -- usually the Western Hemisphere and the Eastern Hemisphere -- so ...
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2answers
3k views

Projections appropriate for global analysis that preserve area and that preserve distance (but not necessarily in the same projection)

I am looking for a projection (or a set of projections) that decently preserve distances so that I can buffer every country in the world and have a similar level of minimal distortion for each. I ...
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0answers
111 views

trim a global quadtree by population density?

I'm looking for a way to match people so as to find other members that are 'nearby' - not for those dreadful 'girls near you' ads, don't worry ;_) Of course 'nearby' in the country is a different ...
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1answer
266 views

Global Geo Api places

I'm looking for a global geoapi for the places. I see Facebook places, google places, simplegeo, factual etc... Why not create an API that includes all places? Free and easily accessible as ...
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14answers
80k views

Seeking administrative boundaries for various countries?

After learning about the US Census's TIGERLines datasets I've working with the following layers, from the USA data Country boundaries State boundaries County boundaries City boundaries ZipCode/...