Comparison of results

DL-Light makes it possible to compare the results of two calculations on a model. The comparison is made on the saved archives of the calculations (see Archiving results).
This feature allows you to analyze scenarios or variants for a model, for example changes according to the seasons or following the addition of an awning or blinds.

Comparisons and calculation parameters

The simplest method is to archive a first calculation, to vary a parameter, archive the new result, and compare the two archives. Most of the parameters of a calculation can be used to establish a comparison:

Several comparison reports can be displayed simultaneously.

Limitations and constraints

The mandatory constraints for the two archives to compare:


How to use the comparator

Selection of archives to compare

Open the "Comparator" dialog via the menu: Extension -> De Luminae -> Comparator

Select both archives:

DL-Light comparison scenario - comparison selection empty

By default, the proposed folder is the archive directory of the extension in use. Click on the path to select another folder if necessary.
If the two archives are not comparable (different palettes, different extensions...), an error message is displayed.

DL-Light daylight project archives load

A detailed description of the calculation is displayed for each archive.

DL-Light comparison scenario - comparison selection mac
DL-Light comparison scenario - comparison selection win

When both archives are selected, click on the button Compare :

The calculation of the comparison can take from a few seconds (MacOS) to a few tens of seconds (Windows). The longest step is the loading of the archives (a cache mechanism reduces the time of loading in the case of successive comparisons).

The comparison report

The comparison is displayed in a special report comparing the results of archive "A" and archive "B" for each calculated surface in both archives and for each interval of the palette.

For each interval, the columns are:

These columns can be displayed / hidden. The rows of the report can be deleted or sorted by clicking on the header of the sorting column.
The report can be exported in CSV format.
Clicking on a line of the report selects the corresponding surface on the model, the yellow icon "Highlight" allows to activate / deactivate the highlighting of the selected area.