What are some of the latest developments and trends in map projection technology and methods?

1 Dynamic projections

One of the most innovative trends in map projection technology is the use of dynamic projections, which can adjust to the location, scale, and orientation of the map view. Dynamic projections can provide more accurate and realistic representations of the earth, as they minimize the distortions that occur when using a fixed projection. For example, the adaptive composite map projection (ACMP) can change its shape and parameters according to the map extent and center, and blend different projections to create a smooth transition. Dynamic projections can also be used to create interactive maps that respond to user inputs, such as zooming, panning, and rotating.

2 Web mapping services

Another trend that is transforming the field of map projection is the proliferation of web mapping services, such as Google Maps, OpenStreetMap, and ArcGIS Online. Web mapping services allow surveyors to access, share, and visualize spatial data from various sources and platforms, and to create customized maps for different applications. However, web mapping services also pose some challenges for map projection, as they often use a standard projection that may not be suitable for all regions and scales. For example, most web mapping services use the Web Mercator projection, which is convenient for navigation and display, but severely distorts the area and shape of high-latitude regions. Therefore, surveyors need to be aware of the limitations and biases of web mapping services, and use alternative projections when necessary.

3 Projection analysis tools

Another development that is enhancing the practice of map projection is the availability of projection analysis tools, which can help surveyors evaluate and compare the performance and suitability of different projections. Projection analysis tools can measure and visualize the distortions and errors that affect various aspects of the map, such as scale, area, distance, direction, and shape. For example, the Tissot indicatrix is a graphical method that uses circles to show how a projection affects the angles and sizes of small areas on the map. Projection analysis tools can also provide recommendations and suggestions for choosing the best projection for a given purpose and region.

4 Projection education and awareness

Another trend that is influencing the field of map projection is the increasing demand for projection education and awareness, both among surveyors and the general public. Projection education and awareness can help surveyors improve their skills and knowledge of map projection, and avoid common pitfalls and misconceptions. For example, surveyors can benefit from learning about the history, principles, and types of map projections, and how they relate to the coordinate systems and datum they use. Projection education and awareness can also help the general public understand the importance and complexity of map projection, and appreciate the diversity and beauty of the world's geography.

5 Projection design and creativity

Another trend that is inspiring the field of map projection is the emergence of projection design and creativity, which can offer new perspectives and possibilities for representing the earth on a map. Projection design and creativity can involve modifying, combining, or inventing new projections that can challenge or enhance the conventional ways of mapping the world. For example, some projection designers have created artistic or unconventional projections that can highlight or contrast certain features or themes of the earth, such as climate, culture, or politics. Projection design and creativity can also involve using different media or formats to create maps, such as 3D models, sculptures, or animations.

6 Projection standards and regulations

Another trend that is affecting the field of map projection is the development of projection standards and regulations, which can ensure consistency and quality in the production and use of maps. Projection standards and regulations can provide guidelines and specifications for selecting, applying, and documenting map projections, and for communicating and exchanging spatial data among different users and systems. For example, the International Organization for Standardization (ISO) has issued several standards for map projection, such as ISO 19111 for spatial referencing by coordinates, and ISO 19128 for web map server interface. Projection standards and regulations can also help surveyors comply with the legal and ethical requirements of their profession and society.

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?