Skyline Barrier and Graph, Sun Shadow Volume Tools
Skyline Barrier
How to use Skyline Barrier Tool in ArcToolbox ArcMap ArcGIS ??
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| Skyline Barrier Tool |
Skyline Barrier Tool, Visibility Toolset, 3D Analyst Toolbox
Skyline Barrier
Generates a multipatch
feature class representing a skyline barrier or shadow volume.
1. Input Observer Point Features
The point feature class
containing the observer points.
2. Input Features
The input line feature
class which represents the skylines, or the input multipatch feature class
which represents the silhouettes.
3. Output Feature Class
The output feature class
into which the skyline barrier or shadow volume is placed.
4. Minimum Radius (optional)
The minimum radius to
which triangle edges should be extended from the observer point. The default is
0, meaning no minimum.
5. Maximum Radius (optional)
The maximum radius to
which triangle edges should be extended from the observer point. The default is
0, meaning no maximum.
6. Closed (optional)
Whether to close the
skyline barrier with a skirt and a base so that the resulting multipatch will
appear to be a solid.
·
Unchecked—No skirt or base is added to the multipatch; just the
multipatch representing the surface going from the observer to the skyline is
represented. This is the default.
·
Checked— A skirt and a base are added to the multipatch so as to
form what appears to be a closed solid.
7. Base Elevation (optional)
The elevation of the base of the closed multipatch; it is ignored if the barrier is not to be closed. The default is 0.
8. Project to Plane (optional)
Whether the front
(nearer to the observer) and back (farther from the observer) ends of the
barrier should each be projected onto a vertical plane. This is typically
checked (turned on) in order to create a shadow volume.
·
Unchecked—The barrier will extend from the observer point to the
skyline (or nearer or farther if nonzero values are provided for minimum and
maximum radius). This is the default.
·
Checked—The barrier will extend from a vertical plane to a
vertical plane.
Skyline Graph
How to use Skyline Graph Tool in ArcToolbox ArcMap ArcGIS ??
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| Skyline Graph Tool |
Skyline Graph Tool, Visibility Toolset, 3D Analyst Toolbox
Skyline Graph
Calculates sky
visibility and generates an optional table and polar graph.
The table and graph
represent the horizontal and vertical angles going from the observer point to
each of the vertices on the skyline.
1. Input Observer Point Features
The input features
containing one or more observer points.
2. Input Line Features
The line features that
represent the skyline.
3. Base Visibility Angle (optional)
The baseline vertical
angle that is used for calculating the percentage of visible sky. 0 is the
horizon, 90 is straight up; -90 is straight down. The default is 0.
4. Additional Fields (optional)
Indicates whether
additional fields will be added to the angles table.
·
Unchecked—Additional fields will not be added. This is the
default.
·
Checked—Additional fields will be added.
5. Output Angles Table (optional)
The table to be created for outputting the angles.
6. Output Graph Name (optional)
Specifying a name will create a polar graph of
the skyline delineation of the first observer. The graph represents the
potential sky that can be seen from the position of the observer, and has its
origin defined by the observer.
A table has to be generated in order for the
graph to be made, and the graph will only display if the tool is executed in
ArcMap, ArcGlobe, or ArcScene.
Sun Shadow Volume
How to use Sun Shadow Volume Tool in ArcToolbox ArcMap ArcGIS ??
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| Sun Shadow Volume |
Sun Shadow Volume Tool, Visibility Toolset, 3D Analyst Toolbox
Sun Shadow Volume
Creates closed volumes that model shadows cast by each feature using sunlight for a given date and time.
1. Input Features
The multipatch features
that will be used to model shadows. Polygon and line features can also be used
if they are added as an extruded 3D layer.
2. Start Date and Time
The date and time that
the trajectory of sunlight will be calculated for modeling the shadows.
3. Output Feature Class
The multipatch feature
class that will store the resulting shadow volumes.
4. Adjusted for Daylight Savings Time (optional)
Specifies if time value
is adjusted for Daylight Savings Time (DST).
·
Unchecked—DST is not observed. This is the default.
·
Checked—DST is observed.
5. Time Zone (optional)
The time zone in which the participating input is located. The default setting is the time zone to which the operating system is set.
6. End Date and Time (optional)
The final date and time for calculating sun position. If only a date is provided, the final time is presumed to be sunset.
7. Iteration Interval (optional)
The value used to define the iteration of time from the start date.
8. Iteration Unit (optional)
The unit that defines
the iteration value applied to the Start Date and Time.
·
DAYS—Iteration value will represent days. This is the default.
·
HOURS—Iteration value will represent one or more hours.
· MINUTES—Iteration value will represent one or more minutes.
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