IES file distribution curve flip 180 degrees and rotate 90 degrees
Take lawn lights as an example:
During the test, the lamp cannot be installed upward and can only be fixed downward. Therefore, the light distribution is upward during the test, but actually the light distribution is downward. In this case, the test data needs to be flipped 180 degrees.
The original data are as follows:
The data of 180 degree flip is as follows:
Take street lamps for example:
When there is a 90 degree difference between the national standard and the North American standard, it is necessary to rotate the data by 90 degrees