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What is a Web Map Service in QGIS?
3.1. Web Map Service (WMS) ¶ The 1.1.1 and 1.3.0 WMS standards implemented in QGIS Server provide a HTTP interface to request map or legend images generated from a QGIS project. A typical WMS request defines the QGIS project to use, the layers to render as well as the image format to generate.
How are WMS standards implemented in QGIS server?
The 1.1.1 and 1.3.0 WMS standards implemented in QGIS Server provide a HTTP interface to request map or legend images generated from a QGIS project. A typical WMS request defines the QGIS project to use, the layers to render as well as the image format to generate.
When does QGIS server mark a request as invalid?
When such a request comes, QGIS Server is caching the response and marking the cache valid. At the same time, it watches if the project file changes. If the project is changed then the cache is marked as invalid and QGIS Server waits for a new request in order to recreate the cache.
Why are SVG files not included in QGIS?
If you’re using the QGIS project with styling based on SVG files using relative paths then you should know that the server considers the path relative to its qgis_mapserv.fcgi file (not to the qgs file). So, if you deploy a project on the server and the SVG files are not placed accordingly, the output images may not respect the Desktop styling.
Is it hard to write a QGIS request?
Naturally, it’s hard to write your GetMap, GetPrint etc. requests. QGIS Web Client or QWC is a Web client project that can work alongside QGIS Server so that you can publish your projects on the Web or help you create QGIS Server requests for a better understanding about the possibilities.
How is QGIS different from other WMS software?
In contrast to other WMS software, the QGIS Server uses cartographic rules as a configuration language, both for the server configuration and for the user-defined cartographic rules. As QGIS desktop and QGIS Server use the same visualization libraries, the maps that are published on the web look the same as in desktop GIS.
What can QGIS server do for print composer?
QGIS server has the capability to create print composer output in pdf or pixel format. Print composer windows in the published project are used as templates. In the GetPrint request, the client has the possibility to specify parameters of the contained composer maps and labels.