Hi all
I want to Check the presence of one or more layers (which I already know the names) and in each of the layers verifies the existence of one or more attributes (already known) when reading the data source.
Thank for advance
Question
Check the presence of layer and attribute in the DWG file
You can for example use a Tester for the known layer name based on fme_feature_type, followed by a NoFeaturesTester (from the FME Hub) to get a trigger if it doesn't exist.
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david_r wrote:
You can for example use a Tester for the known layer name based on fme_feature_type, followed by a NoFeaturesTester (from the FME Hub) to get a trigger if it doesn't exist.
mgeomaticien wrote:
Thank you david. I've installed the "NoFeaturesTester", but I don't know how it work. It does not offer configuration options.
https://hub.safe.com/transformers/nofeaturestester
Not sure you need it though, it depends on what you want to achieve.
- Participant
david_r wrote:
Have a look at the description, it's fairly straight-forward:
https://hub.safe.com/transformers/nofeaturestester
Not sure you need it though, it depends on what you want to achieve.
This pattern will read a DWG and check for a layer called "Sector", notably
- That the layer "Sector" has at least one feature
- That every feature in the "Sector" layer has an attribute called "LabelString"
When creating the reader, make sure to create it as a merged feature type and to expose the format attribute "fme_feature_type":
1 person upvoted this
mgeomaticien wrote:
Thank you david. I do not see the patern. The image is not visible
It will open this file: https://i.imgur.com/g4BafRL.png
- Participant
Thank you david. The image is visible. I will test it and I inform you of the result
- Participant
Thanks david. I hope you had a good weekend.
The workbench works with the test of a single layer. But when I specify the name of two layers in the tester field, it doesn't work
mgeomaticien wrote:
Thanks david. I hope you had a good weekend.
The workbench works with the test of a single layer. But when I specify the name of two layers in the tester field, it doesn't work
- Participant
So I will try to be more precise:
I have a DWG file from a designer. This file contains several layers. My workbench must check that among these layers are the layers: tree_layer, building_layer, and root_layer. Then it must also verify that tree_layer contains the attributes: name, type, size. And that the building_layer contains the attributes: name, type, surface. If one of the layers or attributes I have specified does not exist then my workbench writes the errors to another layer. I hope it's clearer nowmgeomaticien wrote:
So I will try to be more precise:
I have a DWG file from a designer. This file contains several layers. My workbench must check that among these layers are the layers: tree_layer, building_layer, and root_layer. Then it must also verify that tree_layer contains the attributes: name, type, size. And that the building_layer contains the attributes: name, type, surface. If one of the layers or attributes I have specified does not exist then my workbench writes the errors to another layer. I hope it's clearer now
mgeomaticien wrote:
Here's how I configured to search for my two layers
- Participant
Yes indeed. That's why I'm looking for a transformer that will allow me to enter several layer names I'm looking for
mgeomaticien wrote:
Yes indeed. That's why I'm looking for a transformer that will allow me to enter several layer names I'm looking for
- Participant
david_r wrote:
Maybe the TestFilter can help you out. Make an output port for each of your required layers and re-direct each to their own NoFeaturesTester etc. There is no single transformer to do exactly what you need, you'll have to "program" the logic using the existing transformers.
- Participant
Yes exactly, I have to put together several transform to do it. But since last week I don't come up with a very good solution
+15- Contributor
read the fme_data_set (dwg name) and group the fme_feature_types (layers in the dwg) and or the attributes.
Use a listbuilder or aggregator for that.
Search the list for the items you require.
(you may want to test of the features contain objects maybe too.)
An autocad layer does not require it to have objects. (a no feature feature_type can exist)
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