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ICA in Mapping the World

ICA takes its international responsibilities seriously, notably in Africa. A previously published ICA page (by Nyapola in GIM International, January 2005) described the scope of the ICA Working Group on...

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Global Spatial Data Model

Traditional horizontal and vertical datum have two separate origins: respectively Earth’s centre of mass as origin for horizontal, and mean sea level (the geoid) as origin for vertical. The author...

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Visibility

There are professions in our society that are almost invisible. Mine certainly isn’t one of them. Publishers know how to make use of the media to show the world what...

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Cartography and GIS Conference

The first international conference on Cartography and GIS took place at the ski-resort of Borovets in Bulgaria from 25th to 28th January 2006. The main goal was to introduce modern...

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The Challenge of Change

SBG, a Sweden-based privately owned company, designs and manufactures software and hardware for survey, design, and machine-control applications. Since its inception in 1970 the company has provided surveying tools for...

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Mapping Society and Social Mapping

The theoretical basis of cartography is of fundamental importance. There are many conceptual issues involved in representing space, many of which are of interest to the ICA Commission on Theoretical...

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Official Geoid Undulations Model

The classical geodesist’ dream of a dense, accurate, reliable and homogeneous countrywide levelling control network is a luxury even for the richest countries and will probably remain a dream. Prior...

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