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Why does the SHAPE_Area change values if I use an Excel-Writer compared with using a GDB-Writer?

dantheman_5
Contributor
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Hi everybody

 

I'm using FME to merge several different spatial feature classes to create a new one. The user of this product is one of our partners in the office who doesn't have the possibility to view the data with a GIS-system. Therefore the output should in form of an excel. At the end of the workspace I use two writer: one for the excel and one for the GDB. When I compare the two results regarding the total area of the features, only the GDB one is correct.

It is important that the area-values in the Excel are correct because they are used the analyze the other attribute using Pivot-tables and so on...

 

Thanks in advance for you help :-)

 

3 replies

redgeographics
Celebrity
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SHAPE_Area is an attribute that's automatically calculated by ESRI. For other formats it's "just an attribute" with "just a number". If you want to have an area field in Excel you should use an AreaCalculator before writing

tomfriedl
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  • tomfriedlContributor
  • Contributor
  • February 16, 2023

if you calculate the area (AreaCalculator) before you write to Excel, the result must identical.

shape_area is a systemattribute, it is not nessary for writing to GDB.

https://community.safe.com/general-10/fme-form-starter-20721
dantheman_5
Contributor
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  • dantheman_5Contributor
  • Author
  • Contributor
  • February 16, 2023

so cool, thx a lot guys for the quick answers, it worked perfekt :-)

The change from more ESRI products the FME needs some learning to do for me :-)

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