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Output based on current and previous input values [message #776473]

Sun, 08 January 2012 14:06

André van Schoubroeck

Messages: 1
Registered: January 2012

Junior Member

What I have now is a simple transformation where one object in the source corresponds with one object in the destination, and this is rather straight forwards.

However, I wish to keep a memory of the previous input, as I wish to convert an absolute input to a relative output. I have been googling around the website but I haven't found any clue how to do this yet.

I will write a small example to clarify the meaning of my question

Simplified example input

<object value="5"/>
<object value="6"/>
<object value="8"/>
<object value="16"/>

Simplified example output

<difference value ="5"/>
<difference value ="1"/>
<difference value ="2"/>
<difference value ="8"/>

So... I wish to use the current and the previous object (input) to calculate the difference (output)

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Re: Output based on current and previous input values [message #776514 is a reply to message #776473]

Sun, 08 January 2012 16:43

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

Use a two input transformation, one new, one old.

Regards

Ed Willink

On 08/01/2012 14:06, André van Schoubroeck wrote:
> What I have now is a simple transformation where one object in the
> source corresponds with one object in the destination, and this is
> rather straight forwards.
>
> However, I wish to keep a memory of the previous input, as I wish to
> convert an absolute input to a relative output. I have been googling
> around the website but I haven't found any clue how to do this yet.
>
>
> I will write a small example to clarify the meaning of my question
>
> Simplified example input
>
> <object value="5"/>
> <object value="6"/>
> <object value="8"/>
> <object value="16"/>
>
>
> Simplified example output
>
> <difference value ="5"/>
> <difference value ="1"/>
> <difference value ="2"/>
> <difference value ="8"/>
>
>
> So... I wish to use the current and the previous object (input) to
> calculate the difference (output)
>
>

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