Questions tagged [africa]
For questions which are specific to the region/continent of Africa.
25
questions
2
votes
1answer
44 views
Choosing Projected CRS for Uganda
I'm curious to know what the correct projected CRS for Uganda is and if there is a national grid?
Is it ok to use UTM as it is conformal?
3
votes
2answers
111 views
Choosing appropriate projected coordinate system for Africa
I am using the NNjoin tool to compute the distance between points and a multilinestring. Both layers are in CRS 4326 and cover most of Africa.
I've understood that I need to reproject my layers to a ...
1
vote
0answers
30 views
Exclusive Economic Zone (EEZ) and Regular Boundaries one shapefile
Does anyone have an idea if there is a shapefile of the merged EEZ boundaries and regular administrative boundaries? I need this data for entire Africa. I have downloaded the EEZ boundaries from http:/...
2
votes
0answers
22 views
Extracting Sub-National admin boundaries or regions from GRUMPv1 or GPW v4
GRUMP and Gridded Population of the World (GPW), v4 provides population and demographic values for sub-national levels. However, I am unable to extract the polygons or boundaries from their datasets. ...
0
votes
1answer
107 views
Seeking accurate WMS server for Kenya?
I am looking for an accurate Map for visualizing positional data collected in Kenya. Right now I am using EXOMAPS (https://tiles.maps.eox.at/wms), in particular, a Sentinel2 cloudless view, but I am ...
1
vote
1answer
269 views
Large Scale Watershed Delineation
Using QGIS,I attempted Africa's watershed delineation taking the following steps:
Downloaded DEM from earthexplorer USGS (GTOPO30)
Created a mosaic of the downloaded DEM
Reprojected the mosaic ...
3
votes
1answer
213 views
Number of Eastern Africa countries [closed]
Are Rwanda and Burundi part of "Eastern Africa countries" or "East African countries". Some sources are differing.
2
votes
2answers
7k views
One shapefile for African continent containing counties/regions?
I use R to do my geo stuff with two limitations. First, I'm pretty new to all the geo stuff, and second I got lost while searching for a shapefile. I'm looking for a shapefile that contains all the ...
6
votes
2answers
7k views
Crop a raster file in R
I have a UN-Adjusted Population Count dataset, for the year 2015, stored in a TIFF file format (~450MB) downloaded from http://sedac.ciesin.columbia.edu/data/collection/gpw-v4/sets/browse
In R I am ...
-6
votes
1answer
203 views
Africover data, where is it now located? [closed]
Africover geographic data used to be at http://www.africover.org. It is no longer here. Where is the Africover data now located?
1
vote
0answers
136 views
Looking for Historical wind data (direction/speed) for E. Africa or greater
Does anybody know of a source for wind data ~04 - 14 for E. Africa or a larger area. I have looked at a number of sources but have not found anything for these consecutive years.
1
vote
1answer
320 views
Defining the correct AEA proj4string for FEWSnet Rainfall Data (Southern Africa) in R [closed]
I have some general questions about how to go about solving this problem:
I am trying to incorporate FEWSnet's monthly Rainfall Estimate data from 2014-2015 for Southern Africa into an analysis where ...
1
vote
0answers
486 views
Seeking free vector data on paved roads in Africa? [closed]
I have recently come across vector road data from the Africa Infrastructure Knowledge Program (http://www.infrastructureafrica.org/documents/list/roads). I found these data helpful for three reasons:
...
1
vote
2answers
475 views
Topographical Elevations for Central Africa and Cameroon
I am using QGIS and I have been faced with the problem of topographical maps. From searching online I could only find data for the United States. Google maps offers elevation contours, however I am ...
1
vote
3answers
2k views
Administrative level GeoJSON Polygons for African Countries
I'm very new to GIS and I have spent the last few days trying to find some kind of database with the aforementioned polygons with no luck. The purpose is simply to label a location at district level ...
1
vote
1answer
1k views
Seeking shapefile of administrative divisions of Cote d'Ivoire (Ivory Coast) post-2011
I've been trying to find a shapefile containing CIV's administrative divisions (preferably down to the level of sous-prefecture) reflecting the national reorganization of 2011 but have had no luck. ...
0
votes
1answer
90 views
Satellite imagery alternatives for land use/cover classifcation
Apart from Landsat imagery, which other satellite imagery is good for land use / cover studies and can be obtained free of charge?
0
votes
2answers
3k views
Orthophoto Free Download?
I'm looking for Image datas for East Africa. Specifically for Rwanda. Does anyone know if such data are available at all free? My target is to digitize roads and buildings with the help of image datas....
2
votes
4answers
574 views
Calculate percentage of land cover within a buffer in meters, not decimal degrees
I am trying to calculated the percentage of land cover within a buffer area (3000m) around my coordinates. My output is in decimal degrees but I want it in meters or at least that I can calculate the ...
2
votes
2answers
557 views
Temperature data for Africa
Where can I find daily minimum / maximum temperature for Africa, possibly in a raster format?
0
votes
2answers
91 views
Are there publicly available run-off data for Africa?
I was wondering if there are good publicly available dataset for surface run-off (water)?
I have a rough idea that surface run-off should be some function of rain-fall and soil infiltration/...
7
votes
3answers
2k views
Is there hydrologically correct water-course data for Africa
I was wondering if there are any hydrologically correct river-channel data available for download for Africa?
By hydrologically correct, I mean
the topology should be correct. Connected river ...
2
votes
1answer
798 views
Lake Victoria bathymetric data
I am trying to find bathymetry for Lake Victoria (or portions thereof).
Any GIS format and almost any resolution will do.
As a last resort a hydrographic chart will suffice.
2
votes
1answer
724 views
Seeking shapefiles for global border crossings?
I am trying to find a shapefile or set of shapefiles that contain global border crossings. Basically, what are the points of transit between one country and another.
Does anyone know if this data is ...
2
votes
2answers
665 views
Looking for a wind WMS for Europe and Africa
I was looking for a wind WMS but couldn't find. I wanted a wind WMS for Europe and Africa. Does anyone know about any?
