SatelliteSurface

Satellite From Surface

Icon:
Ribbon: Roads > Model Viewer > Surface From Satellite

Introduction

The Surface From Satellite command allows users to generate a Civil Site Design Surface by referencing online elevation data. This command can be accessed directly from the Roads tab on the ribbon or via the Toggle Display dialog in Model Viewer.

The elevation data used to build this surface is attained using the Google Elevations API. Building a surface from this data is great for conceptual design or for the purpose of extending an existing Civil Site Design Surface. Currently, we have capped the point limit for a single surface at 10,000. However, you can set this limit to be unlimited if you attain a Google Elevations API Key and specify this in the Viewer Settings.

Details

Upon selecting the command the following form is displayed:

Projection List (Recommended) Prior to importing surface data, it is required that the user specify the coordinate system. Users have the option of either selecting one of the known built-in coordinate systems (via the Projection List) or specifiy a projection file. Projection files can be attained via the Spatial Reference website and should be used only if the coordinate system cannot be found in the projection list. If using the Projection List option, users will be required to first specify the category of the system and after doing so will populate a list of known coordinates systems. The Projection List is the recommended method for specifying the coordinate system, because it also contains details on how to transform coordinates systems from one to anotrher.

  Category Select the coordinate system category. For example, specify 'NationalGridsAustralia' to view known coordinates systems for Australia.

  System After selecting a category, all available coordinates systems will be listed in this drop-down box.

PRJ FIle
Prior to importing surface data, it is required that the user specify the coordinate system. Users have the option of either selecting one of the known built-in coordinate systems (via the Projection List) or specifiy a projection file. Projection files can be attained via the Spatial Reference website. On selecting the button with the 3 dots, the software will open the Model Viewer Projections Folder. If your coordinate system is not listed, then select the link to access the Spatial Reference website to search and download the .prj file for your required coordinate system.

Surface Colour Specify the colour of the Civil Site Design Surface. This colour will be used when Model Viewer is display with a Shaded Visual Style.

Units Sets whether the elevations downloaded are in metres or feet. Note: This setting does not affect the XY coordinates of the points.

Elevation Data
Allows the user to shift the elevations of the downloaded data

  No Shift

The downloaded elevations are not shifted

  Reference Surface

This option allows the user to shift the elevations by referencing an existing Civil Site Design Surface. The user is required to specify a surface and a coordinate (by selecting the picker button). The elevation taken from the existing surface is used to shift the elevations of the downloaded data. By using a Reference Surface, the software will also know where you are in the world and therefore when the satellite imagery will default to this location.

Specify Elevation This option allows the user to specify either a negative or positive value to shift the downloaded elevations on to the correct datum.

      Surface

If Reference Surface is specified, then the user will be required to select this surface from the list.

      Elevation

If Elevation is specified, then the user is required to specify the negative or positive value for the elevation shift.

Style
Allows the user to specify a style for the label

  Label Style

Specify the label style that is assigned to the label. Users can customise the style via the Label Styles command.

  Leader Height Set the height of the label leader. This height is measured from the level calculated from the surface elevation.

Elevation
Allows the user to specify the surface that is used to interpolate the elevation the label uses.

  Surface Select a surface from the drop-down list

Confirm Satellite Data The Surface from Satellite window is displayed allowing users to define the area to generate the Civil Site Design Surface.

Cancel Exit the command without building a new Civil Site Design Surface.

Upon selecting the Confirm Satellite Data button, the following window is displayed. This window allows the user to specify the area to generate the Civil Site Design Surface.

Map Providor Specify the map providor you would like to reference. Options include Bing Maps, Google Maps, and NearMaps - NearMaps can only be used once credentials are specified in the Viewer Settings.

Search Field The first step is to search for the area. In the search field (defaulting to the text 'Melbourne'), type in the address and select the ENTER key. If found, the software will pan to the location. By holding down the right-mouse button, users can pan around the view.

Define Area

Once zoomed to the location of choice, use the Define Area button to specify the area. Upon selecting the button, the user is first required to select the top-right corner of the area. On doing so, the software will shift the view to this location. Next, the user is required to select the bottom-right corner. Upon doing so, a red area is highlighted indicating the area to be downloaded.

Clear Area

This option allows the user to clear the currently defined area allowing the user to define a new area.

Grid Interval This value is the intensity of the points downloaded. As this value is edited, the Point Count value will changed so the user is aware of how any points will be downloaded. By default, the download limit for a given surface is 10,000. However. users can make this value unlimited by using their own Google Elevations API Key, which is the defined in the Viewer Settings.

Accept The software will download the elevations for the area specified.

Cancel Exit the command without building a new Civil Site Design Surface.

Once the elevations have been downloaded, the Civil Site Design Create Surface form will display. The user then specifies whether to create a new Civil Site Design Surface or update an existing Civil Site Design Surface. If creating a new surface, the user will be required to specify the name of the new surface and the surface style.


Projection List (Recommended)	Prior to importing surface data, it is required that the user specify the coordinate system. Users have the option of either selecting one of the known built-in coordinate systems (via the Projection List) or specifiy a projection file. Projection files can be attained via the Spatial Reference website and should be used only if the coordinate system cannot be found in the projection list. If using the Projection List option, users will be required to first specify the category of the system and after doing so will populate a list of known coordinates systems. The Projection List is the recommended method for specifying the coordinate system, because it also contains details on how to transform coordinates systems from one to anotrher.
Category	Select the coordinate system category. For example, specify 'NationalGridsAustralia' to view known coordinates systems for Australia.
System	After selecting a category, all available coordinates systems will be listed in this drop-down box.
PRJ FIle	Prior to importing surface data, it is required that the user specify the coordinate system. Users have the option of either selecting one of the known built-in coordinate systems (via the Projection List) or specifiy a projection file. Projection files can be attained via the Spatial Reference website. On selecting the button with the 3 dots, the software will open the Model Viewer Projections Folder. If your coordinate system is not listed, then select the link to access the Spatial Reference website to search and download the .prj file for your required coordinate system.
Surface Colour	Specify the colour of the Civil Site Design Surface. This colour will be used when Model Viewer is display with a Shaded Visual Style.
Units	Sets whether the elevations downloaded are in metres or feet. Note: This setting does not affect the XY coordinates of the points.

Elevation Data	Allows the user to shift the elevations of the downloaded data

No Shift	The downloaded elevations are not shifted
Reference Surface	This option allows the user to shift the elevations by referencing an existing Civil Site Design Surface. The user is required to specify a surface and a coordinate (by selecting the picker button). The elevation taken from the existing surface is used to shift the elevations of the downloaded data. By using a Reference Surface, the software will also know where you are in the world and therefore when the satellite imagery will default to this location.
Specify Elevation	This option allows the user to specify either a negative or positive value to shift the downloaded elevations on to the correct datum.
Surface	If Reference Surface is specified, then the user will be required to select this surface from the list.
Elevation	If Elevation is specified, then the user is required to specify the negative or positive value for the elevation shift.
Style	Allows the user to specify a style for the label
Label Style	Specify the label style that is assigned to the label. Users can customise the style via the Label Styles command.
Leader Height	Set the height of the label leader. This height is measured from the level calculated from the surface elevation.
Elevation	Allows the user to specify the surface that is used to interpolate the elevation the label uses.
Surface	Select a surface from the drop-down list

Confirm Satellite Data	The Surface from Satellite window is displayed allowing users to define the area to generate the Civil Site Design Surface.
Cancel	Exit the command without building a new Civil Site Design Surface.


Map Providor	Specify the map providor you would like to reference. Options include Bing Maps, Google Maps, and NearMaps - NearMaps can only be used once credentials are specified in the Viewer Settings.
Search Field	The first step is to search for the area. In the search field (defaulting to the text 'Melbourne'), type in the address and select the ENTER key. If found, the software will pan to the location. By holding down the right-mouse button, users can pan around the view.

Define Area	Once zoomed to the location of choice, use the Define Area button to specify the area. Upon selecting the button, the user is first required to select the top-right corner of the area. On doing so, the software will shift the view to this location. Next, the user is required to select the bottom-right corner. Upon doing so, a red area is highlighted indicating the area to be downloaded.
Clear Area	This option allows the user to clear the currently defined area allowing the user to define a new area.
Grid Interval	This value is the intensity of the points downloaded. As this value is edited, the Point Count value will changed so the user is aware of how any points will be downloaded. By default, the download limit for a given surface is 10,000. However. users can make this value unlimited by using their own Google Elevations API Key, which is the defined in the Viewer Settings.

Accept	The software will download the elevations for the area specified.
Cancel	Exit the command without building a new Civil Site Design Surface.