Transformers

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) = 4Could 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 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 10:33I 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;

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’. 

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

Not sure if it’s an issue as such, although I struggle to think of a scenario where you would want this functionality, and it might be obvious to some but just as an FYI If you send multipolygons into a Dissolver with Aggregate Handling set to Deaggregate and choose attributes to sum, the polygons will be deaggregated first, this means that each constituent part inherits the attributes of the original multipolygon feature and this will then be summed to leading to unexpected values. So from thisYou get this 

Hello,I have two tables with the same field names. Both tables have 2 date fields, with a start date and a end date and other fields which has the same name in both files. The only thing is that the date segmenst (time between start and end) has a overlap.Example:TABLE 1:DATUM_INGANG DATUM_EINDE ID REPLACER 19921101 20040119 0502010000027183 OWNER 20040119 20160930

I am processing a large amount of simple data: Points with attributes. I want to filter the data by a specific set of attributes, some of which have wild cards. e.g., "T", "T BASE", "T BENT" should all pass through. For each run, a user will be specifying the valid attributes by putting them into a file (probably text), which will be read in at the start of the process. I mention using a list, but they could go into a table as well if that would work better.

Hi, i am copying files using the FeatureWriter with FileCopy and but some of them are missing but i dont get an attribute telling me which files are missing. All i get is this in the log:File Copy Writer: Skipped 401 features that contained invalid source datasetsBut what i would like is to route those with invalid source data set and have them write to an excel ark or similar so i know which files cant be found.But right now the features all come out of the same port with no distinction of wheter or not the copy was actually succesful. Which is not very useful for me. Any help is very much appriciated :)

Hey guys, So I ran into a problem I shouldn't have. For my workspace I'm trying to subtract two integers from one another. The problem that I'm facing is that the arithmatic expression is not giving me any usable data. This is also the case when slightly change the expression. Below is the most recent attempt. Can anybody point out how I might be able to make this work?I have performed similar expressions in older versions of FME with no problems whatsoeverI I'm currently running FME 2024.2.4.0. The data type is originally Real64 but I converted it to Int32. Any help would appreciated. 

I have land parcels that are currently separate features in ArcGIS SDE.  Below highlights 2 parcels that that belong to the same property 1st and 2nd floors.  (2nd floor is the smaller shape)I want to aggregate these into a multi part single feature grouped by an ID that they share called LANDNO.After using the aggregator transformer, it looks like the below where the second floor has been totally cut out leaving nothing.  I haven’t tried a Disslove yet but I reckon that would remove all vectors of the second floor which I still want to keep.Here are the settings in Aggregator.   Any suggestions to achieve my objective ?

I’m building a value for the Longitude of a point feature. The field type I have defined is number (20,6) I create the value using this in the text editor:   @Format(%.5f,@XValue())So I want 5 decimal places.   eg.     15436225.30510However, what I see in my result table viewer is 15436225.3051   (no trailing zero)But when I double click on that value, it displays the value “with” the zero.  15436225.30510 The value that gets written to the writer (to AGOL) is the one without trailing zero.Works fine until I use a change detector, then it decides that the trailing zero is causing a difference and wants to update the value to have the trailing zero.So my question is,  can I enforce the trailing zero in the table re

I have been able to successfully connect to Asana by using two resources (attached at the bottom) and extract a list of task names and custom field names, but I have been unsuccessful in using the JSONFormatter, JSONFlattener, and the JSONExtractor tools to create a list of tasks and their corresponding custom field values for a specific Asana project. If anyone is experienced in working with the Asana API to collect this kind of data from a particular Asana project, I’d be really appreciative of any helpful tips to create a final output of a project’s tasks and their custom fields. Thank you so much!https://hub.safe.com/publishers/safe-sandbox/web-connections/asana)

HiI am doing a comparison of multiple AGOL feature services and am using a workspace runner to iterated through the feature services. I have created a published user parameter for the feature service name, which is populated by the workbench with the workspace runner. This appears to work fine but the problem is I cannot seem to make the layer name a parameter so it keeps reading the layer name from the feature service that the agol reader was set up with originally.Does anyone know a way round this please? Or perhaps it is resolved in a newer version of FME desktop (Im currently using 2023.1)?

Hello all,is it possible to use one AttributeRounder to round different attributes to different accuracies?Let’s assume i have two attributes, A and B. I want to round A to 2 decimal places, whereas i want to round B to three decimal places. Is this possible with one AttributeRounder or do I need to use the AttributeManager.Cheers!

 I have a parent WS that runs a load of WorkSpaceRunners. I want to pass on some User Parameters from the parent to the “kids”, see settings below. The child workspace is already setup with these User Parameters and run fine with them when run on their own. I have not been able to find any documentation on this, so the settings below are my best guesstimate. My steps are User Parameters in parent -› User Parameters in workspacerunner settings -› User Parameters set up in child workspace settings -› use them in child workspace.So, how do I fix this?Does the child WS need to be set up in a special way in order to pick up the incoming parameters? Is there a misstake in the syntax? Anything else I can look into?  

HiWe are migrating from one AGOL portal to another (with regional hosting). I have used the AGOL connector to list all service definitions of hosted feature services, download/upload the .sd files and publish the service on the new portal. This appears to have been successful.However, I am now trying to compare the feature services in each AGOL account and am struggling. I want to iterate through each feature service and compare it with the the one on the other account using the Change Detector. I have used the AGOL connector to list all the feature services and fed that into a feature reader. Unfortunately, all the features just come out the generic port without any schema so it seems impossible to compare the feature services. Does anyone know a way this could be done please?Also, I need it to finish with one feature service before it moves on to the next one. Is this possible?Many thanks 

Hi all. I am just trying to do something very basic but keep getting a “1019 error. The specified feature could not be updated or does not exist” when using the update feature writer.This only happens with polygons and lines/polylines but works fine with points.The workbench below is taking a polygon boundary dataset from portal, taking a polygon from AGOL putting it through a change detector - whose unique identifier is a name in both features- then updating/inserting/deleting when necessary to essentially make the AGOL layer the same as the portal layer….Or in theory this is what i want it to do. Any help would be much appreciated.  

When ‘Remove Output Attribute’ is selected for ‘If Input Attribute is Missing’  The missing attributes (the attributes with no data) are still present in the output.  Any clues?