Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
OK this is like four questions. I can answer one straight off, so I'm going for it.
What are the acceptable file types for picture.cal?
picture.cal requires a Radiance HDR image as input. You can convert LDR image formats to Radiance with the utilities included in the Radiance distribution, such as ra_tiff. The trick is to use the -r option, to go in "reverse". e.g., you have an image your_image.tif that you want to use with picture.cal, so you convert it from tif to hdr like so:
ra_tiff -r your_image.tif your_image.hdr
Now you reference your_image.hdr in your material definition that uses picture.cal, etc.
