QGIS Configuration¶

General Menu¶

Application

• Select the Style (QGIS restart required) and choose between ‘Oxygen’,’Windows’,’Motif’,’CDE’, ‘Plastique’ and ‘Cleanlux’ ().
• Define the Icon theme . Currently only ‘default’ is possible.
• Define the Icon size .
• Define the Font. Choose between QT default and a user-defined font.
• Change the Timeout for timed messages or dialogs .

• :guilabel:Ǹão exibir tela inicial (splash screen)

• :guilabel:`Mostrar dicas ao iniciar’

• Bold group box titles
• QGIS-styled group boxes
• Use live-updating color chooser dialog

Project files

• Open project on launch (choose between ‘New’. ‘Most recent’ and ‘Specific’. When choosing ‘Specific’ use the to define a project)
• Create new project from default project. You have the possibility to press on Set current project as default or on Reset default. You can browse through your files and define a directory where you find your user-defined project templates. There will be an entry in Project ‣ New From Template if you first activate Create new project from default project and then save a project in the project templates folder.
• Prompt to save project and data source changes when required
• Warn when opening a project file saved with an older version of |qg|
• Enable macros . This option was created to handle macros which are written to perform an action

on project events. You can chosse between ‘Never’, ‘Ask’, ‘For this session only’ and ‘Always (not recommended)’.

System Menu¶

Environment

System environment variables can now be viewed and many configured in the Environment menu (see figure_environment_variables). This is useful for platforms, such as Mac, where a GUI application does not necessarily inherit the user’s shell environment. It’s also useful for setting/viewing environment variables for the external tool sets controlled by the processing toolbox, e.g. SAGA, GRASS; and, for turning on debugging output for specific sections of the source code.

• Use custom variables (restart required - include separators). You can Add and Remove variables. Current environment variables ‣ are displayed below and it’s possible to Show only QGIS-specific variables.

Figure System Environment:

System environment variables in QGIS

Plugin paths

• Add or Remove Path(s) to search for additional C++ plugin libraries

Data Sources Menu¶

Feature attributes and table

• Open attribute table in a dock window (QGIS restart required)
• Copy geometry in WKT representation from attribute table. When using ^{Copy selected rows to clipboard} from the Attribute table menu then this has the result that also the coordinates of points or vertices are copied to the clipboard.
• Attribute table behaviour . There are three possibilities: ‘Show all features’, ‘Show selected features’ and ‘Show features visible on map’
• Attribute table row cache . This row cache makes it possible to save the last loaded x attribute rows so that working with the attribute table will be quicker. The cache will be deleted when closing the attribute table.
• Representation for NULL values Here you can define a value for data fields containing a NULL value.

Data source handling

• Scan for valid items in the browser dock . You can choose between ‘Check extension’ and ‘Check file contents’.
• Scan for contents of compresses files (.zip) in browser dock . ‘No’, ‘Basic scan’ and ‘Full scan’ are possible.
• Prompt for raster sublayers when opening. Some rasters support sublayers - they are called subdatasets in GDAL. An example is netcdf files - if there are many netcdf variables, GDAL sees every variable as a subdataset. The option is to control how to deal with sublayers when a file with sublayers is opened. You have the following choices:
  • ‘Always’: always ask (if there are existing sublayers)
  • ‘If needed’: ask if layer has no bands, but has sublayers
  • ‘Never’: never prompt, will not load anything
  • ‘Load all’: never prompt, but load all sublayers
• Ignore shapefile encoding declaration. If a shapefile has encoding information this will be ignored by QGIS.
• Add PostGIS layer with double click and select in extended mode
• Add Oracle layers with double click and select in extended mode

Rendering Menu¶

Rendering quality

• Fazer linhas aparecerem com menos definição para não perder performance ao renderizar

• Ajustar problemas com polígonos preenchidos incorretamente

Rasters

• with RGB band selection you can define the number for the Red, Green and Blue band.

Contrast enhancement

• Single band gray . A single band gray can have ‘No stretch’, ‘Stretch to MinMax’, ‘Stretch and Clip to MinMax’ and also ‘Clip to MinMax’
• Multi band color (byte/band) . ‘No stretch’, ‘Stretch to MinMax’, ‘Stretch and Clip to MinMax’ and ‘Clip to MinMax’.
• Multi band color (>byte/band) . ‘No stretch’, ‘Stretch to MinMax’, ‘Stretch and Clip to MinMax’ and ‘Clip to MinMax’.
• Limits (minimum/maximum) . ‘Cumulative pixel count cut’, ‘Minimum/Maximum’, ‘Mean +/- standard deviation’
• Cumulative pixel count cut limits
• Standard deviation multiplier

Debugging

• Show these events in the Log Message panel (under rendering tab): Map canvas refresh

Canvas and Legend Menu¶

Default map appearance (overridden by project properties)

• Define a Selection color and a Background color.

Layer legend

• Double click action in legend . You can either ‘Open layer properties’ or ‘Open attribute table’ with the double click.
• the following Legend item styles are possible
  • Capitalise layer names
  • Bold layer names
  • Bold group names
  • Display classification attribute names
  • Create raster icons (may be slow)

  • Adiciona novas camadas ao grupo selecionado

Map tools Menu¶

Identify

• Abrir resultados identificados numa pequena janela (necessário reiniciar QGIS)

• A configuração do :guilabel: Modo determina qual camada será visualizada na ferramenta de identificação. Trocando para ‘De cima para baixo’ ou ‘De cima para baixo, parando no primeiro’ ao invés de ‘Camada atual’ os atributos para todas as camadas identificáveis (ver seção Propriedade do projeto :ref:’sec_projects’ para configurar qual camada será identificável) serão mostradas com a ferramenta de identificação.

• Abrir formulário de feição, se uma feição simples for identificada

• Define :guilabel: Estabelecer um raio para identificar feições e mostrar no mapa

Measure tool

• Definir :guilabel: Cor da linha de medida

• Definir :guilabel: Casas decimais

• Mandter unidade base

• Preferred measurements units (‘meters’ or ‘feet’)`
• Preferred angle units (‘Angle’, ‘Radians’ or ‘Gon’)

Panning and zooming

• Define Mouse wheel action (‘Zoom’, ‘Zoom and recenter’, ‘Zoom to mouse cursor’, ‘Nothing’)

• Definir :guilabel: Fator de aproximação/afastamento para ação da roda do mouse

Predefined scales

Here you find a list of predefined scales. With the ‘+’ and ‘-‘ buttons you can add or remove your individual scales.

Digitizing Menu¶

Feature creation

• Suprimir atributos de janelas pop-up depois de cada feição criada

• Reutilizar útimo valor de atributo inscrito

• Validate geometries. Editing complex lines/polygons with many nodes can end up with very slow rendering. This is because the default validation procedures in QGIS can use a lot of time. To speed up rendering it is possible to select GEOS geometry validation (starting from GEOS 3.3) or to switch it off. GEOS geometry validation is much faster, but the disadvantage is that only the first geometry problem will be reported.

Rubberband

• Define Rubberband Line width and Line color

Snapping

• Abrir opções de ajuste em uma janela flutuante (necessário reiniciar QGIS)

• Define Default snap mode (‘To vertex’, ‘To segment’, ‘To vertex and segment’, ‘Off’)
• Define Default snapping tolerance in map units or pixels
• Define the Search radius for vertex edits in map units or pixels

Vertex markers

• Mostrar marcadores apenas para feições selecionadas

• Define vertex Marker style (‘Cross’ (default), ‘Semi transparent circle’ or ‘None’)
• Define vertex Marker size

Curve offset tool

As próximas 3 opções se referem a ferramenta |mActionOffserCurve| ^{curva de deslocamento} na Seção de edição avançada. Através de várias configurações, é possível influenciar o formato da linha de deslocamento. Tais opções estão disponíveis a partir do GEOS 3.3 .

• Join style for curve offset
• Quadrant segments for curve offset

• Limite ‘milter’ para o deslocamento da curva

GDAL Menu¶

GDAL is a data exchange library for raster files. In this tab you can Edit create options and Edit Pyramids Options of the raster formats. Define which GDAL driver to be used for a raster format as in some cases more than one GDAL driver is available.

CRS Menu¶

Default CRS for new projects

• Automatically enable ‘on the fly’ reprojection if layers have different CRS

• |chackbox|Habilitar reprojeção ‘on the fly’ como padrão

• Select a CRS and Always start new projects with this CRS

CRS for new layers

This area allows to define the action, when a new layer is created, or when a layer without CRS is loaded.

• Prompt for CRS
• Use project CRS
• Use default CRS displayed below

Aba Região¶

• Sobrepor idioma do sistema e Escolha o idioma a ser usado

• Informação sobre região ativa

Aba Rede¶

General

• Definir Buscar endereço WMS, o padrão é http://geopole.org/wms/search?search=\%1\&type=rss

• Define Timeout for network requests (ms) - default is 60000
• Define Default expiration period for WMSC/WMTS tiles (hours) - default is 24

Figure Network Tab:

Proxy-settings in QGIS

Cache settings

Define the Directory and a Size for the cache.

• Usar proxy para acessar a web e define ‘Máquina’, ‘Porta’, ‘Usuário’ e ‘Senha’.

• Set the Proxy type according to your needs.
  • Default Proxy: Proxy is determined based on the application proxy set using
  • Socks5Proxy: Generic proxy for any kind of connection. Supports TCP, UDP, binding to a port (incoming connections) and authentication.
  • HttpProxy: Implemented using the “CONNECT” command, supports only outgoing TCP connections; supports authentication.
  • HttpCachingProxy: Implemented using normal HTTP commands, it is useful only in the context of HTTP requests
  • FtpCachingProxy: Implemented using an FTP proxy, it is useful only in the context of FTP requests

Excluding some URLs can be added to the text box below the proxy-settings (see Figure_Network_Tab).

Se você precisa de informações detalhadas sobre as diferentes configurações de proxy, consulte o manual do QT-library-documentation no endereço http://doc.trolltech.com/4.5/qnetworkproxy.html#ProxyType-enum.

You can modify the options according to your needs. Some of the changes may require a restart of QGIS before they will be effective.

• settings are saved in a text file: $HOME/.config/QGIS/qgis.conf
• you can find your settings in: $HOME/Library/Preferences/org.qgis.qgis.plist
• settings are stored in the registry under: HKEY\CURRENT_USER\Software\QGIS\qgis