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Using Color in Maps

Using Color in Maps
Related:  CARTOGRAPHYGIS ProjectSoftware and Tools

Projections and Distortion in the News A colleague today brought in a newspaper clipping from the weekend edition of the Wall Street Journal for 13-14 April, 2013. It was a map depicting the extimated range of North Korea’s Musudan missile. A couple of things were immediately interesting about this. First, the buffered area did not appear to actually be circular. Working with GIS, I am well aware projections will make us all SADD. The odd position of Alaska could be accounted for if the analyst used a local projection, one centered on Korea. When my colleague brought this to my attention a few minutes ago, he simply asked, “Does this seem right to you?” The slight elongation of the shape toward the north indicates a local projection was used. Next, we grabbed a country feature class from ArcGIS Online so we could not just buffer a point, but the whole country of North Korea. Before running the buffer tool, we also first made sure the country feature class had a geographic coordinate system.

How The Rainbow Color Map Misleads | eagereyes Colors are perhaps the visual property that people most often misuse in visualization without being aware of it. Variations of the rainbow colormap are very popular, and at the same time the most problematic and misleading. The rainbow color map is based on the colors in the light spectrum, and is sometimes done correctly, sometimes the colors are in the wrong order. Quick, name the colors in the rainbow in order! See, that’s part of the problem. Now take a look at this map from a paper on water resources published in the Journal of the American Water Resources Association, which I found on Cliff Mass’s fantastic weather blog. Do you see the how the country is divided down the middle? But let’s take a closer look at the legend. As it turns out, the values change smoothly, but the colors do not. Luminance The combination of smoothly varying and abruptly changing luminance makes it appear as if there were clearly defined regions on the map. Hue What is more, the hue changes. Why Rainbows?

Map design: a list of helpful online resources Whether they’ve been making maps for 20 years or two weeks, just like any designer, cartographers need inspiration when starting their latest project. Inspiration can come from many places and take many forms. Here at Ordnance Survey we use a range of resources and we want to share some of them with you. In this post we list several online resources that can help with your latest map design; from choosing the right colour palette to selecting great fonts. Although by no means a definitive list, these are some of the tools and resources that we refer to and use regularly and we have sorted them into four categories: colours, fonts, symbols and map inspiration: Colours The use of colour is very often fundamental to the success of a map. ColorBrewer 2.0 is a great tool for selecting colour schemes that are specific to maps, especially helpful when mapping various classes of data. Raphaeljs.com/picker is a nice, easy-to-use colour picker that returns a hex code. Fonts 1001 Free Fonts Dafont.com

The National Map Map coloring Map coloring is the act of assigning different colors to different features on a map. There are two very different uses of this term. The first is in cartography, choosing the colors to be used when producing a map. Cartography[edit] Topographic map of Easter Island, using colors to show elevations. Color is a very useful attribute to depict different features on a map.[1] Typical uses of color include displaying different political divisions, different elevations, or different kinds of roads. Displaying the data in different hues can greatly affect the understanding or feel of the map.[2] Also, the cartographer must take into account that many people have impaired color vision, and use colors that are easily distinguishable by these readers.[3] Mathematics[edit] In mathematics there is a very strong link between map coloring and graph coloring, since every map showing different areas has a corresponding graph. References[edit]

Aplicaciones Web de mapas: ¿qué herramientas necesito aprender? La siguiente entrada es parte de una serie de entradas en las que damos respuesta a las preguntas relacionadas con la consultoría GIS que nos habéis ido enviando en los últimos meses. Las preguntas enviadas fueron: “¿Qué herramientas necesito aprender para crear una aplicación web de mapas en una intranet?” “¿Cómo interactúan las distintas aplicaciones Web de mapas con las aplicaciones Web Móviles?” A – ¿Qué herramientas necesito aprender para crear una aplicación web de mapas en una intranet? Para crear una aplicación Web de mapas para una intranet habrás de conocer las mismas herramientas que para crearla para internet. Bien, lo primero, a mi modo de ver, es que ver en qué supuesto encaja tu desarrollo. A – Publicar vía web nuestra información cartográfica sin desplegar ningún tipo de infraestructura tecnológica. B – Crear una aplicación web para publicar, procesar o descargar vía web información cartográfica de terceros. Consúltanos OpenSource-Openlayeres-Esri-HTML5-Flex-etc

Diseño cartográfico | Ecoter SC - Ecología y Territorio Como dice Wikipedia, la cartografía es la ciencia encargada del estudio y elaboración de mapas. Los mapas, por su parte, son una representación generalizada y precisa de fenómenos localizables en el espacio. Desde nuestro punto de vista, la elaboración de mapas es una ciencia que incluye a partes iguales, técnica, análisis y diseño. Los mapas son documentos importantes y de gran relevancia para la toma de decisiones territoriales y un instrumento de gestión necesario en la sociedad actual, independientemente de su formato. Por ello, a la hora de elaborar un mapa hemos de tener muy claros los objetivos de su realización, el propósito de su representación y a quién va dirigido. El conocimiento de los SIG, el buen gusto y el correcto uso de las variables cartográficas nos permitirá conseguir que nuestro mapa sea un documento válido. Dejemos de ser sólo analistas SIG y convirtámonos también en Cartógrafos. Color Use gudelines: Esquemas de color, tipos y combinaciones en nuestra leyenda.

Cartastrophe | Where Bad Maps Come From Our Favorite Maps of 2013 The digital maps we loved in 2013 didn't simply illustrate novel or useful information (how people travel, where they live, what it means to live without much money). They did it in ways we'd never seen before, manipulating time, dimensions, perspective, even the atmosphere. These maps weren't just interesting in content; they were innovative in design. That's our new bar for 2014. So this December, instead of sharing our top 10 maps of the year, we're looking at 10 ways we've learned to think about maps in entirely new ways. 1. Mapbox 2. Google Maps 3. Global Bike Share Map 4. Dots on a bus 5. Google Timelapse project 6. The Boston Harbor Association 7. Scott Page 8. 9. Nickolay Lamm 10. Racial Dot Map

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