Annual Glare Metrics
Last updated
Last updated
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Calculate Annual Glare Metrics from result (.dgp) files.
Glare Autonmy is a metric describing the percentage of occupied hours that each sensor is below the glare threshold.
Spatial Glare Autonomy is a metric describing the percentage of the sensor grid that is free glare according to the glare threshold and the target time. The sGA value is expressed as a percentage of the sensors in the analysis grid.
results [Required]
An list of annual Radiance result files from the "HB Imageless Annual Glare" component (containing the .dgp files and the sun-up-hours.txt). This can also be just the path to the folder containing these result files.
occ_sch
An annual occupancy schedule as a Ladybug Data Collection or a HB-Energy schedule object. This can also be the identifier of a schedule in your HB-Energy schedule library. Any value in this schedule that is 0.1 or above will be considered occupied. If None, a schedule from 9AM to 5PM on weekdays will be used.
glare_thresh
Threshold for glare autonomy (GA) in DGP (default: 0.4).
grid_filter
The name of a grid or a pattern to filter the grids. For instance, first_floor_* will simulate only the sensor grids that have an identifier that starts with first_floor_. By default all the grids will be processed.
target_time
A minimum threshold of occupied time (eg. 95% of the time), above which a given sensor passes and contributes to the spatial glare autonomy. (Default: 95%).
report
Reports, errors, warnings, etc.
GA
Glare autonomy results in percent. GA is the percentage of occupied hours that each sensor is free of glare according to the glare threshold. Each value is for a different sensor of the grid. These can be plugged into the "LB Spatial Heatmap" component along with meshes of the sensor grids to visualize results.
sGA
Spatial glare autonomy as a percentage of the sensors for each analysis grid that does not exceed the glare threshold for a specified fraction of occupied hours, ie. the target time.
pass_fail
A data tree of zeros and ones, which indicate whether a given sensor passes the criteria for being free of glare (1) or fails the criteria (0). Being free of glare does not necessarily mean that the sensor is glare-free for all hours, but that it is glare-free for a minimum percentage of occupied hours defined by the target time. Each value is for a different sensor of the grid. These can be plugged into the "LB Spatial Heatmap" component along with meshes of the sensor grids to visualize results.
