Frequently Asked Question

Symptom

• When printing a Webi report in PDF/XLS format, some N4V components are not correctly printed (a puzzle may appear) or there is a very long delay to print the report.
• When using Google Address component (geolocation), the component is not displayed correctly.

Environment

• Windows & Linux Server
• Need4Viz : all versions. Fixed in 2022.0.1 version.

Resolution

Depending on the action and the N4V components, the N4V server may need to access internet.

When printing a Webi report containing the following N4V components :

• Simple Sankey
• Google Maps Lat/Lon
• Google Maps Geocoding
• Google Heatmap
• OpenStreetMap Chart Pie

When displaying a Webi report containing the following N4V component :

• Google Maps Geocoding

The URL accessed from the N4V server are the following :

• https://www.google.com/jsapi
• https://*.googleapis.com
• https://*.gstatic.com
• https://*.openstreetmap.org

A. If no external web access is allowed from the N4V server

Set to true the NoExternalWebAccessAllowed variable in the ~Need4Viz\nodejs\node_modules\custom_element\ce_libs\config.js file, so a blank frame with unprintable message will be generated instead of the expected render.

B. If external web access is allowed through a proxy from the N4V server

Set in the ~Need4Viz\nodejs\node_modules\custom_element\ce_libs\config.js file the ProxyHost variable (only proxy without authentication can be used).

C. If external web access is allowed directly from the N4V server

You have nothing to do.

Notice :

After each update of the config.js file, follow these steps to make the changes effective :

1. Open a PowerShell command window as local administror of the server
2. Change directory to ~Need4Viz_folder_installation/Scripts/
3. Run the Start_Need4Viz.ps1 command