Comparison between programs Representation and Calculation of artificial lighting

There are several more or less well-known freeware lighting calculation and allow easy access to their tutorials , written or audiovisual form , but we have a comparison between them for guidance on what is most appropriate to meet the needs of our project. This paper analyzes three of the most used in the School of Architecture of Barcelona programs , assessing their performance and aspects of the data provided , in order to know their qualities and recommend its use to the needs of every lighting project . The programs analyzed in this study are Calculux Indoor 5.0 , 4.11 and Dialux Relux Pro Comparative analysis was performed based on the design of two spaces with each of the above programs , assessing from the geometrical data input to output both numeric and graphics . lighting data