Viewfinder Panoramas: Difference between revisions

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[[Category: Online Data]][[Category: Digital Elevation Models]]
[[Category: Online Data]][[Category: Digital Elevation Models]]
== Introduction ==
== Introduction ==
The Viewfinder Panoramas dataset is a digital elevation dataset with focus on the areas outside SRTM coverage. Also, the dataset has been focusing on fixing the voids in the SRTM dataset, e.g. by improving the DEM data in mountainous terrains. The dataset is developed by Jonathan de Ferranti and published on his website www.viewfinderpanoramas.org. Sources for the DEM models are typically Russian military maps in scales 1:100000 and 1:200000, but also other local and global sources are used, see the table below.  
[[File:ExampleSRTM.png|right|thumb|350px|Satellite Image with DEM Overlay. The image shows a part of the Ometepe Island in Lake Nicaragua with SRTM height contour data.]]
The Viewfinder Panoramas dataset is a digital elevation dataset with focus on the areas outside SRTM coverage. Also, the dataset has been focusing on fixing the voids in the SRTM dataset, e.g. by improving the DEM data in mountainous terrain. The dataset is developed and maintained by Jonathan de Ferranti and published on his website [http://www.viewfinderpanoramas.org http://www.viewfinderpanoramas.org]. Please note: Johathan de Ferranti is continously updating and improving the data, so it might be worth giving his web-site a review if you find that data in WindPRO is missing.
 
=== Dataset Overview ===
* '''Spatial Coverage:''' Outside SRTM coverage and areas where SRTM has voids (see image to the right).
* '''Resolution:''' 3 arc-second (approximately 90m)
* '''Data-type:''' [[:Category%3ADigital_Elevation_Models#What_type_of_elevation_model.3F_DEM.2C_DSM_and_DTM.3F|Digital Surface Model (DSM)]]
* '''Coordinate system (horizontal):''' Geographic WGS (EPSG:4326)
* '''Version:''' N/A
* '''Vertical Accuracy:''' N/A
* '''Raw data:''' HGT format, i.e. the same distribution format as the [[Shuttle_Radar_Topography_Mission|SRTM dataset]].
 
== Coverage ==
The figure and table below summarizes the coverage and the different available regions in the Viewfinder Panoramas dataset. Please refer to [http://www.viewfinderpanoramas.org http://www.viewfinderpanoramas.org] for further details.
[[File:ViewfinderPanoramasCoverage.png|right|350px|thumb|Coverage of the Viewfinder Panoramas Dataset]]
 
== Data Sources ==
The table below shows the sources used by Jonathan de Ferranti in developing the DEM models. Sources for the DEM models are typically Russian military maps in scales 1:100000 and 1:200000, but also other local and global sources are used, see the table below.  
{| class="wikitable"
|+ align="bottom"|Table: Data Sources in the Viewfinder Panoramas dataset.
! Dataset Region
! Sources
|-
| High Asia   
| SRTM, Russian 1:100000 and 1:200000, Nepal 1:50000 and various other
|-
| Andes     
| SRTM, local 1:50000 and 1:100000 topographical maps
|-
| Alps 
| Local 1:25000 and 1:500000; Russian 1:100000; SRTM (limited use only)
|-
| Greenland 
| Local 1:25000 and 1:500000; Russian 1:100000; SRTM (limited use only)
|-
| North Eurasia, including Scandinavia and Siberia   
| Russian 1:100000 and 1:200000, 1:50000 topographical maps of Norwegian Jotunheimen, More and Romsdal.
There is some input from SRTM for Finland and Russia south of 60°21'; otherwise these data are wholly from topographic maps.
|-
| North Atlantic, including Iceland, Faeroes and Shetland
| Russian 1:100000 and 1:200000; 1:100000 topographical maps of Iceland and Svalbard
|-
| Other Europe 
| Varies: Russian 1:50000, 1:100000, 1:200000; more detailed topographical maps locally, SRTM
|-
| Africa   
| SRTM, local maps, photographs, Russian 1:100000
|-
| Antarctica     
| 200m DEM from Radarsat Antarctic Mapping Project Digital Elevation Model Version 2 (NSIDC). The data was re-sampled to 3".
|-
| Others 
| Varies: SRTM, Landsat, Russian 1:100000 1:200000, Local maps 1:25000 1:50000 1:100000 1:250000
|}


== Availability from within WindPRO ==
== Availability from within WindPRO ==
 
The data is available directly from within WindPRO. The data can be reached from the online-services in the following objects:
[[File:ExampleSRTM.png|left|thumb|200px|Satellite Image with DEM Overlay. The image shows a part of the Ometepe Island in Lake Nicaragua with SRTM height contour data.]]The data is available directly from within WindPRO. The data can be reached from the online-services in the following objects:


* Line Object (with purpose to height contour lines)
* Line Object (with purpose to height contour lines)
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In addition to loading the data directly from the EMD online services, then WindPRO also supports importing the *.hgt files that can be downloaded from the internet homepage of Jonathan de Ferranti.
In addition to loading the data directly from the EMD online services, then WindPRO also supports importing the *.hgt files that can be downloaded from the internet homepage of Jonathan de Ferranti.


== Data Type ==
== License and Attribution ==
Raw data are stored in the HGT format, i.e. the same distribution format as the [[Shuttle_Radar_Topography_Mission|SRTM dataset]].
The dataset is available in WindPRO by courtesy of Jonathan de Ferranti and his website [http://www.viewfinderpanoramas.org www.viewfinderpanoramas.org].<br>
 
We recommend that you use a proper attribution when using this dataset, such as:
== Coverage ==
<pre>
[[File:SRTMCoverage.png|right|300px|thumb|Near-global coverage of the SRTM dataset]]About 80% of the total landmass of the Earth is mapped by the STRM data, covering all land between 56 degrees south and 60 degrees northern latitude. A view of the data coverage is shown in the figure below.
Contains: Viewfinder Panoramas data created by Jonathan de Ferranti and available through www.viewfinderpanoramas.org.
 
Distribution through EMD and windPRO.  
== Versions and Data Sources ==
</pre>
Different versions of the SRTM data exist; at EMD we currently distribute the STRM data version 3.The difference between various versions is primarily that more error checking and validation is applied at later versions.
 
An alternative SRTM dataset with a higher spatial resolution of 1 arc second (about 30 m) is also available for the US and its territories. Currently this dataset is currently not available through the EMD online services, but it is possible to manually download the data and load the data into a line object.


== External Links ==
== External Links ==
* Original data is available from the NASA website at [http://www2.jpl.nasa.gov/srtm http://www2.jpl.nasa.gov/srtm].
* Original data is available from the Viewfinder Panoramas web-page created by Jonathan de Ferranti's  [http://www.viewfinderpanoramas.org http://www.viewfinderpanoramas.org].
* More information on SRTM is available at wikipedia at [http://en.wikipedia.org/wiki/Shuttle_Radar_Topography_Mission http://en.wikipedia.org/wiki/Shuttle_Radar_Topography_Mission]
 
== Acknowledgement ==
NASA, team around STS-99 and the US public are thanked for making this great digital elevation dataset available in the public domain and thus for aiding the development of renewable energy.

Latest revision as of 13:01, 24 June 2020

Introduction

Satellite Image with DEM Overlay. The image shows a part of the Ometepe Island in Lake Nicaragua with SRTM height contour data.

The Viewfinder Panoramas dataset is a digital elevation dataset with focus on the areas outside SRTM coverage. Also, the dataset has been focusing on fixing the voids in the SRTM dataset, e.g. by improving the DEM data in mountainous terrain. The dataset is developed and maintained by Jonathan de Ferranti and published on his website http://www.viewfinderpanoramas.org. Please note: Johathan de Ferranti is continously updating and improving the data, so it might be worth giving his web-site a review if you find that data in WindPRO is missing.

Dataset Overview

  • Spatial Coverage: Outside SRTM coverage and areas where SRTM has voids (see image to the right).
  • Resolution: 3 arc-second (approximately 90m)
  • Data-type: Digital Surface Model (DSM)
  • Coordinate system (horizontal): Geographic WGS (EPSG:4326)
  • Version: N/A
  • Vertical Accuracy: N/A
  • Raw data: HGT format, i.e. the same distribution format as the SRTM dataset.

Coverage

The figure and table below summarizes the coverage and the different available regions in the Viewfinder Panoramas dataset. Please refer to http://www.viewfinderpanoramas.org for further details.

Coverage of the Viewfinder Panoramas Dataset

Data Sources

The table below shows the sources used by Jonathan de Ferranti in developing the DEM models. Sources for the DEM models are typically Russian military maps in scales 1:100000 and 1:200000, but also other local and global sources are used, see the table below.

Table: Data Sources in the Viewfinder Panoramas dataset.
Dataset Region Sources
High Asia SRTM, Russian 1:100000 and 1:200000, Nepal 1:50000 and various other
Andes SRTM, local 1:50000 and 1:100000 topographical maps
Alps Local 1:25000 and 1:500000; Russian 1:100000; SRTM (limited use only)
Greenland Local 1:25000 and 1:500000; Russian 1:100000; SRTM (limited use only)
North Eurasia, including Scandinavia and Siberia Russian 1:100000 and 1:200000, 1:50000 topographical maps of Norwegian Jotunheimen, More and Romsdal.

There is some input from SRTM for Finland and Russia south of 60°21'; otherwise these data are wholly from topographic maps.

North Atlantic, including Iceland, Faeroes and Shetland Russian 1:100000 and 1:200000; 1:100000 topographical maps of Iceland and Svalbard
Other Europe Varies: Russian 1:50000, 1:100000, 1:200000; more detailed topographical maps locally, SRTM
Africa SRTM, local maps, photographs, Russian 1:100000
Antarctica 200m DEM from Radarsat Antarctic Mapping Project Digital Elevation Model Version 2 (NSIDC). The data was re-sampled to 3".
Others Varies: SRTM, Landsat, Russian 1:100000 1:200000, Local maps 1:25000 1:50000 1:100000 1:250000

Availability from within WindPRO

The data is available directly from within WindPRO. The data can be reached from the online-services in the following objects:

  • Line Object (with purpose to height contour lines)
  • Elevation Grid Object

In addition to loading the data directly from the EMD online services, then WindPRO also supports importing the *.hgt files that can be downloaded from the internet homepage of Jonathan de Ferranti.

License and Attribution

The dataset is available in WindPRO by courtesy of Jonathan de Ferranti and his website www.viewfinderpanoramas.org.
We recommend that you use a proper attribution when using this dataset, such as: 

Contains: Viewfinder Panoramas data created by Jonathan de Ferranti and available through www.viewfinderpanoramas.org.
Distribution through EMD and windPRO.

External Links

Retrieved from "http://help.emd.dk/mediawiki/index.php?title=Viewfinder_Panoramas&oldid=11888"