MapTiler to create online maps

For a project a few years ago we created a vegetation map for central and southwest Kenya (see here for more information). The map together with documentation was initially made available on CD-ROM. I also created an online map. Apart from the version mentioned in this post, I also created a version with MapTiler.

MapTiler requires a georeferences image file as input. To export the vegetation map from my GRASS GIS database to a georeferenced image, I used the r.out.tiff function.

r.out.tiff -t input=veg_ethiopia_pnv@vegetation output=vegethiopia.tif

The resulting file can be used in MapTiler to create map mashups for Google Earth, Google Maps or OpenLayer. MapTiler offers a wizard like interface which leads you step by step through the process. Continue reading “MapTiler to create online maps”


Adding Google or OpenLayers maps to your Desktop GIS

Although Google maps and other online mapping tools become more powerful, it is not always easy or straithforwards to use these tools to combine offline maps with online maps from e.g., Google or Yahoo maps.

Tools like ClickFu in QGIS make it easy to find specific features on a layer in QGIS back in Google maps (see here for an earlier post on ClickFu). But what if you to combine your own layers with the Google, OpenLayer or Yahoo maps in QGIS? Well, you use the OpenLayers plugin. Continue reading “Adding Google or OpenLayers maps to your Desktop GIS”

ClickFu in QGIS

Although Google maps and other online mapping tools become more powerful, creating and analyzing maps is still typically done using a desktop GIS. I am for example using GRASS GIS and QGIS for my work. These are very powerful tools, but what if I want to get a more detailed overview of how a certain area looks like? Or if I want to find out the towns in a certain region, or verify the existence of a lake in another? Continue reading “ClickFu in QGIS”

New CGIAR Ongoing Research Map

To create more synergy between projects and research efforts of one or more organizations, it is essential to have a good overview of ongoing projects, including where those projects are being implemented. A good example is the The CGIAR (the consultative Group on International Agricultural Research). This is a strategic partnership of 15 international agricultural research centers, working in collaboration with many hundreds of government and civil society organizations as well as private businesses around the world. The centers have offices and projects all over the world, making it rather a challenge for the managers or scientists within these institutes, but also for the many donors financing their work, to keep a good overview of what is happening and where.

Recently the CGIAR has (finally I should say) published an online map (powered by Google maps) of ongoing research projects. Continue reading “New CGIAR Ongoing Research Map”

A map of Madidi National Park

See The grunts of the jaguar on Forestalis for a nice story by Jeroen van der Horst about his trip in Madidi National Park in Bolivia. I had no clue where to find this park so decided to look it up, and to share the result for those interested…

As it turns out, it is fairly easy it is to make your own map and share it through Google maps. First you need to create a kml layer with the park boundaries. This can easily be done in QGIS using the QGIS plugin OGR Layer converter. To enable this plugin, go to the menu ‘Plugins | Manage plugins’ and select ‘OGR Layer Converter’. Now you will find ‘OGR Converter’ in the drop down menu of Plugins. Next: Continue reading “A map of Madidi National Park”