Transformers

Hello! Is there a way to change the displayed date in a datetime userparameter as DD-MM-YYYY? The chooser interface is helpful to check if it is the right date, but it can still be quite confusing, especially in Flow, when not every user knows about the picker and just enters the date. Is there an option I am missing or is a text-field instead my only alternative? Many thanks in advance!

Hi, I have a dynamic workspace where I am reading in multiple csv update files for multiple feature types to upsert into our database. I had set the primary key dynamically dependent on the target table in the database. I cannot set a where clause on an UPSERT (which I do use with other feature types that have the ability to do I, U, or D) so went to use the "Row Selection: Columns:" section instead. This parameter does not work in the normal way with attributes. It presumes the selected attribute is the primary key field (no orange left arrow in front of the name), rather than using the value. I tried manually adding @Value(primary_key) (the attribute that stores the primary key column name) in the parameter but the feature writer also presumes it is literal and obviously can't find a column called "@Value(primary_key)" and errors. This is something that I would like to do, and is very much a part of a dynamic workflow. Otherwise I will have to create one dynamic feature writer for ea

Hi everyone! Today I’d like to share a new approach to building reports in FME, along with an entire family of custom transformers I’ve created to support it. Why I built BRG I’m a long-time fan of the HTMLReportGenerator. It lets me craft reports quickly, and I love the versatility of HTML compared with, say, PDF. I even demo it in every Intro to FME course as a great example of “let FME handle the code.” But as much as I love it, I’ve always hit three pain points: 1. Plain styling – it could really use a dash of CSS/Bootstrap.2. Hard-coded content types – adding a new chart or HTML element isn’t trivial.3. Cumbersome feature ordering – managing Sorters and AttributeCreators just to control layout can get messy. Earlier this year I had to build a highly procedural report with lots of HTMLLayouters, AttributeCreators, and Sorters, and the workspace quickly turned into spaghetti. That’s when I thought: I already improved SystemCaller with BetterSystemCaller … why not do the same for rep

Hello FME’ers, I am currently comparing FME and PostgreSQL/PostGIS when transforming some line geometry. In each scenario I need to round the coordinates to 3 decimal places. This has thrown up a anomaly when rounding coordinates ending .4999. For example, the coordinate 104269.57149999999 will be rounded to 104269.571 by ST_ReducePrecision but 104269.572 by the FME CoordinateRounder. I believe this is due to different rounding techniques like round-to-even or half-round-up. Can anyone explain this behaviour? Is there any “right” answer? Thank you, David

I’m stringing together a bunch of HTTPCallers, each of which has several query string parameters. From what I can see, you are only able to see two parameters at a time in an HTTPCaller transformer (see screenshot). Is there a way to enlarge/expand the dialog box so I can see all or most of them at once? Should be easy; I feel like I’m missing something. It would be so much easier, helpful, and efficient so see all query string parameters at a glance. (FME Desktop 2023.2.0.0, Build 20231201).

Hello, I want to report a bug related to adding attachments to a feature in an ArcGIS Enterprise Feature Service using the ArcGISAttachmentConnector in the latest version. I receive the following error: (C:\Users\x\AppData\Roaming\Safe Software\FME\Packages\25606-win64\python\safe.esri-agol\fmepy_esri_agol\attachments\handler.py:104) add_attachment return AttachmentResult.from_dict(response.get("addAttachmentResult", {})) ^^^^^^^^^^^^910523 Python Exception <AttributeError>: 'generator' object has no attribute 'get' The problem is that the ArcGIS REST API addAttachment endpoint returns text/html instead of json. This appears to happen specifically for Enterprise Feature Services, as described here. As a result, the result cannot be decoded. However, the attachment is actually uploaded successfully. Bug fix: Change the line 43 from files = {"attachment": (filename, file_obj, mime_type))} to files = {"attachment": (filename, file_obj, mime_type), "f": (None, "json")} in C:\Users\x\AppDat

I have a workflow where I am creating a raster using SurfaceModeler. As documented, this transformer may output some NaN values when using PLANAR interpolation. I indeed have a few cells that come out with a NaN value. I am not certain what transformer can change my NaN values to NoData values (or any other values)? I read through this article: http://blog.safe.com/2013/11/fmeevangelist119/ and thought the NullAttributeMapper would be the answer, but it does not seem so.

Upgraded from FME Desktop 2022.2 to FME Desktop 2025.1 (Build 25609) In FME 2022.2, I had a FeatureReader reading to a FeatureService URL with no issues. Perfectly was able to read it and extract its spatial content and attributes. Upgraded to FME Desktop 2025.1 and it no longer works. Could this be like an internal firewall blocking access to this or is it the way FME 2025 handles SSL certificates? If so, how can I remedy this? Any insight is much appreciated. SAMPLE Workbench I have the latest package installed Error message: ArcGIS Feature Service Reader: Could not connect to server. Check that you are connected to the internet and that no firewall is blocking outbound connections. The error was 'HTTPSConnectionPool(host='services.arcgis.com', port=443): Max retries exceeded with url: /mMUesHYPkXjaFGfS/arcgis/rest/services/ROLL_ENTRY/FeatureServer?f=json (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: Basic Constraints of

Morning All, Has anyone else identified an issue with all SQL transformers when specifying the connection via either deployment parameter or database connection? When run on Form it operates correctly but when run via Flow (either scheduled or manually submitted) the following error is returned: Error occurred while opening database reader with server type `MSSQL_ADO', server name `XXXXX', user name `', database name = `' : `Encryption Error: AES Decrypt finalization failed.' If the database connection is embedded into the transformers Flow is able to operate these transformers correctly, however this would then require each transformer to be reconfigured as we migrate between environments. Thanks in advance, Paul.

Hey everyone, I hope I am just missing a very obvious point here. I am trying to compare two SQL input data sources One with these columns And the other with these columns The customer and account number combination is going to be my primary key. I need to extract the email addresses of customers based on that combination. I have tried the feature merger which seemed to be the obvious solution, but I am not getting any matches? Any idea where I am going wrong?

I have found that the feature reader will not accept point data as the initiator. I have since found that in Version 15 a change was made: - Spatial operations will reject initiator features with point geometries to match native reader behaviour. Does anyone know why this was changed and if there is a way to force it to accept points without having to create a very small buffer to it and then recreate the point after the feature reader.

Good afternoon, I am extremely new to FME so apologies in advance if my question comes across as exceedingly simple or unnecessary. Anyways, I am attempting to convert a set of line features that originated in AutoCAD into a GIS formatted polygon layer. To start, I cleaned the layer as best as I could and performed snapping within QGIS. I then have tried using AreaBuilder in combination with other transformers such as LineCloser to obtain a set of polygons, but the output so far has been less than ideal. I have also experimented with Snapper and some other transformers such as LineExtender but those have introduced new errors that then lead to no output from AreaBuilder. Below I have attached an image of my workspace currently, as well as an image of the current output I am receiving. I will also attach a sample of the dataset I am working from! My conclusions are that LineCloser is causing the issue which leads to these slivers and polygons outside of the scope of the data, however I

Hi, I’m trying to put an URL in a table using the new DocumentPDFStyler and I can’t make it work. One of my issue is that the URL breaks because it doesn’t fit in the table box, also it doesn’t show up as an url. I tested many things to make it work: Image Link, add the pdf_url attribute (doesn’t work because this is the documentpdf writer), put quotes around it. I’m trying to make this work without having to use the wkhtmltopdf 😅

Hello, Please see picture above, DateTimeNow is my value i am feeding into DateTime attribute, which matches the preview data format, but the output keeps getting rejected saying the errors above. I’m a bit stumped to as why this is not working. Any ideas? Thanks.

Hi All, I often encounter difficulties when attempting to select specific raster values using FME. I am currently working with a raster dataset that contains two bands, and I need to isolate the following values: Band 0 (GRAY8) = 3 Band 0 (GRAY8) = 4 Could you please advise on the appropriate expression to use within the RasterExpressionEvaluator to achieve this selection? Thanks :)

Hello, I think my question has been asked before but I can't find anything on Google. Input Data : One table wothout geometry with : Id Id route measure One table with linestring geometry and : Id Id route (the same) geometry I want to position my point data with the measure field along the line and generate a new Point Geometry

The feature reader does not allow you to make a clip on the initiator geometry. I need to read a fairly large raster (13GB). Input I get some small zone geometries to analyze. The idea was to create a BBOX on the geometry and use the feature "Spatial filter: intersects or bbox intersects" to load only the part of the raster needed for the analysis. Even configuring intersects or bbox on the feature reader, in output there is always and anyway all the raster. This problem is great because it slows me down considerably the server side script. If you add a raster reader instead you can check the "Clip on search envelope" flag and it works. But without FeatureReader i can't give my search envelope by the initiator. Could this be a missing-feature? Does anyone have a workaround? I use the FME Desktop version 2019.1

When running an old script in FME 2024.1.1.0 we get 58 errors “The object at location ___ was previously deleted and cannot be retrieved from the Object Stash” (see attached log file). It doesn’t appear to affect the output, the log file says “Translation was SUCCESSFUL” and CPU and Memory usage don’t get close to 100%. Can we ignore these errors? This is part of a much larger script but only this part is producing the errors. We updated the transformers and saved the script to FME 2024 but still get the errors at the transformer FeatureJoiner_13. The only way to not get the errors is to run the script up to the 2 preceding transformers (“Run to this”) and then run FeatureJoiner_13. The output appears to be the same as when we were getting the errors. We tried adding in FeatureHolders before FeatureJoiner_13 but still got the errors. Bye Doug

When a database is updated using SpatialRelator, FeatureTypeFilter, and DatabaseUpdater Transformers from feature classes inherited from two different readers, the _relationship attribute disappears when the FeatureTypeFilter Update button is used. All DatabaseUpdater transformers are in the "incomplete transformer" status. When examining the DatabaseUpdater transformers, the _relationship values are red. Copying and pasting the same value fixes this. To avoid this issue, you must manually edit the FeatureTypeFilter, which is time-consuming.

I’m using the rasterdemgenerator and I can’t get the fme_basename passed it. I have some lidar tiles and I want to make a DTM from them. I can do everything, but I cant get the DTM named like the input las file. It has either no name or it has the name of the transformer. There is an old forum post where Takashi tell’s someone to expose the FME_feauture_type, fill it with the FME_basename, use a group by (using the FME_feauture_type) in the rasterdemgenerator and than use it as the raster file name. It doesn’t work for me… Any other suggestions? I’m on FME 2025.0

Hello Safers, I have a CAD file that has annotations inserted within it that should be one annotation but, for whatever reason, they were created as separate annotations: Above is an example of what I am struggling with. The text should simply read 10.88, but FME reads it as 1, and 0, decimal , 8, 8, and 0. What I would like to do is treat this as one annotation, and be able to round or eliminate extra numbers where needed (i.e. I only need two decimal precision, not three). Please note I already figured out the precision and rounding….I just need help with these multi-part annotations. How would I go about doing this in FME? Thanks!

Hi All, I have tried to implement several suggestions from the community regarding date filtering; however, I have not been successful so far. I am trying to filter dates in a CSV file based on the "last login" within the past three months. The date format in the file is as follows: 18/07/2025 09:16 08/07/2025 12:46 01/02/2024 10:07 16/01/2025 10:33 I have converted those dates to %Y%m%d resulting ‘20230403’ then add an AttributeManager to change the ‘last_loging’ attribute to ‘date’ and finally used the following expression to filter the "last login" within the past three months: @Evaluate(@DateTimeFormat(@DateTimeSubtract(@DateTimeNow(), '3', 'months'), '%Y%m%d')) ...but for some reason doesn’t work, Any guidance or support would be greatly appreciated.

When I create a Custom Transformer in FME, and (manually) create parameters within that custom transformer, it seems that I can't assign an attribute value for these parameters from outside of the custom transformer. So for example, I created 3 distinct parameters (text, number and (single) choide) inside of a custom transformer, all of them with the setting 'Disable Attribute Assignment' unchecked. then outside of the custom transformer I don't get an option to provide an attribute value for each of these parameters; Interestingly, if I expose attributes at the input port of the custom transformer, like so; then a text parameter is automatically created (in this case 'ATTR1'), whose value can be set outside of the custom transformer: It seems like a bit of a bug to me. I'm using FME 2021.2.2.0 (b21806 - win64). I found some ways to work around this, like in case of the text parameter, you can open the Text Editor window, and manually type @Value(attr1) (also in the Text Editor window,

I’m trying to read a text file with settings in it then, use the settings in the WS. The settings are formatted on lines like name = value. There are lines with other stuff on them like comments that I just want to ignore. The WS that I have seems to work up to the AttributeSplitter. I think it splits right because it shows 30 features created but it doesn’t fully fill the list{}. I think the list{} should have 60 items but it only has 2. The AttributeCreator just creates one attribute for the list{2}. I’m a bit confused how this should be configured. Also, if there is a better way of doing this (reading settings) then, please let me know. I have attached my WS (zipped) and my txt settings file. AttributeCreator: only one attribute gets created ‘APP_EXIT’. AttributeCreator

I’m working through a data cleaning process in a workspace. I have multiple files that are different from each other in schema and attributes, but are essentially all saying similar things. Hence the cleaning. I’m working in one workspace to make re-use of transformers a little easier, but when I’m using the FirenameParkExtractor transformer I need to identify a user parameter source for it to gather up a name to chop up. This is what that dropdown looks like: The names here do not align with how I’ve named the readers and associated files so I’m a little confused about how to make this situation easier to work with. I’d like to be able to rename the source datasets, but I’m not sure where I’d do that. Can you tell me? As an aside, is it a bad idea to process many things in one workspace? Should each file get it’s own? Is there some helpful documentation out there about designing workflows? (I’ll be searching on that just now, but I thought of the question as I was writing the post!) H