1.
Upcycle your workspaces
tips ‘n tricks for Custom Transformers

2.
FME
User
Conference
20
22
Lars de Vries
GIS and FME Consultant
• Owner Omkeere B.V.
• FME Certified Profesional
• FME Certified Trainer

3.
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FME
User
Conference
RECYCLE
LIKE THERE’S NO TOMORROW

4.
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FME
User
Conference
Preparing the ascent
● Choosing the right path
● Considerations
● Configuration
● Contemplation

5.
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FME
User
Conference
Custom Transformers?

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FME
User
Conference
Usefulness and necessity? My
contributions

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FME
User
Conference
The right path
• Custom Transformer
• User Parameter
• (Collapsed) bookmark
• Template workspace

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FME
User
Conference
1. Repetition
2. Serial Group-by processing
3. Looping
Three considerations

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FME
User
Conference
Repetition

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User
Conference
Repetition

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User
Conference
Group-by per transformer
Group-by with a
custom transformer

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User
Conference
Group-by
Only per transformer
Earlier
All in one
Now

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FME
User
Conference
Looping
● Control over
- Input ports
- Output ports
● Loop to input
● Works great with lists

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User
Conference
List looping
_values{0}.old [projectname]
_values{0}.new FME User Conference
_values{1}.old [errornumber]
_values{1}.new 3
_values{2}.old [topic]
_values{2}.new custom transformers
text: Our research for the project [projectname] shows that the
dataset has [errornumber] errors.
Despite these [errornumber] errors, we would like to continue our
demo about [topic].
_updated_text: Our research for the project FME User Conference shows that
the dataset has 3 errors.
Despite these 3 errors, we would like to continue our demo
about custom transformers.

15.
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FME
User
Conference
Creation of a Custom Transformer
Build from scratch
Convert an existing workflow

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FME
User
Conference
Re-usability
● Usable as any other transformer
● Within current workspace
● In other workspaces

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FME
User
Conference
Link or Embed?
• FME Server
• Maintainability

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FME
User
Conference
Sharing
Local
Organization

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FME
User
Conference
1. Temporary attributes
2. Avoid AttributeKeeper
3. (Naming) conventions
Parameters and Filters
To take into account

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FME
User
Conference
Adapt.

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FME
User
Conference
My favourites?

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FME
User
Conference
Custom Transformers
A power-up for your workspaces

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User
Conference
Useful resources
hub.safe.com

24.
Thank You!
larsdevries@omkeere.com

25.
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FME
User
Conference
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