G3W-CLIENT: the cartographic client

Aspetti generici

L”applicazione ha un”interfaccia responsiva costituita da sessioni espandibili e riducibili. La barra di testa contiene i seguenti elementi:

Il colore dell”interfaccia dipende dalla tipologia di utente loggato.

The header contains the following elements:

• Logo, titolo e sottotitolo, derivanti da:

  • titolo principale (impostato a livello di Dati Generali) o nome MacroGruppo, in base alle impostazioni

  • nome Gruppo Cartografico

  • titolo servizio WebGis

• Cambia mappa: che permette di passare da un servizio WebGis, posto all”interno del solito Gruppo Tematico, ad un altro mantenendo estensione e scala di visualizzazione

• Identificativo dell”utente: nel caso sia stato effettuato l”accesso al sistema

• Credits

• Home: per accedere al FrontEnd

• Lingua: la scelta della lingua si riflette nei singoli menu del clienta e sui contenuti del portale di accesso. Le linguedisponibili sono quelli attivati dall”amministrazione.

Il Pannello Strumenti é posto a sinistra e contiene i seguenti oggetti:

• Metadata: any content defined in the GetCapabilities of the QGIS Project

• Stampa: strumento di stampa basato sui layout definiti su progetto QGIS

• Search: with the search tools defined in the Administration session, as well as a free Query Builder like the one present in QGIS

• Charts: visualization of any graphs created on QGIS with the DataPlotly plugin

• Spatial Bookmarks: tool for using the Spatial Bookmarks associated with the QGIS project and allowing the user to create new ones for his exclusive use.

• Tools: session that collects the various tools that may be activated on the WebGis service (including editing tools)

• WMS: session to add custom WMS services to the map

• Mappa: contenente:

  • Strati: elenco strutturato degli strati, definito su progetto QGIS

  • Basi: scelta della mappa di base tra quelle definite a livello di creazione Gruppo Tematico

  • Legenda: legenda grafica dei vari strati

In the event that Themes (Views) are defined in the QGIS project, a specific choice menu will be available in the Layers session of the TOC.

The choice of a Theme will determine the automatic activation of the layers and related styles, defined in the Theme itself.

Navigazione e interazione con la mappa

Area di mappa

Il footer dell”area di mappa mostra:

• la scala di visualizzazione (modificabile)

• mouse coordinates: coordinates can be shown in project projection system and in WGS84 LatLong (ESPG: 4326)

• il sistema di proiezione del progetto

• un”icona per copiare l”URL del servizio con riferiemnto all”estensione visualizzata al momento

Controlli di mappa

Di seguito si riportano le icone e la descrizione delle funzionalità dei diversi MapControls attivati a livello di Gruppo Cartografico.

• zoomtoextent: zoom all”estensione iniziale

• zoom: zoom in e zoom out

• zoombox: strumento di zoom basato su disegno di un rettangolo

• Zoom last/next: undo/redo tools to navigate previous and post visualization areas (icons in the down-left corner)

• query: interrogazione puntuale strati geografici

• querybbox: interrogazione tramite box degli strati - N.B. gli strati interrogabili devono essere pubblicati come servizi WFS sul progetto QGIS

• querybypolygon: sarà possibile interrogare automatica le features di uno o più strati che cadono all”interno di un elemento poligonale di uno strato guida. (Es. cosa c”è dentro una particella catastale?). - N.B. gli strati interrogabili devono essere pubblicati come servizi WFS sul progetto QGIS

• querybydraw:: query based on an irregularly shaped polygon drawn by the user - N.B. for the layers to be queried according to this method it is necessary that they are published as WFS services on the QGIS project

• geolocation: strumento di geolocalizzazione (utile per consultazione da tablet)

• nominatin: strumenti ricerca indirizzi e toponimi basato su OSM

• streetview: StreetView di Google sulla tua mappa

  • in the presence of GoogleMaps API Key, StreetView it is integrated on the client and synchronized with the position and direction of the icon on the map

  • in the absence of GoogleMaps API Key, StreetView it will open on a new browse tab without the aspects of synchronization with the map

• lunghezza: strumento di misura di tratti lineari

• area: strumento di misura di superfici

• addlayers: tool for temporarily uploading GML, GeoJson, KML, GPX, SHP (zipped) and CSV with coordinate to WebGis. These layers will remain until the end of the work session

• snapshot: strumento per realizzare snapshot dell’area di mappa

• GeoSnapshot: tool to export a GeoTIFF of the map area

Query type

Si precisa che la funzione di interrogazione agisce, di default, con il metodo del carotaggio fornendo informazioni relativamente a tutti i layer che sottostanno al punto in cui si clicca con il mouse o si disegna un riquadro.

Per interrogare un singolo layer occorre che questo sia precedentemente selezionato a livello di TOC.

Remember that query modes based on querybbox, querybypolygon and querybydraw require the publication of all the layers involved as WFS services at the QGIS project level.

The result of these three types of queries can be based on the geometric operations intersection and containment.

The choice made via the drop-down menu allows you to move from one result to another dynamically.

The querybypoligon tupe works also on the polygon layers added using the AddLayer tool

NB: it will be possible to zoom on the feature associated with the individual results only if the option Add geometry to object response has been activated at the QGIS project level (Project → Properties, QGIS Server session).

Map query

A livello di progetto QGIS (Proprietà del vettore → Attributes Form), per ogni layer, è possibile definire degli specifici form per la visualizzazione strutturata dei risultati di un interrogazione (schede, gruppi…)

Upon querying a geometry, the form structure will be replicated at the client level.

Eventuali collegamenti a foto determineranno la visualizzazione di un anteprima cliccabile, eventuali collegamenti a link o ad altri contenuti multimediali determineranno la visualizzazione del tasto Apri che permetterà al consultazione del collegamento.

Per approfondimenti su questo punto vedi il paragrafo Visualizzazione di contenuti multimediali.

Single result

In case the query provides one single result, the attributes will be displayed according to the form defined in the QGIS project or as a column list

The bar above the query results shows the following icons:

• Zoom to feature: if the function is activated on the Properties of the QGIS project

• Show relations (1: N): if present on the QGIS project

• Show relation charts: display of plots related to 1: N related data. Only if 1: N relationships are associated with the interrogated layer and plots have been activated on the referencing tables.

• Print Atlas: prints the reports (atlas) (if set on QGIS project) related to the queried feature

• Download single results (Shapefile, GPK, GPX, CSV, XLS): if activated in the administration session

• Remove feature from result: remove the feature to the current list of results (useful to choose manually the list of objects to select/download)

• Add/Remove selection: add/remove the features to the current selection

• Copy map URL pointing to the geometry : to create a parameterized URL that points to this features

• Editing: to start editing directly on this feature

Multiple result

In case the query provides more results these will be listed as a list with the possibility to expand the detailed information.

A series of icons, relating to the list of resulting features, will allow you to:

• Zoom to features result extent: if the function is activated on the Properties of the QGIS project

• Print Atlas: prints the reports (atlas) (if set on QGIS project) related to all the features result

• Download all the features results (Shapefile, GPK, GPX, CSV, XLS): if activated in the administration session

• Add feature on result: add features (clicking on the map) to the current list of results (useful to choose manually the list of objects to select/download)

• Add/Remove selection: add/remove the list of features result to the current selection

Visualizzazione di dati relazionati in modalità 1:N

In the event that, at the QGIS project level, one or more type 1:n relations have been associated with a layer, the icon View Relationships will be shown in the attribute form.

By clicking on the icon you will access the list of 1:N relations present and, from these, the list of child records associated with the individual relationships.

In the case of a simple 1:1 or N:1 joins, the joined records will be displayed directly in the main form.

In the new frame, a filter, applied generically to the contents of all fields, will allow you to filter the list of child records.

The icon to the left of each record allows you to switch from the classic table view to the one based on any form defined on the QGIS project

In caso di presenza di link a contenuti multimediali, saranno visualizzabili le anteprime delle immagini e/o il tasto Apri per la consultazione di diversa tipologia di contenuto.

In case of active plots on the related table, these will be displayed through Show charts at the top right.

Parameterized URLs

It is possible to create parameterized URLs for direct zomming to: geographical extension single feature by FID single/list features by value of a field

Here the URL paramters available:

• map_extent (Zoom to map extent)

  • Ex: <url_project>?map_extent=Xmin, Ymin,Xmax,Ymax

• zoom_to_fid (Zoom to a specific feature by FID)

  • Ex: <url_project>?zoom_to_fid=<layer_id>|<fid value>

• ztf (Zoom to features defined on the basis of attribute values)

  • Ex: <url_project>?ztf=<layer_id or layer name>:<field name>=<field value>

If Views (Themes) are set up in the QGIS project, it will also be possible to parameterize them in the webgis URL:

• Ex: <url>?map_theme=<theme_name>

Pannello Strumenti

Metadati

I Metadati riportati in questa sessione derivano da quelli impostati a livello di progetto QGIS.

Tale contenuto è diviso in tre sessioni: Generale, Info Spaziali e Strati.

• Generale: riporta i metadati definiti su progetto QGIS a livello di menù Progetto → Proprietà Progetto, sessione Server OWS, Capabilities del servizio. In caso di accesso come utente anonimo in questa sessione è presente anche l”URL del servizio WMS di tael progetto.

• Info Spaziali: riporta il codice EPSG del sistema di proiezione associato al progetto QGIS e la BoundingBox relativa all”estensione iniziale di pubblicazione, definita a livello di menù Progetto → Proprietà Progetto, sessione Server OWS, Capabilities WMS, Estensione pubblicata

• Layer: riporta i metadati associati ai singoli layer. Metadati definiti a livello delle Proprietà del layer

Charts

View graphs created using QGIS DataPlotly and activated at the admin session level.

Check the plots in the list and consult them on the rigth panel.

The graphs are filterable based on the:

• features visible on the map

• filter based on the selected features

These filters are also reflected on the plots associated to the related data (in 1:N mode) based on the visible and/or selected parent features.

The filter based on the map content can be activated globally on all plots (icon at the top of the panel dedicated to charts) or on only some specific plots (icon placed at the level of the individual plots).

The plots will automatically update after pan and zoom operations on the map

If activated, the filter based on the selected features is automatically activated on all related plots (associated with the same layer and with the 1:N relationed tables)

Appropriate messages at the single plots level will indicate the activation of these filters.

Charts based on 1:N data relation (child layer)

If the chart is linked to a child layer in a 1:N relation, it can also be displayed at the information level of the individual parent features

Stampa

Strumento di stampa basato sui layout definiti su progetto QGIS.

Lo strumento permette di scegliere:

• Template: layout di stampa tra quelli associati al progetto QGIS pubblicato

• Scala: scala di stampa

• DPI: risoluzione di stampa

• Rotazione: angolo di rotazione

• Formato: stampa in PDF o JPEG

• Custom title: using the ItemIDs at the print layout level of the QGIS project it is possible to insert one or more labels with customized content in the print from WebGis

On the map, a light rectangular area will allow you to define the print area.

If an Atlas type print layout is associated in the QGIS project, the layout reference will be available. The cards to be printed are defined by referring to the atlas identifier defined in the print layout.

WMS

Through this tool the user can add custom WMS layers to the WebGis service.

The user can add one or more WMS service by defining:

• custom title

• WMS URL

After that, using the + key it is possible to view the list of maps associated with the service, choose which one to load by defining:

• the position (top or buttom) with respect to the other layers of the project

• the layer to load

• the projection system to be associated

• a custom name

When the first custom WMS is added, a new tab (WMS) appears in the TOC; here you can switch on/off or delete the individual added WMS layers.

The added WMS layer cannot not be queried.

The list of WMS services and the specific WMS layers added will remain available to the user until the browser cache is cleared.

Search and Query Builder

A classic Query Builder is present at the Search menu level. Through this tool it is possible to:

• carry out alphanumeric searches on geometric layers

• save the query to reuse it until the end of the work session

• edit a previously saved query

The saved query will be available until the browser cache is cleared

NB: fields not exposed as QGIS project-level WMS are not available for query building.

The Search menu contains the list of search tools defined through the Administration panel and custom searches created with the Query Builder.

Si sceglie la ricerca di interessa, si compilano i campi richiesti e si clicca sul tasto Cerca.

Sul lato destro del client si aprirà il pannello con la lista dei risultati, per ogni risultato saranno visualizzati i primi tre campi della tabella associata.

Posizionandosi sui singoli risultati, la features corrispondente verrà evidenziata in mappa; cliccando sui singoli risultati si potranno consultare tutti gli attributi associati alla feature.

Zoom to features and download icons are available for results (single or cumulative)

Mappa

This session has three tabs:

• Strati: elenco strutturato degli strati, definito su progetto QGIS

• Basi: scelta della mappa di base tra quelle definite a livello di creazione Gruppo Cartografico

• Legend: graphic legend

Layers

This tab shows the layers prepared on QGIS projects with the same organization the groups and subgroups.

If the Show features count function is activated in the project, the layer will show the number of total features and based on the subdivision linked to the symbology.

In case of multistyle associated with the layer, the number of geometries reported will vary following the passage from one style to another.

In the list of layers, right click on the name of the single layer shows the following items:

• Name and kind of geometry of the layer

• Metadata: descriptive information inherited from what has been defined, at QGIS project level, in the “Abstract” form of the “QGIS Server” session of the “Layer Properties”

• Styles: to choose the style to be applied to the layer, in the case of multi-style layers

• Abstract: a text (also html) defined in the Layer Properties, Metadata session, Identification tab, Abstract form.

• Zoom to layer: per zoommare all”estensione del layer

• Open attribute table: to consult the associated attribute table

• Download shapefile: to download the layer as a shapefile; function activatable from the administration panel

• Download GEOTIFF: to download a raster in GeoTiff format, full layer or clipped to the extent of the canvas; function activatable from the administration panel

• Download GeoPackage: to download the layer as a GeoPackage; function activatable from the administration panel

• Download CSV: to download the layer as a CSV; function activatable from the administration panel

• Download XLS: to download the layer as a XLS; function activatable from the administration panel

• WMS/WFS URL: URL of the WMS/WFS service relative to the project or URL of the external WMS

Double clicking on the layer or Layer Group zooms to the extent of the layer or Group content.

It is possible to hide, automatically, layers from the TOC when they have no records.

Useful when using filters on layers or geographic views.

Attribute table

The attribute table (resizable) is equipped with paging function, highligth function and zooming to the associated features.

In caso di presenza di link a contenuti multimediali, saranno visualizzabili le anteprime delle immagini e/o il tasto Apri per la consultazione di diversa tipologia di contenuto.

The window is resizable.

A generic filter, positioned at the top right, is applied generically to the contents of all the fields and it will allow you to filter the list of displayed records.

Filters based on the contents of the individual fields are available at the top of each column.

The Show features visible on the map icon allows you to filter the records of the table according to the features visible in the map.

From this version it is possible to select the features of the individual layers and apply filters that will affect:

• on the map content

• on the attribute table content

• on the contents of the plots

• on print contents (only with QGIS 3.18)

The selection of features can be made:

• at the attribute table level (through the checkboxes on the left of each records)

• on the results of a query (add / remove from current selection)

• on the results of a query (add / remove from current selection)

At the same time, additional icons appear:

• on the layer attribute table

• to the right of the layer on the TOC

• at the level of the relevant plots

Aggiungi immagine: g3wclient_selection.png The icons in the attribute table allow you to:

• Clear selection

• Invert selection

• Add/Remove filter

The icons to the right of the layer on the TOC allow you to:

• Clear selection

• Add/Remove filter

When one or more features are selected, they appear highlighted in red on the map. Activation of the filter is reflected:

• on the map content

• on the attribute table content

• on the data displayed by plots

• on the print contents (only with QGIS 3.18)

Base layer

The list shows the active base layers at the cartographic group level.

If the user has created base layers starting from cached layers, these may also be present.

Legend

If at the publication level of the QGIS project, the Legend position option i setted as TOC, this panel will be not present and the legend will be rendered inside layers TOC.

If the option is activated on the QGIS project, the legend is filtered on the map content.

Time series

NB: the Time Series function is only available with a QGIS Server version >= 3.26

This version of G3W-SUITE manages the temporal aspects for both vector and raster layers but with limitations:

• vector layers: limited to the Single field with Date/Time configuration

• raster layers: Mesh layer

• WMS-T

It is possible to create animations based on multiple temporal layers both raster and vector.

If in the QGIS project a temporal vector/raster layer on which the Dynamic temporal control property has been activated is present, the client will show an additional panel called Time series.

This panel will allow you to:

• define the start/end date of the time series

• define the step of the animation

• start and manage the temporal animation

The modification of the start date of the series will determine the updating of the map with the visualization of the layer in coherence with the chosen date.

Pay attention: to use the Time series function for raster data, it must also be activated at the level of the G3W-ADMIN layer properties.