For questions regarding world-wide study or data.

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0answers
21 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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1answer
60 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
28 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
62 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, ...
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2answers
61 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 ...
0
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1answer
29 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?
2
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2answers
106 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
34 views

I need global runoff GIS layer that is not from the GRDC

I need global runoff GIS layer that is not from the Global Runoff Data Centre (GRDC). I need something with a better resolution, but the GRDC dataset (UNH/GRDC Composite Runoff Fields V1.0) is the ...
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0answers
46 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
15 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
131 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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2answers
278 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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0answers
63 views

Zonal Statistics as Table having problems with Mosaic Dataset

I have a mosaic dataset of forest cover around the globe for the year 2000 (each cell's number contains the percent of forest cover in that area). I have randomly selected a large number of points ...
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0answers
33 views

Climatic variable data

Could someone suggest to me where to find free, very high resolution raster maps of the world of climatic variables (such as temperature, precipitation, etc.)? I need a monthly temporal resolution ...
2
votes
1answer
38 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 ...
2
votes
2answers
115 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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0answers
61 views

Ádvance Python Field Calculator - Global Expressions [duplicate]

I am trying to create a global expression that populates a new field based upon existing values in an attribute table. I am using QGIS Dufour and the Sextante toolbox, and the "Advanced Python Field ...
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2answers
1k 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 ...
1
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1answer
390 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.)
6
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1answer
158 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 ...
1
vote
1answer
195 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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0answers
79 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 ...