Question

Determine which tif tags to be written to output tif

  • 30 October 2017
  • 2 replies
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Hello,

I am trying to generate a *.tif-File with certain tags. I found that setting the Photometric Interpretation parameter in the writer leads to the tag of the same name being set (eg. to "YCbCr") in the resulting file. However, I am looking for a FME way to set the XResolution, YResolution and ResolutionUnit tif tags so that they are included in the resulting tif file.

thank you,

Ludwig


2 replies

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Hi @ludhil,

My Workspace has a Source data tif with the original X and Y resolution with 0.5.

After my Source data i used the transformer RasterCellOriginSetter and setted the value:

XCell Origin: 1

YCell Origin:1

Thanks,

Danilo

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Hi, thank you for the tip. However, the information "Cell Origin" is present in the tif in the Inspector also without explicitly using RasterCellOriginSetter and it is not the tag I was looking for. Here is some background info: I do have an old workflow that prepares raster data for a 3rd party software and I want to replaace this old workflow / these old tools with FME. However, the resulting file has displaying errors in the 3rd party software, which is why I try to reproduce the result of the old workflow as closely as possible.

If I generate the file with the old tools, the resulting tif has the following attributes:

If I produce the file with fme, there are differences in the yellow marked areas, most importantly, the tags resolution unit, xresolution and yresolution are not set:

I have found them as format attributes in the writer but where do I get this information?

thanks and best regards,

Ludwig

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