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(179 Posts)
Esri Regular Contributor

Says @AndrewSkinner : "Sometimes it seems we are obsessed with using red and green in our maps. It’s an easy option! Red for bad, green for good … yes?  But some users have difficulty differentiating between red and green. About 8% of the world’s population (overwhelmingly, but not exclusively, male), suffer from some form of color blindness, and over 99% of them have a red-green deficiency."

Check out Andy's recent blog article covering this topic: Red... Green... What?

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Esri Regular Contributor

There's a lot you can do using Media Map, one of the configurable apps that supports swipe. Here's an example of how you can use swipe to visualize Living Atlas content, in this case using three layers from NOAA that helps us understand sea level rise and its impacts to coastal areas.

Read more...

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Esri Regular Contributor

The Community Maps Program enables community contributions of authoritative data to help build the ArcGIS Living Atlas. You can provide feedback, create detailed features, and share data layers and services, contributing to Esri basemaps that anyone can use....

 

Read more...

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Esri Regular Contributor

Keep up to date with ArcGIS Living Atlas with this post and links, and learn more about the new swipe mode in World Imagery Wayback.

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Occasional Contributor II

This was originally posted to the Esri blog page by Andy Skinner.Andy Skinner

Recently, users have asked us about basemaps that are accessible and/or color-blind-safe. In particular they have asked for maps that comply with WCAG (Web Content Accessibility Guidelines) standards, and the US Federal ‘Section 508’ equivalent. This presents a few challenges. A map can be a complex structure that relies on a well-developed hierarchy, and a basemap is an extreme example of that. Imposing a new set of rules on top can be a daunting prospect!

What follows is an attempt to get to grips with the graphic aspects and to present you with some alternatives.

What are the standards?

This is a difficult question, at least in how these standards relate to maps. The graphic requirements tend to concentrate on legibility of text (WCAG-AA standards call for a contrast ratio of at least 4.5 between text and background). It suggests that for many of our maps we could meet this requirement simply by changing labels to black, placing a halo behind them to act as the ‘background’, and leaving the rest of the content alone. A map is much more than just its labels though, and we want to improve the accessibility of the map content as well.

What is different about a basemap?

John Nelson has talked about ‘BASE-maps’ versus ‘base-MAPS’. A BASE-map is a deliberately subdued background map used as an underpinning for your information (think ‘Light/Dark Gray’ or ‘Topographic’). This is challenging if it is an accessible map, where contrast between symbols is important. A ‘base-MAP’ is a stronger reference map (think ‘National Geographic Style’), where your information is added to the overall picture. That makes accessibility easier to build-in. Either way there needs to be some room in the map hierarchy for the user’s information.

How can we approach this?

We need to find a balance between accessibility and functionality.

So, we can use a color-blind-safe palette and increase contrast between map features, to make the map work for a broader audience. This means that the map will use at least some strong colors and tones. We can avoid ‘fussy’ fonts that might be difficult to pick out of the background. And we can increase the size of labels (but carefully – we don’t want to swamp the basemap with words!). Haloes help with the legibility of labels, but they can be destructive to the rest of the map information.

Ultimately, we may have to consider cutting some of the content of the map.

The Results

I have created a map design that tries to walk a line between accessibility, and functionality as a basemap. It is more of ‘base-MAP’, but I’ve tried not to go overboard with it.

The Topographic Basemap and the new ‘Accessible’ design

Two versions of the map are available:

  • This one is a single layer basemap that sits below your information.

  • This one breaks-out the city and boundary information into a separate reference layer. This is placed over a base layer with the rest of the map content.

Here are the details:

  • Some content is removed, mainly at large scales, and some of the remaining categories have been amalgamated.
  • Scale ranges are adjusted, so that some features (for example, road shields) appear later as you zoom in. This simplifies the content at smaller scales.
  • Contrast is increased between those features remaining.
  • Specifically, a strong color is applied to water areas so that they help to define the geography of the map.
  • The palette is designed to be color-blind safe. Some colors may merge, but I have tried to restrict that to features that are otherwise distinctive, or that operate at different scales

Color blindness simulations

  • I have chosen Ubuntu as the font to use throughout the map. It has some character to it, but it is clear and legible.
  • All labels are in black or white.
  • Smaller labels are increased in size, but not to the point at which they take over the map. I use capitalization for some features (such as road/street names) to create a contrast with other labels.
  • All labels have haloes, but in most cases, I’ve tried to soften the impact of them by blurring the edges and adding a touch of transparency.

Using the basemaps

These basemap layers will be available for you to use at the URLs linked above for the foreseeable future. The map content is updated with our regular basemap data updates. I may make periodic changes to these map styles as needed based on your feedback and our experience using the maps.

If they prove popular, we’ll consider incorporating them into the core basemap set. We’ll try to give you plenty of warning if we decide to shut these URLs down and replace them.

I would appreciate any feedback you care to provide, either via the comments section below, or directly at askinner@esri.com.

Thanks!  Andy Skinner

Color-blindness suitability was assessed using ‘Color Oracle‘. Color contrast was assessed using contrast-ratio.com. Thanks to Mark Harrower and Emily Meriam for their input.

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Occasional Contributor II

This article was originally posted to the Esri blog website.

The newest feature available in Esri Vector Basemaps is a tile set of contour lines. We’re including contours in a new multisource tile layer, as part of a web map named Topographic (with Contours). This detailed content covering the globe is available as a beta release for viewing through the new ArcGIS Online Map Viewer Beta, ArcGIS Pro 2.5 and newer, and Runtime apps built on 100.5 and newer. Users on older versions of the clients will only see the topographic map layers, not the additional contour layers.

Topographic (with Contours)

Topographic (with Contours) web map

Esri Vector Basemaps provide users with a rich collection of map styles to choose from. The vector tile format allows for a nearly unlimited amount of customization of styles. Although available in ArcGIS Online for the past few years, we continue to roll out new features to enhance the experience.

These vectorized contours are published as their own hosted tile layer (World_Contours_v2). You can add them to any map, including your own custom style by using the World Contours tile layer.

In our new Topographic (with Contours) web map, the contours are not just draped on top of the map. In fact, the contours are not even added to this web map as a separate layer. The contours are included within a single topographic vector tile layer, integrated with the rest of the basemap features. The contours start displaying at LOD 11/1:~144K scale.

The new World Topographic Map (with Contours) vector tile layer has a root.json file that includes two vector tile sources. This tile layer with multiple sources is an example of a multisource tile layer. Displaying two or more vector tile sources in a single tile layer, i.e. as a multisource tile layer, is possible when using the new Map Viewer Beta.

Open in Map Viewer Beta

Open the web map in Map Viewer Beta, or open the Map Viewer Beta and add the layer or web map.

Map Viewer Beta

The JSON code in a multisource tile layer includes paths to two or more vector tile services. In our World Topographic Map (with Contours) layer style, the two sources are named esri and contours. The esri source includes all the features drawing the topographic map. This includes land color, water fill, park polygons, roads, and map labels. The contours source includes features that draw the contour lines and contour labels.

The benefit of a multisource tile layer is that the features in the map are drawn from both sources and displayed in the proper display order. This is achieved by including the JSON layers from both set’s vector tiles. Layers to draw contour lines are ordered in their proper position of the code, above the land tints and below the water lines. Layers for the contour labels are ordered with other map labels near the end of the root.json code.

SingleSourceJSON

Single source root.json style file (basemap source = esri)

MultisourceJSON

Multisource root.json style file (basemap source = esri, contours source = contours)


Compare Raster vs Vector

Topographic web map without contours (top) | Topographic (with Contours) (bottom)

We encourage users to migrate and use the Esri vector basemaps. The addition of contours brings parity between the vector topographic map and raster topo version in terms of map content. Review our plan for moving many Esri raster basemap services into mature support in the next year.


How else can users take advantage of multisource tile layers? 

Users can create a VTPK in Pro from their own data and publish it as a hosted tile layer. It can be combined with any of the Esri Vector Basemap styles, much like our contours. By editing the style JSON and adding the additional source and feature layer code, user-generated tiles can be integrated in the map display at any level of the map stack. For example, users could position the code for their content below other map labels without having to use separate base and reference layers. Using a multisource tile layer, there is only one map layer rendering all the content.

Users can create their own tiles in Pro and combine any multiple number of layers in the same coordinate system and tiling scheme.

Supported client icons

In addition to the new Map Viewer Beta in ArcGIS Online and Enterprise 10.8.1,
multisource tile layers can be viewed in ArcGIS Pro version 2.5 or newer,
apps using Runtime version 100.5 or newer, & StoryMaps.
Users on older versions of the Esri clients will only see the topographic map layers,
not the addition of the contour layer.


What’s next for the Esri Vector Basemaps?

A vectorized hillshade layer to replace the current raster service that’s included in vector maps such as Topographic or Street Map (with Relief). The multisource Topographic (with Contours) tile layer will include three vector sources: esri, contours, and hillshade, providing a full vector map solution.

Multisource tile layers are a new addition to the display and use of vector basemaps in ArcGIS Online. The ability to combine these multiple layers into one single vector tile layer allows a better representation of basemaps, especially in the case of our Topographic map with Contours, with the addition of our vectorized contour layer.

Bookmark this Esri blog link to keep current on vector basemap releases.

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Esri Regular Contributor

NAIP imagery has long been available in ArcGIS Living Atlas as a dynamic image service, enabling image analysis on the 4-band source imagery dating back to 2010. However, for those who wish to leverage the imagery for visualization, the latest NAIP imagery has been optimized for display quality and performance in the form of a new tile layer.

On top of that, the NAIP imagery has been enhanced to provide the best results. See the before and after below:

In addition, the metadata display has been improved, meaning you have instant access to the source, acquisition date, accuracy, resolution and more. All available with a single click. 

For more info see this blog article by @RobertWaterman : Fast and Simple NAIP Imagery 

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Esri Regular Contributor

ArcGIS Living Atlas of the World provides foundation elevation layers and tools to support analysis and visualization across the ArcGIS platform. These layers get updated quarterly with high resolution elevation data from open sources and community maps program. In a recent release, world elevation layers are updated with bathymetry and a few high-resolution elevation datasets.

 

This blog article from Rajinder Nagi‌ provides the details: High resolution data updates to Living Atlas World Elevation Layers (July 2020) 

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Occasional Contributor II

Note:  This blog was originally published on the Esri Blog site.

The Esri vector basemaps were updated this week with new content from our commercial data provider and community contributions. The content below details how you can influence map content and styling. Additionally, we’re sharing details on new and expanded map features. Check in on the Vector Basemaps blogs for related information.


Community Map Editor

Data Contributions and Community Map Editor

The Community Maps Program for Basemaps uses the best available data sources to produce a wide variety of multi-scale, online basemaps. These maps serve as a foundation for almost any GIS task. Provide your organization’s authoritative data to enhance the map. If you don’t have a collection of data layers to provide, but still want to contribute, consider adding content through the Community Maps Editor app. Edit parts of the Esri Community Maps basemap to add detailed features for universities, schools, parks, landmarks, and other special areas of interest.


Vector Style Editor

Style Editor

A key benefit using Esri Vector Basemaps is custom cartographic styling. Through the Vector Tile Style Editor, put a unique touch on your map’s look. The Quick Editor feature single click color changes across the map. Don’t like the results? Click again. Fine tune the map style through layer control changes. Turn features off. Change colors. Replace typefaces. Adjust line widths. These are the tip of what can be done to make your mark on your design. The editor is accessible through this app or from the “change style” icon in the map viewer. See supporting documentation.


Vector Basemap Localization

Localization

Esri Vector Basemaps are now available in 24 localized languages. Another expansion in the Localization efforts is the map styles available. Our creative vector styles (Charted Territory, Modern Antique, Nova, etc.) are now included in the language/regional basemap galleries. Refer to this FAQ answer for the list of available languages of the Esri vector basemaps.


Places | Points of Interest

Places

As reported earlier this year, our collection of Beta layers include extended points of interest. We initially included millions of places in the United States using SafeGraph Places as the data source. In this week’s release, we expanded our global reach outside the U.S. Millions more restaurants, stores, businesses, and other POIs are in the map from HERE Places Extract data.We’ll continue to improve the Beta items before a production release.


Esri User Conference 2020

Esri User Conference

This year’s Esri User Conference is a virtual event on July 13 – 16, 2020. Many sessions related to the ArcGIS Living Atlas are available this year. Basemaps, the Style Editor, and Community Maps are a few of the topics covered. The U.C. event also provides an opportunity to connect with Esri cartographers and other staff. Navigate to the Basemap & Community Maps page. We’re part of the Living Atlas and Location & Data Services area. Register today and check us out.


Esri Vector Feedback

Feedback

Need to make a correction to one of our maps? Our Feedback Services are built for this purpose. Mark up the map and enter the details. We’ll review and publish the edit to the basemaps.


GeoNet Community

GeoNet | The Esri Community

Visit the ArcGIS Living Atlas of the World product page on GeoNet. Ask questions, share custom styles, and browse for the information you need!

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