Transformers

I’m working with getting raster imagery in the area of interest out from the WMS. It’s the Land Coverage WMS. (https://dmsdata.cr.usgs.gov/geoserver/mrlc_Land-Cover-Native_conus_year_data/wms?)End goal is to clip the Raster out from WMS into smaller area, and I need to be able to write attribute table showing the value number & RGB value in the Raster.End Product. (Smaller Raster with attribute table)​​​​​​The issue I’m having is that the Palette index seeing inside ArcPro and FME is different. (Approximate location, SE corner of Possom Kingdom Lake, Graford, Texas, USA.) (32.856463, -98.431004)Screenshot from ArcPro. When clicking Blue (Water) the value is 11. Screenshot from FME. When viewing the Palette after using RasterPaletteExtractor it showed Blue as 0. and I cannot figure out how to get the value “11” out of it. Also If anyone can help me figure out how to write the raster file out with attribute table that would be greatly appreciated. I’m quite new with Raster, so I’m no

Hi everyone,I have a very large dataset made up of numerous GeoTIFFs that I need to merge using FME’s RasterMosaicker. Unfortunately, the process stops due to memory issues, most likely because of the amount of data being processed.What’s the best way to get around this limitation and still perform the mosaic?

Hello,I've encountered an issue with how color attributes are read by the different IFC readers.The IFC reader (deprecated) reads a color value as the diffuse color, but the newer IFC_API reader reads the exact same value as the ambient color.Consequently, when using a writer like the CityGML writer, the diffuse color information is missing, which results in incorrect materials being created in the output file.Let me show you with a simple IFC example.When viewed with BIMVision: The color appears correctly as expected. When read with the IFC reader (deprecated):The geometry has the diffuse color, which is correct. When read with the IFC_API reader:The geometry has the ambient color instead of diffuse. What is the recommended way to handle this? Do I need to wait for the next version for a fix?As a temporary workaround, would it be possible to change the ambient color to diffuse color? This seems difficult because in my actual project files, the hierarchical position of the geometry par

How can I maintain the exact postgre data type of numeric , when write it back to database. The image below is the database datatype (numeric)  used used as a Reader but the above image is the writer output data type as numeric (1000,500) 

 I have workflow that pulls large groups shapefiles of different geometry types from a folder using a feature reader and then exports them to a geodatabase. I would like to export them into a feature dataset inside the geodatabase. I have tried including the dataset in the file path but that either gives me an error or results in a blank geodatabase. If I don’t try and put the data in the featuredataset and just put them in the geodatabase everything exports without any problems. How can I get the data into featuredatasets?Creating the path using an attribute manager.Putting the path in the Feature Class or Table Name parameter.

Hi,I am using the AutoCAD Reader to extract external references from DWG files. When I get to the same file in the directory in results in an “Error running translation” error. However, if I run the Reader against the individual file, it works fine. I have removed the file from the directory and it then errors later on a different file. I believe this could be a memory issue? How can I resolve?I am only running the Reader and no other Transformers.Any help would be appreciated.Thanks.

Hi all,I have two CSV files (A and B) that I've included using CSV readers, and I need to join them using a feature joiner on a specific column. CSV A contains numbers in all rows, whereas CSV B has numerous <Null> cells in the column. When I run the feature joiner it fails. I already tried:Changing both attribute types to number I included attribute managers before each CSV to include letters with the numbers of each CSV file to force matching as textDoes anyone have any suggestions? Many thanks.  

StringReplace does not do what I expect (version 2024.2.1.0)Newlines are not replaced, can someone please point out what I'm doing wrong?  

Hello everyone,I’m having trouble reprojecting a shapefile. The file is currently in SIRGAS 2000, and I need to convert it to WGS84. However, when I run the reprojection, an error occurs (see attached image).Additionally, I need to extract the current coordinate system of the shapefile. In the table, the field shows up as _FME_0, but it should display SIRGAS 2000.Does anyone know how to fix these two issues?

HelloIn one tester I enter a value through a published parameter. Then I have a second tester in which I would like to retrieve the previously entered value. How can I do this?Thanks

I want to filter all unique values of an attribute with the attributeFilter. Iam importing the values stright from the data source using the import Wizzard but it is failing to list all availabel values. It really caught me of guard.I checked the database for unique values marked “Correct” in the image vs the wrong output by AttributeFilter.I used DuplicateFilter to aslo check for unique values and it returned the same as my SQL Query. Am i using AttributeFilter wrong or is it not trustworthy?   

Hi all.We’re migrating email submittals to a http based service, which takes a JSON body in a POST request.One of the fields in the post body is “emailBody”, which can be text or html.So I’m attempting to use a JSONTemplater to build this, but it fails:JSONTemplater (XMLTemplaterFactory): All features receivedJSONTemplater (XMLTemplaterFactory): The following error occurred near line 7, column 50 of the query:JSONTemplater (XMLTemplaterFactory): invalid expression: syntax error, unexpected "QName", expecting "," or "}"An error has occurred. Check the logfile above for detailsTranslation FAILED with 1 error(s) and 4 warning(s) (0 feature(s) output)Line 7 in the ROOT expression is the HTML, with escaped apostrophes and removed linefeeds and whitespace between tags:{ "emailFromId": "planinfo@lifa.dk", "emailFromName": "planinfo@lifa.dk" ,"emailAddresses": [{fme:process-features("TO")}] ,"emailCcToId": "","emailCcToName": "" ,"emailBccToId": "","emailBccToName": "" ,"emailSubject": "T

I am using FME Form 2025 and the ChangeDetector to identify differences in records from two tables with the same schema. I have ChangedOutput create List(s) named “Changes”. What Transformer do I need to connect to the Inserted and Deleted Ports to get a look at the Lists? 

One of the greatest new features of the IFC4x3 schema is that we can write 2D lines to IFC, which was not supported in IFC2x3.Why does the new IFC writer support only 3D surfaces and solids and not 2D line geometries? 

Hi everyone,I'm working on a workflow that writes/updates features to an ArcSDE database using FME. The process completes successfully without any errors or crashes. However, I've noticed that for certain tables, the geometry (and possibly other data) is not actually updated in the ArcSDE database.I'm fairly new to ArcSDE and would appreciate any guidance on what might be causing this issue. Specifically, I’d like to understand: What table properties or configurations could prevent updates from being written, despite a successful translation? Are there permissions, versioning, or schema-locking issues I should be aware of? This is a non versioned table but the writer only works if I select versioned. Archiving is activated for the specific table. Is there a difference in how certain tables are registered with the geodatabase that could affect write operations? Any tips on how to investigate this further or best practices when working with ArcSDE and FME would be greatly appreciated

Hello everyone, I would really appreciate your support.I have a CSV file that contains a column named "LINK" (file attached), which includes the URLs to download orthophotos (.tif).I’d like to understand how to download them all using FME: How should the HTTPCaller transformer be properly configured? Is it necessary to create an attribute to assign a name to the orthophoto files? Could someone share an example script or workflow? Thank you very much for your help and support!

I want to transform a geotiff to an ecw while removing the nodata. The geotiff has just one band (band 0: Gray8). I do not have a clipper, so I think cannot use option 2 or 3 mentioned here, but only the first: use a rasterbandnodatasetter.So I used a rasterbandnodatasetter to set 0 as nodata, but when writing to the ECW this is not retained and still a black border is shown around the georeferenced image.What should I do to remove it definitely? 

About once or twice a year I have to dig out the SystemCaller, mostly just because I have to trigger a PowerShell command or script file. Without fail, I end up frustrated by the byzantine syntax (quotes galore) and limited way to capture output, finally succumbing to unnecessarily re-implementing the whole thing in Python.So my pick for the transformer that really needs some love and attention from the developers is the good-old SystemCaller :-)Do you also have a pet peeve Transformer that you think could be improved upon?

Hi, Just wondering: Is there a transformer that reads Esri *.pagx layout file? Greatly appreciate your help. Thanks, Willy 

I have a point dataset representing the locations of streetlights. I want to replace each point with a small line drawing that symbolizes a streetlight. This symbol is stored as a set of line geometries and can stay line geometry.I suspect I may not be using the correct approach, but here’s what I’ve tried so far:I used a GeometryExtractor to extract the line geometry of the symbol, and a GeometryReplacer to apply that geometry to each point. This almost works — however, instead of placing the symbol at the location of each point, the points are being moved to the location of the symbol. As a result, I end up with over 4000 symbols stacked on top of each other at the original symbol location.I’ve included an image of my workspace to illustrate the issue. 

I have a building footprint layer that I am using an oriented bounding box transformer (blue line) and trying to keep the result as close as possible to the original polygon (black line) but for some reason the bounding box is getting squeezed out of shape.  Does anyone have any suggestions as to why the bounding box is not aligning better?I am using it to try and automate the georeferencing of a CAD drawing and using the AffineWarper with lines that come from the corners of the bounding box. I am using the long side angle in the bounding box to rotate the CAD drawing, which in this example is still correct but the length of the long side is incorrect which puts out the affine points and scale calculation.  This is a case where the footprint is a basic rectangle but there are many cases where the footprint is an irregular shape.      

 I have an Excel spreadsheet that serves as a data dictionary. After reading a shapefile in FME Workbench, is it possible to use this spreadsheet to dynamically define the data type of each field in the shapefile?

Hello there, I really have a hard time to understand how to use the "Geometry Validator". I checked the "help" and still not sure how it works.  I checked an example in IMDF validator and not sure what is the column of "Issue to detect" does, such as "contains -0, NaN, or infinity".  I really hope someone can give me a light introduction on this transformer. Thank you and I am really appreciate your help.  

Hi! I'm new to FME and I have an issue with published parameters in a CustomTransformer.I created a CustomTransformer name "TeamsConnector" which need to use the published parameters "Message" in a pythoncaller:   Now in my main flow I use twice my custom transformer with different published parameters value. "Message 1" as a value for the first use of my transformer:    "Message 2" as a value for the second use of my transformer:  My issue is when I run the flow instead of having "Message 1" and "Message 2" as expected, I have twice "Message 1": 

Hi, It seems to me that there might be an issue when I'm trying to fetch a parameter value of a Custom Transformer, from a PythonCaller inside that Custom Transformer.  If I do so, I obtain an error. When I try to do so in the main workspace, or when I add the name of the CT in the parameterfetcher, I don't get an error, and it works. See below screenshot and the attached demo workspace for an example.This seems like a bug to me, but it would be nice if the community can have a look alongside me. Kind regards, Thijs Ps. as a sidenote, I came across this Community Question in which the best practice for accessing parameter values inside a PythonCaller is discussed. In it, it is mentioned that best practice is to use param = fme.macroValues[‘parameterName’] in favour of param = FME_MacroValues[‘parameterName’] Additionally, it is mentioned that DaveatSafe created a problem report 4 years ago to make sure that this best practice is also honoured in the script editor for the Python