CartoVista Publisher
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      3. CartoVista Publisher

      Layer properties - General

      The General tab displays basic information about the layer and allows you to set the visibility, as well as the opacity, the blend mode, etc.

           This is the General tab: 

      general-tab

           The General tab displays basic information about the layer and allows you to set the visibility, as well as the opacity, the blend mode, the quality and the output format of the layer. This tab is divided into the following sections:

           - Main options,

           - Visibility,

           - Clustering,

           - Layer

      Main options

      main_options

           Name: Set the layer's name. Each layer name must be unique within the map window.

           File Path: Depending on the layer format, this field displays the:

      • path of a local GIS file
      • database connection of a spatial database
      • local disk cache of a tile provider
      • portal name of a server layer

           Metadata (Sources): Provides the source of the GIS file. This information can be displayed in the map notice and the metadata panel of the published map, depending on the options selected in the Map Interface tab of the Viewer Configuration dialogue. If you want more information about the metadata, click here.

           Description: Provides a description for this map layer.

      Visibility

      visibility

           Visible: Determines if the layer will be visible in the map window (provided the current view is within the layer's Visibility Ranges). In the layer control, the visibility icon will be toggled on or off automatically, once you apply the changes.

      Visibility On Visibility Off
      on off

            Note that the layer's visibility in the published map depends on the configuration of each theme set in the Themes Configuration window. 

      • Show in Legend: Determines if the layer is shown in the legend panel of the published map.
      • Show in Layer Control: Determines if the layer is shown in the layer control of the published map. This allows users to turn it on or off as needed.
      • Show Layer Style in Layer Control: Determines if the style classes of the layer will be shown in the layer control of the published map. This allows users to turn each style class on or off as needed.
      • Show in Date Range Picker: when working with time-based data, this determines if the user can select a specific time range for this data.

      Clustering

      clustering

           Map features of a point layer can be displayed as data clusters to facilitate the interpretation of very dense layers. Points that are located near each other are replaced by a single circle. The number shown on each circle corresponds to the number of points clustered. The size of each cluster is adjusted dynamically to bring out the most important clusters. To learn more about the clusters, click here.

           Example of a layer without data clusters: 

      no-cluster

           Example of a layer with data clusters: 

      clusters

            Enable Clustering: Enables the clustering option in the layer control of the published map. This allows users to toggle it on or off.

           On by Default: Toggles the clustering on or off by default for this layer. 

           Force Clustering Above a Specific Scale: Forces the clustering automatically above a specific scale. 

      Layer

      layer tab

           Opacity: Sets the layer opacity from transparent (0%) to fully opaque (100%). 

           Blend Mode: Applies a blend mode to enhance the rendering of a vector layer on top of another layer, in order to see through the layer.

      • If you are using a light colour base map, we recommend using the Multiply blend mode. This will provide transparency without altering the opacity of a layer.
      • When using a dark colour base map, we recommend the Overlay blend mode.
      Blend Mode Description Example
      Normal The layer's features appear on top of the background. normal_dark
      Multiply Multiplies the values of the layer's colour by the background color, and then normalizes by dividing by 0xFF, resulting in darker colours. multiply_dark
      Screen Multiplies the complement (inverse) of the layer's colour by the complement of the background colour, resulting in a bleaching effect.  screen_dark
      Lighten Selects the lighter of the constituent colours of the layer and the colour of the background (the colours with the larger values).  lighten_dark
      Overlay Adjusts the colour of each pixel based on the darkness of the background. If the background is lighter than 50% gray, the layer and background colours are screened, which results in a lighter colour. If the background is darker than 50% gray, the colours are multiplied, which results in a darker colour.  overlay_dark
      Hard Light Adjusts the colour of each pixel based on the darkness of the layer. If the layer is lighter than 50% gray, the layer and background colours are screened, which results in a lighter colour. If the layer is darker than 50% gray, the colours are multiplied, which results in a darker colour. hard_light_dark