Update docs

Author: lorenz3tla

docs/doc_connect_to_db.rst

@@ -3,7 +3,7 @@ Connect to Talsim DB
 ====================
 
       The second functionality of QTalsim allows users to connect to a Talsim Database, load system elements, sub-basins, outflows and transport reaches. 
-      Moreover, users can edit all existing system-elements and the geometries of sub-basins and transport reaches. It is also possible to import sub-basins and transport reaches from 	external layers.
+      Moreover, users can edit all existing system-elements and the geometries of sub-basins and transport reaches. It is also possible to import sub-basins, transport reaches and outflows from 	external layers.
 
    |DB Connection Overview|
 
@@ -73,6 +73,18 @@ External TransportReaches Layer
 
 	|External TP Layer|
 
+
+External Outflows Layer 
+-------------------------------
+.. _external-transport-reach-layer:
+
+	Similarly to inserting external sub-basins and transport reaches, the plugin provides functionality to insert outflows between existing system elements using the corresponding window-tab. The user selects a layer containing the outflows to be imported from the list of external layers. The user has to map input fields to Talsim fields.
+
+	By clicking 'Save New/Updated Features in DB,' the outflows are saved to the database.
+
+	|External Outflows|
+
+
 Update Coordinates to Center of Geometry
 ----------------------------------------
 .. _update-coordinates:
@@ -96,6 +108,9 @@ Update Coordinates to Center of Geometry
 .. |Update Coordinates| image:: qtalsim_screenshots/db_updateAllCoordinates.png
    :target: qtalsim_screenshots/db_updateAllCoordinates.png
 
+.. |External Outflows| image:: qtalsim_screenshots/db_externalOutflowsLayer.png
+   :target: qtalsim_screenshots/db_externalOutflowsLayer.png
+
 
 
 

docs/doc_soil.rst

@@ -17,7 +17,7 @@ Executing the Plugin
    -  A target CRS to which the output layers will be transformed.
 
 
-   When the "Download ISRIC Data" button is clicked, the plugin downloads data for clay, silt and sand share, and bulk density within the area defined by the bounding box. The raster files are saved in the specified output folder. The original output files, as returned by ISRIC (in the Homolosine projection), are stored in the 'orig' folder, while the reprojected files (in the user-defined projection) are stored in the 'proj' folder. Each of these folders will contain four files for each of the six soil layers.
+   When the "Download ISRIC Data" button is clicked, the plugin downloads data for clay, silt and sand share, and bulk density within the area defined by the bounding box. The original soil data has a spatial resolution of 250 m × 250 m. If a coarser resolution is required, the data can be resampled using the Resample option (resampling algorithm: Average). The raster files are saved in the specified output folder. The original output files, as returned by ISRIC (in the Homolosine projection), are stored in the 'orig' folder, while the reprojected files (in the user-defined projection) are stored in the 'proj' folder. Each of these folders will contain four files for each of the six soil layers.
 
    When pressing "Calculate Soil Type", in the first step, the plugin recalculates the values from the mapped units to conventional units, as defined `here <https://www.isric.org/explore/soilgrids/faq-soilgrids#What_do_the_filename_codes_mean>`__. Then, the soil type for each cell is calculated using the clay, silt, and sand proportions, following the soil texture triangle below. The results are saved to the output folder and added to the current QGIS project. In the layer "Soil Types Combined" the soil types of the soil layers are displayed in the different columns of the layer. Additionally, the bulk density values are recalculated and are assigned to the respective bulk density class. The soil types and bulk density class values are intersected and merged into one layer. This vector layer holds the BDOD class and soil type name for every cell. The layer "Soil Types BDOD Combined" can be used as soil layer input to "QTalsim HRU calculation".