有些朋友在使用QGIS打开ESRI的*.mdb数据时,会报错:“Invalid Data Source : PGeo:D:\MyData\arcgis tutorial data\ArcTutor\DatabaseServers\community.mdb is not a valid or recognized data source.” 该问题的解决步骤如下: 第一步:下载和安装64位Access数据库引擎 打开网址:https://www.microsoft.com/zh-...
无效的数据源 / Invalid dataSource 遇到这个问题可以先使用添加栅格图层或者添加网孔图层添加数据试一下。如果还是不行,根据小编查询到的结果,QGIS使用的是GDAL来支持的,先在命令行中使用gdalinfo来查看数据源是否有效。 gdalinfo xxxx/xxxxx/xxxx.nc 小编通过这个命令查看后,发现报错: "the format is not a valid...
I am trying to import a DWG file from Autodesk. With a new project holding no data, either importing via Project, Import or when I drag the file onto the program gives an error message; "Invalid Data Source: cex-02 CAD 2000.dwg is not a valid or recognized data source." The file ...
QString msg= tr("%1 doesn't have any layers").arg( basename ); QMessageBox::critical(this,"Invalid Data Source",msg);deletelayer; } }//步骤3:将图层集合添加到画布中m_mapCanvas->setLayerSet(m_mapCanvasLayerSet);//设置图层集合m_mapCanvas->setVisible(true);//设置是否可见m_mapCanvas->...
Invalid Data Source : http-header:referer=&interpretation=terrariumterrain&url=file:///C:/OSGeo4W_V2_6/TILES/%7Bz%7D/%7Bx%7D/%7By%7D.png&type=xyz&url=file:///C:/OSGeo4W_V2_6/TILES/%7Bz%7D/%7Bx%7D/%7By%7D.png&zmax=8&zmin=5 is not a valid or recognized data source. ...
vecLayer->isValid()) { QMessageBox::critical(this,tr("error"),tr("invalid layer"))...
在上面函数可以看到一个memory字典中获取方法是 getFileSize(rasterLayer.source()) ,这是一个获取文件大小的函数,我们在qgisUtils中创建新函数: D:\learnPyQGIS\qgisUtils\yoyiFile.py import os import os.path as osp def getFileSize(filePath): ...
3.1vectorlayers toloadavectorlayer,specifylayersdatasourceidenti er,nameforthelayerandprovidersname: thedatasourceidenti erisastringanditisspeci yersnameisusedint 34、he layerlistwidget.itisimportanttocheckwhetherthelayerhasbeenloadedsuccessfully.ifitwasnot,aninvalid layerinstanceisreturned. thequickestwaytoopen...
How toconnect QGIS to oracle spatial. QGIS can now connects to oracle to view spatial data and process it, great news for an open source software believers. As a newbie toQGISuser, i can just give a way, that i connected to it. ...
If you need to visualize (non-spatial) data stored in your PostgreSQL database,there area few different options. You might look into some of the open sourceGUI toolsout there, build your own custom solution with Python or R, or resort to a commercial solution. ...