GeoPackage Tips: Difference between revisions

*Supports spatial indexing, greatly reducing loading and viewing times, making it much faster to work within GIS packages.

*Faster to write from TUFLOW than the shapefile format.

 

= Database Organisation =

There are many ways to organise model inputs when using GPKG. This allows modellers to decide how they structure their inputs files, for example some options include:

 

== Referencing a GeoPackage Database ==

<li>To specify a table in a GPKG, use ">>":<br>

<font color="blue"><tt>Read GIS Z Shape </tt></font> <font color="red"><tt>== </tt></font> <font color="black"><tt>gis\2d_zsh.gpkg >> 2d_zsh_L </tt><br>

<font color="blue"><tt>Read GIS Z Shape </tt></font> <font color="red"><tt>== </tt></font> <font color="black"><tt>gis\2d_zsh.gpkg >> 2d_zsh_L | gis\2d_zsh.gpkg >> 2d_zsh_P </tt><br>

<li>To specify more than one table in a GPKG in the same command line, use "&&". This is similar to "|", however there is no need to reference the database again. <br>

Result and check file vector outputs can be written into separate databases or grouped, with 'grouped' being the default. Grouped databases will group by output folder location, for example, the check file folder will contain one GPKG Database that contains all check file layers within it. Separate databases will group geometries together, for example, PLOT_P, PLOT_L, PLOT_R will be written to one database. The following command can be used to set the output to either separate or grouped: <br>

<font color="blue"><tt>Spatial Database Output</tt></font> <font color="red"><tt>== </tt></font> <font color="black"><tt>SEPARATE | {GROUPED} </tt></font> <br><br>

 

= QGIS Tips & Tricks =

<li>Move a layer from one GPKG to another.<br>

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<li>Move a shapefile into a GPKG. QGIS automatically converts it to a GPKG layer.<br>

<li>In the 'Spatial Database Options' section, there are the following options:

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{{Video|name=Animation_import_layer_convert.mp4|width=1000}}

{{Video|name=Animation_import_layer_group_geom.mp4|width=1000}}

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{{Video|name=Animation_import_layer_alltoone_preexisting.mp4|width=1000}}

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For more information, see the <u>[[QGIS_TUFLOW_Apply_GPKG_Layer_Names| Updating a GPKG Layer Name]]</u>