DGM1 Niedersachsen

Author(s)	O.Conrad (c) 2025
Library ID	io_webservices
Tool ID	8
Version	1.0
Menu	File \| Web Services \| DGM1 Germany

Description

This tool provides easy-to-use access to the 'Digitales Geländemodell 1m (DGM1)' elevation data from the OpenGeodata server of Lower Saxony (Niedersachsen). It uses a local database in the chosen directory which provides the original tiles. If the tiles covering the requested area are not found in this directory the tool tries to download these from the server. License The geodata (open geodata) listed on this LGLN website can be used in accordance with the General Terms and Conditions of Use (GTC). The relevant terms of use can be found here under "7 Use of Open Geodata" of the GTC.

References

OpenGeoData.NI

DGM1@OpenGeoData.NI

General Terms and Conditions of Use

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Grid	grid, input	`GRID`	-	-
Input	Shapes	shapes, input	`SHAPES`	-	-
Output	DGM1	data object Grid, output, optional	`RESULT`	-	-
Options	Local Tiles Directory	file path	`TILES`	Download location for tiles. If requested tile is already present download will be skipped. Takes user's temporary directory if empty.	-
	Extent	choice	`EXTENT`	-	Available Choices: [0] user defined [1] shapes extent [2] grid system extent [3] grid system Default: 0
	Grid System	grid system	`GRID_SYSTEM`	-	-
	West	floating point number	`XMIN`	-	Default: 0.000000
	East	floating point number	`XMAX`	-	Default: 1000.000000
	South	floating point number	`YMIN`	-	Default: 0.000000
	North	floating point number	`YMAX`	-	Default: 1000.000000
	Columns	integer number	`NX`	-	Minimum: 1 Default: 1001
	Rows	integer number	`NY`	-	Minimum: 1 Default: 1001
	Buffer	floating point number	`BUFFER`	add buffer (map units) to extent	Minimum: 0.000000 Default: 0.000000
	Cellsize	floating point number	`CELLSIZE`	-	Minimum: 0.100000 Default: 1.000000
	Coordinate System Definition	text	`CRS_STRING`	Supported formats comprise PROJ and WKT strings, object codes (e.g. "EPSG:4326").	-
	Data Set	choice	`DATASET`	Download Digital Terrain Model (DGM) or Digital Surface Model (DOM)	Available Choices: [0] DGM [1] DOM Default: 0

Command Line


Usage: saga_cmd io_webservices 8 [-RESULT ] [-TILES ] [-EXTENT ] [-GRID ] [-SHAPES ] [-XMIN ] [-XMAX ] [-YMIN ] [-YMAX ] [-NX ] [-NY ] [-BUFFER ] [-CELLSIZE ] [-CRS_STRING ] [-DATASET ]
  -RESULT:        DGM1
	data object Grid, output, optional
  -TILES:         Local Tiles Directory
	file path
  -EXTENT:
                       Extent
                       	choice
                       	Available Choices:
                       	[0] user defined
                       	[1] shapes extent
                       	[2] grid system extent
                       	[3] grid system
                       	Default: 0
  -GRID:          Grid
	grid, input
  -SHAPES:        Shapes
	shapes, input
  -XMIN:       West
	floating point number
	Default: 0.000000
  -XMAX:       East
	floating point number
	Default: 1000.000000
  -YMIN:       South
	floating point number
	Default: 0.000000
  -YMAX:       North
	floating point number
	Default: 1000.000000
  -NX:            Columns
	integer number
	Minimum: 1
	Default: 1001
  -NY:            Rows
	integer number
	Minimum: 1
	Default: 1001
  -BUFFER:     Buffer
	floating point number
	Minimum: 0.000000
	Default: 0.000000
  -CELLSIZE:   Cellsize
	floating point number
	Minimum: 0.100000
	Default: 1.000000
  -CRS_STRING:    Coordinate System Definition
	text
  -DATASET:       Data Set
	choice
	Available Choices:
	[0] DGM
	[1] DOM
	Default: 0