Rasters Rev 2018: Bookings open!


I am delighted to announce that bookings are now open for Rasters Revealed 2018. Please use the following link to purchase your place at the conference and make sure that you attend this engaging event.

BOOK HERE: https://bookwhen.com/geoger/e/ev-scsq-20180411094500

The 2017 conference was a sell-out event, and based on the feedback I’ve had, it looks as if 2018 will be no different. Make sure you book your tickets ASAP to avoid being disappointed.

Also, the call for talks and workshops for Rasters Revealed 2018 is currently open and accepting abstracts.

Submit abstracts here: http://ow.ly/AaIe30gkqlc

The 2018 meeting has so far been generously sponsored by three organisations whose details can be found at the following link. I am looking for at least two more sponsors so that the conference is able to offer all the features I’d like to see, so if your organisation can help then please get in touch.

Sponsorship options here: https://rastersrevealed.net/sponsors/ 

The meeting is taking place on the 11th April at the Urban Innovation Centre in London, and is great value at £55 for the entire day.

Rasters Revealed is a one day meeting, held to discuss all topics to do with creating, managing, analysing and disseminating spatial raster data. The idea is to share experiences and knowledge of datasets across disciplines. There have been some great abstract submissions so far, but we need more! Abstracts are welcome on all related topics, so please do submit an abstract.

I really look forward to seeing you in London in April for what promises to be a fascinating day.

All other details are available on the meeting website, https://rastersrevealed.net/, on the ‘Updates & Blog’ page. In the meantime, feel free to circulate this information as widely as possible and share on social media (#rastersrev).


Rasters Rev 2018: What?

If you weren’t at Rasters Revealed 2017 (and why not?) and you haven’t heard of Rasters Revealed before, then you are probably wondering what it is all about.

The plan is to put on a one-day meeting called Rasters Revealed in April 2018. This meeting will focus on the use of geospatial raster data of all kinds as well as how it is managed, distributed, processed and analysed. Linked to this will be issues around what raster-centric software is used to complete these tasks, as well as consideration of open data and free and open source software. There is a loose theme for the upcoming conference: time-series and temporal data (although all inked to gridded spatial data in some way).

As with the 2017 event, there has already been a large amount of interest from a range of users of geographic raster information. The point of the this conference is to put on the sort of meeting that we, the organisers, would want to go to and that we don’t think exists at the moment. Judging by the response in 2017, many of you agree with us. We want to learn more about what is happening in industry, academia and government in all aspects related to our favourite data type: raster.

The meeting is being hosted by Alastair Graham of Geoger Ltd., with support from Andy Murdock and Geoff Smith. Updates about the meeting will be made through this website, and registration is planned to open in January 2018.

In the meantime you can use the hashtag #rastersrev to discuss on Twitter. See you at the meeting!

Sponsors Blog: Logical Levels

Making global challenges tractable through use of geospatially constrained domain-specific analyses


Many of the major challenges that the world faces are associated with human land-use. Examples include:

  • anthropogenic climate change, where ca. 40% of greenhouse gas emissions from agriculture and deforestation
  • imbalances in the global nitrogen cycle which is associated with the use of nitrogenous fertilisers in agriculture
  • global water scarcity, where ca. 70% of global water usage is for irrigation in agriculture and horticulture
  • hunger and food security, where farming is directly responsible for food production, but where many of those most vulnerable to starvation are living as smallholders in rural communities

These problems manifest themselves globally. They are in each case, however, the result of particular land usage which results from complex interactions between human decision-makers, natural processes, and governance systems. The following brief exposition sets out an approach to modelling such problems.

Partitioning the problem

The core hypothesis is that these problems can be usefully partitioned into the interactions between four distinct levels:

  1. macro – global and systemic e.g. global climate systems, global economic markets, global nitrogen cycles.
  2. meso – political, economic, social, and environmental governance systems. These vary by jurisdiction. For example, the policy environment for farmers in the UK is partly regulated by the EU, partly by Westminster, partly by the devolved nations of the UK (England, Scotland, Wales, Northern Ireland), and partly by other entities (planning authorities etc.)
  3. micro – firms, families, individuals. This is the level of agency where people and organisations make decisions and implement them
  4. nano – animals, plants, soils, water, atmosphere. This is the level of natural capital and ecosystem services. With farming it is closely linked to plant and animal production and the positive and negative externalities that such production creates.

The Logic of the Levels

Each of these levels has its own appropriate mode of analysis or “logic”. These are used by the associated academic disciplines and technological approaches. The logics are:

  1. logic of global systems
    • climate change models, general equilibrium economic models, etc.
  2. logic of collective action
    • political science, governance, international relations, anthropology, group psychology, sociology, macroeconomics
  3. logic of the situation
    • microeconomics, rational choice theory, psychology, organisational and management studies
  4. logic of the natural sciences

    • physics, chemistry, biology

Creating Tractability through Geospatial Constraints

Divisions into these logical levels may make general sense but does not help to create solutions for these global challenges unless they can be made usable. Land-use related problems have the advantage that they can make use of the additional structure that geospatial dimensionality provides. This helps to make these complex problems tractable, as the specific boundaries of the “four logics” are associated with the geographic reach of the entities at the meso and micro levels. The example of climate change may help to make this argument clearer.


Greenhouse gases are both emitted and sequestered at a nano level. Soil organic matter may be reduced (carbon emissions) or increased (carbon sequestration). Trees may be cut down and burnt (carbon emissions), or planted and left growing (carbon sequestration). Reducing agriculture’s greenhouse gas emissions requires land-use changes that reduce carbon emissions and increase carbon sequestration.


Such changes in processes at the nano level result from decisions that are made by farmers and foresters at the micro level (I will simplify to farmers and agriculture for the rest of this exposition). It is the farmer who decides what will happen in the future for the specific piece of land that he or she stewards. The polygon defining the boundary of the land operated by a farmer defines the natural unit for the understanding of changes at the nano level within that farm. If a pastoral dairy farmer changes the stocking density of dairy cows, then that will have an impact across all the grassland of that dairy farm and will be disconnected from the changes in stocking densities on the farm next door.


Most farmers attempt to maximise their long-term financial performance subject to the incentives and constraints of the multiple governance systems that affect them. If they securely own their land and can pass it to their children they tend to think inter-generationally, as stewards for the land for future generations. Farmers make decisions subject to the governance arrangements made at the meso level. These include state support (such as CAP payments in Europe), taxation, environmental compliance, etc.

Each of the entities responsible for the different areas of governance has a precisely defined jurisdiction. The polygon defining the extent of this meso-level governance structure defines the unit for the understanding of changes at the micro level within each farm in that jurisdiction. If the meso-level incentives are changed (e.g. farmers are paid to increase soil carbon), then some farmers can be expected change their behaviour at a micro level, which will lead in turn to observable changes in natural systems at a nano level. Increases in soil carbon for these farmers would be observed and, ceteris paribus, reductions in net carbon emissions from agriculture.


The aggregation of all the changes in greenhouse gas emissions and sequestration at the nano level from agriculture, together with changes from other sources, gives rise to the net change in greenhouse gas concentrations in the atmosphere. This then leads at a global level to temperature increases and other phenomena of climate change.

Some of these macro-level developments will impact in turn on agricultural systems at a nano level. Increases in CO2 tends to increase the productivity of many crops. On the other hand, many of the predicted negative impacts of climate change will be on agricultural sector and rural communities.

Summary and potential implications

This paper briefly sets out a potential approach to some of our global challenges by partitioning the problems into four “logical levels” relating to land-use.

From the perspective of this author the key blockages to solutions are not at the nano or the macro levels, where in general there is firm understanding of the processes involved in the natural sciences. The challenges are instead with respect to the farm businesses and the governance institutions at the micro and meso levels:

  • what is actually happening on each specific farm e.g. to carbon emissions and sequestration?
  • what will lead the behaviour of farmers to change from the status quo?
  • what changes in the myriad of governance instruments available at the meso level will lead to widespread changes in farmer behaviour in the desired directions?

We are very interested in these and related questions at the Map of Agriculture. Our general data and analysis frameworks support the modelling of the impacts that developments at the micro and meso levels have on the nano and macro levels.

Dr. Charles Elworthy [Contact Charles using: Charles.Elworthy@MapOf.Ag]