Calculation Viewer - Calc Points

The Calculation Points menu controls the various options available for the display of calculation points within the rendered image. The viewer settings have no impact on the numeric values as displayed in the Revit views using the View/Update Results command.


Option Illustrated Explained
Show Calculation Points

Calculation points shown - illuminance metric


The display of calculation points is on by default. Toggle the Show Calculation Points checkbox to turn them off.


The Illuminance Metric is shown by default. Select an alternative if desired.


All calculation point grids placed in ElumTools that are "Enabled" in the calculation volume, or selected using the "selected elements" option, will be displayed in the viewer.

Show Meter Indicators

Meter indicators shown in orange


The meter indicators show the direction the photocell is pointing at each calculation point. In the case of horizontal illuminance, the meter indicator points up. In the case of vertical illuminance on a wall, the meter indicator will point into the Room/Space if the calculation points (Planar Face) family has been properly placed.
Show Mark Points

Point markers shown (circled example)

The calculation point marker is enabled by default. The small plus sign (+) marks the exact location of the calculation point.
Show Metric

Show metrics on the rendered view

The selected metric can be shown on the visualization. This will indicate the metric selected for Calculation Points as well as that of the rendered image (from the toolbar)
Precision Mode

Fixed Decimals setting with Display Precision of 2

The Precision Mode controls the decimal precision of the illuminance values displayed. The default response is Automatic. If you change the mode, you may find it necessary to reduce the text size to avoid text overlap. This is done in the "Text Size Factor" setting.


  • Automatic – Displays an appropriate level of precision for a wide range of values.
  • Fixed Decimals – Displays a certain number of decimal places regardless of how big or small the number is. The number of decimal places is controlled by the "Display Precision" and can be 0 to 4.
  • Significant Figures - Displays values according to the rules of significant figures.


For complete details see the Precision Mode table of values


Display Precision

Increasing or decreasing the display precision affects all precision modes. Range is 0 to 4.


A more distinctive font can be nice


The default font for display of calculation points in the ElumTools viewer is Courier New. You can change the font as desired, drawing from any of the font families available on your system.
Font Color

Make your points really stand out!


The font color is black by default. You may find it useful to make it brighter for presentation purposes.
Text Size Factor



The calculation point text is optimized based on the spacing between points and for the "Automatic" Precision Mode. If you change precision mode, you may find it necessary to adjust the font size. Reducing the Size Factor (<1) will make it smaller, increasing the Size Factor (>1) will make the values larger.



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