====== Script ======
The Script uses [[https://www.lua.org/manual/5.1/index.html#index|Lua 5.1]] in order to read or modify header values of images. CCC values of a stack of images can be read by the Script and used as weighting factors in a different logic. 

===== Usage =====
The Script needs to be combined with the element [[eyes:logics:variable|]]. 

At first a Variable is set up with the certain data type. In order to access a single image in a cow workflow the script needs to call the cow.io[#number of the image in the IO]. Then to read a header value of that image the script needs to be expanded by the name of the header in quotation marks ["image header values name"].


**cow.VariableName = cow.io[#number of the image in the IO]["image header values name"]** 
===== Example ====
{{ :eyes:logics:scriptcall.png |}}
{{ :eyes:logics:script.png |}}
===== Parameters and I/O =====

|< 100% 30% >|
^ Input   ^ Description ^
| FirstInput  | Input to be modified by the script |


|< 100% 30% >|
^ Output   ^ Description ^
| FirstOutput | Output|

===== Concept =====
The Script elements works with[[https://www.lua.org/manual/5.1/index.html#index|Lua 5.1 Reference Manual]].
In the following link all [[https://www.lua.org/manual/5.1/index.html#index|Lua functions]] are listed at the end of the page.