Latest Contributions by ChrisWhitmore

You may have noticed Map Viewer Beta was updated last week to include a couple new features. The November update includes the ability to add CSV files from a url as well as automatic preview when configuring pop-ups. Here's a quick rundown of the enhancements. Add CSV from url With the latest update to Map Viewer Beta, you can add CSV files from a url. Quickly add data in CSV format to your map using a url. Because the CSV is provided from a url, any updates to the CSV will also be displayed on the map. note: only CSVs with coordinate location fields are supported currently. Support for CSVs with address fields is coming.  Automatically preview pop-up changes Did you know that you can see pop-up changes dynamically as you make changes in the configuration pane? It's a really helpful feature when building multiple elements or when making changes to maps already in use.  With the latest update, the pop-up for a random feature is automatically opened when the configure pop-up pane is opened. Preview your pop-up configuration while you're making the updates. Want to see what a specific feature when making updates? Open the pop-up for the desired feature before opening the configuration pane. Misc Another update is coming in a few weeks (charts!). Updated Map Viewer Beta road map for 2021 is in the works; more details coming soon. ... View more

Web maps authored in Map Viewer Beta are supported in Map Viewer (classic). However, some features and enhancements introduced with Map Viewer Beta are not supported in Map Viewer (classic). If Map Viewer (classic) detects any unsupported configurations, the message below is displayed. In some instances, you may see specific layers mentioned. See specific features listed below for a breakdown of functionality in Map Viewer Beta that is not supported in Map Viewer (classic). Group layers When a web map with group layers is opened in Map Viewer (classic), the layers within any group layers are added as individual separate layers. If the map is saved in Map Viewer (classic), the layers are saved as individual layers without any grouping applied. Pop-Ups Map Viewer Beta provides a rich new authoring experience where multiple pop-up content elements, like attributes, rich text, images and attachments can be included in a single pop-up. These pop-ups can contain a lot of rich information. As pop-ups in Map Viewer (classic) only supported a single content element, only the first element will be read when opening maps in Map Viewer (classic). If you have a pop-up with more than one content element configured in a Map Viewer Beta map, we recommend   saving the map   as a copy if it needs to be saved in Map Viewer (classic).  Visualizations Dot density Map Viewer Beta allows you to create maps using the   dot density  symbology style.  As this capability requires the Map Viewer Beta to be displayed, the layer displays as a single color when opened in Map Viewer (classic). This won’t cause any critical issues but could leave you confused as to why your map isn’t displaying as you had hoped. If you change the symbology and save the map in Map Viewer (classic) your dot density symbols will be changed.  Blending Blending is not displayed in Map Viewer (classic). If a web map containing layer blending is saved in Map Viewer (classic), the layer blending is not preserved. Cluster labels Cluster labels are not displayed in Map Viewer (classic). If a web map containing cluster labels is saved in Map Viewer (classic), the labels are preserved unless the rendering style for that layer was updated. Label filters Filters applied to label classes are not supported in Map Viewer (classic). All label classes will be displayed without filters applied. If a web map containing label filters is saved in Map Viewer (classic), the labeling filters are preserved unless the labeling configuration that layer was updated. New beta symbols Map Viewer Beta introduced new symbols with the July 2020 update. Currently in beta, these symbols use an updated implementation that is not supported in Map Viewer (classic). When opened in Map Viewer (classic), the symbols are not displayed. If a map with new symbols is saved in Map Viewer (classic), the symbols are preserved unless the style of the layer was updated. For more information, see Do more with Symbols in Map Viewer Beta.  Map properties Rotation Rotation is not supported in Map Viewer (classic). When a web map with rotation is opened in Map Viewer (classic), rotation is ignored. If the map is saved in Map Viewer (classic), rotation is not saved with the map.  Preserve map scale Map Viewer (classic) honors the preserve map scale property. However, this setting is not preserved if the map is saved in Map Viewer (classic). Background Background is supported in Map Viewer (classic). Background is preserved when saved. Layer ordering Layers can be in any order in Map Viewer Beta. This means map image layers can be on arranged above feature layers. In Map Viewer (classic), there are rules about the required order for layers. If a map created in Map Viewer Beta is opened in the Map Viewer (classic), the layers will be re-ordered to follow the ordering rules in Map Viewer (classic). If you want to maintain the order that you created in Map Viewer Beta, use the   Save As   functionality when saving the map in Map Viewer (classic). ... View more

The blend mode descriptions below are provided by the ArcGIS API for JavaScript API reference documentation. For more information on how layers are blended, see the ArcGIS API for JavaScript API reference documentation.  See these blog posts for getting started with blending: Blend Modes are here and they’re pretty awesome  Blend Modes for Thematic Maps  Lighten Lighten blend modes tend to create a lighter result than the colors of the original layer.  You can use these blend modes to create variations of this effect. In the Lighten blend modes, black is the neutral point   and anything brighter than black will affect the layer below. Blend mode Description Lighter Colors in top and background layers are multiplied by their alphas (layer opacity and layer's data opacity. Then the resulting colors are added together. All overlapping mid range colors are lightened in the top layer. The opacity of layer and layer's data will affect the blend result. Lighten Compares top and background layers and retains the lighter color in the top layer. Colors in the top layer become transparent if they are darker than the overlapping colors in the background layer allowing the background layer to show through completely. Can be thought of as the opposite of darken blend mode. Screen Inverts colors of the background layer and multiplies with colors of the top layer. The resulting colors will be lighter than the original color with less contrast. Screen can produce many different levels of brightening depending on the luminosity values of the top layer. Can be thought of as the opposite of the multiply mode. Color dodge Creates a brighter effect by decreasing the contrast between the top and background layers, resulting in saturated mid-tones and bright highlights. Plus Creates a brighter effect by decreasing the contrast between the top and background layers, resulting in saturated mid-tones and bright highlights. Darken Darken blend modes create darker results than all layers. In darken blend modes, pure white in the top layer will become transparent allowing the background layer to show through. Black in the top layer will stay unchanged. Any color that is darker than pure white is going to darken a top layer to varying degrees all the way to pure black. Blend mode Description Darken Emphasizes the darkest parts of overlapping layers. Colors in the top layer become transparent if they are lighter than the overlapping colors in the background layer, allowing the background layer to show through completely. Color burn Intensifies the dark areas in all layers. It increases the contrast between top and background layers, by tinting colors in overlapping area towards the top color. To do this it inverts colors of the background layer, divides the result by colors of the top layer, then inverts the results. Multiply Emphasizes the darkest parts of overlapping layers by multiplying colors of the top layer and the background layer. Mid range colors from top and background layers are mixed together more evenly. Contrast Contrast blend modes can be used to increase the contrast and saturation to have more vibrant colors and give a punch to your layers.  The following blend modes create contrast by both lightening the lighter areas and darkening the darker areas in the top layer by using lightening or darkening blend modes to create the blend. Blend mode Description overlay Uses a combination of multiply   and screen modes darken and lighten colors in the top layer with the background layer always shining through. The result is darker color values in the background layer intensify the top layer, while lighter colors in the background layer wash out overlapping areas in the top layer. Hard light Multiplies or screens the colors, depending on colors of the top layer. The effect is similar to shining a harsh spotlight on the top layer. Soft light Applies a half strength screen mode to lighter areas and and half strength multiply mode to darken areas of the top layer. You can think of the soft light as a softer version of the overlay mode. Vivid light Uses a combination of color burn or color dodge by increasing or decreasing the contrast, depending on colors in the top layer. Component The following blend modes use primary color components, which are hue, saturation and luminosity to blend top and background layers. Blend mode Description Color Creates an effect with the hue and saturation of the top layer and the luminosity of the background layer. Can be thought of as the opposite of luminosity blend mode. Saturation Creates an effect with the saturation of the top layer and the hue and luminosity of the background layer. 50% gray with no saturation in the background layer will not produce any change. Luminosity Creates effect with the luminosity of the top layer and the hue and saturation of the background layer. Can be thought of as the opposite of   color   blend mode. Hue Creates an effect with the hue of the top layer and the luminosity and saturation of the background layer. Composite The following blend modes can be used to mask the contents of top, background or both layers. Destination   modes are used to mask the data of the top layer with the data of the background layer. Source   modes are used to mask the data of the background layer with the data of the top layer. Blend mode Description Destination over Destination/background layer covers the top layer. The top layer is drawn underneath the destination layer. You'll see the top layer peek through wherever the background layer is transparent or has no data. Destination atop Destination/background layer is drawn only where it overlaps the top layer. The top layer is drawn underneath the background layer. You'll see the top layer peek through wherever the background layer is transparent or has no data. Destination in Destination/background layer is drawn only where it overlaps with the top layer. Everything else is made transparent. Destination out Destination/background layer is drawn where it doesn't overlap the top layer. Everything else is made transparent. Source atop Source/top layer is drawn only where it overlaps the background layer. You will see the background layer peek through where the source layer is transparent or has no data. Source in Source/top layer is drawn only where it overlaps with the background layer. Everything else is made transparent. Source out Source/top layer is drawn where it doesn't overlap the background layer. Everything else is made transparent. Xor Top and background layers are made transparent where they overlap. Both layers are drawn normal everywhere else. Invert The following blend modes either invert or cancel out colors depending on colors of the background layer. These blend modes look for variations between top and background layers.   Blend mode Description Invert Inverts the background colors wherever the top and background layers overlap. The invert blend mode inverts the layer similar to a photographic negative. Reflect This blend mode creates effects as if you added shiny objects or areas of light in the layer. Black pixels in the background layer are ignored as if they were transparent. Average Takes the mathematical average of top and background layers. Result of average blend mode is often similar to the effect of setting the layer's opacity to 50%. Difference Subtracts the darker of the overlapping colors from the lighter color. When two pixels with the same value are subtracted, the result is black. Blending with black produces no change. Blending with white inverts the colors. This blending mode is useful for aligning layers with similar content. Exclusion Similar to the difference blend mode, except that the resulting image is lighter overall. Overlapping areas with lighter color values are lightened, while darker overlapping color values become transparent. Minus Subtracts colors of the top layer from colors of the background layer making the blend result darker. In the case of negative values, black is displayed. ... View more