Transformers

For a project with an old projection I am trying to create multiple equal sized polygons within a bigger polygon. This is of importance because the historic projection uses intersections of distances to locate objects. So what I am trying to do is creating the polygons of equal distances into a larger polygon.  I currently use the 2D Grid accumulator for this. However, this makes use of an hull around the polygon I've created. Therefore, some of the created polygons are outside of the project area.  So, when looking at the image I would like to have 100 polygons of equal size in both directions tilted with the project area (Red line) and all within the project area. Let me know if anything is still unclear. Thanks in advance!

Hi!Using FME Desktop 20202.0, I cannot explain to myself why GeometryValidator transformer can miss a geo-issue when using ShapeFile format while can catch it for the same dataset in FileGDB format. Attaching screenshot. Any ideas?Thanks,Juanma,

FME Desktop 2022: How to specify the type of created attribute field (chr, double, integer, etc.)? I couldn’t figure out how to specify the type of the attribute field In the screenshot below, I created the “AreaPercent” attribute but couldn’t figure out how to specify its type. However, as it’s written in a feature class geodatabase, it’s considered as “chr”. How this can be managed?         

FME Desktop 2022: How two columns of points are transferred as two fields in the attribute table of polygon layer? As per the screenshot (and the attached data): 1)    I have a data that is generated in point layer and polygon layer2)    Each feature of the point layer lies next to a feature from the polygon layer Now, how the two columns of the point layer are transferred as two fields in the attribute table of the polygon layer?        

FME Desktop 2022: How to add comma separator (thousands separator) and specify the number of decimal places? I couldn’t figure out how to add comma separator (thousands separator) and specify the number of decimal places as they appear in the table      

transformers

Is there a transformer to read the unique values contained within an attribute and then assign a new value? Similar to the way that the attribute manager works but for values. For example I have a dataset with the columns fruits: Fruits New Value-------- ----------------Apple > Green AppleBananaOrange > Blond OrangeKiwi > Golden Kiwi  Ideally the transformer would read the unique values listed in the Fruits attribute and then I could specify the new value for the output.  As I am working with large datasets, I do not want to have to create a mapping rule for every value individually. Ideally the values would be automatically clustered and would be presented in a table and I could then just specify the newly mapped value.

How would I go about spitting a column every 12th row so I have three features from column a instead of one

Hello everyone, I have this very large raster and a shapefile with polygons. My process is a looping one where the raster is clipped with each polygon. In order to avoid reading the whole raster everytime, I've created a subprocess that uses the polygon bounds directly in the search envelop of reader. Then, it is clipped.My problem arise when the polygon used for clipping is outside the raster extent. The "inside" port of the transformer is empty but the process continues. This output is supposed to be used later on in a script (arcpy custom transformer) to align many other rasters. But clearly all this fails because there is no raster.  The best solution I have come up with would be to add a Tester or something after the transformer and create a bolean value which would allow me to deal with this empty raster directly in the script. However, I can't seem to find a way to do that. Mind me, I cannot use the "outside" port since I always have an extra part to

Hello,After using the CenterLineReplacer transformer on a ploygon I get the following result. Is it possible to extend the line that was created before so that it reaches the edge of the polygon?  Thanks for your help

I have a 3D building file (stemming from a PostGIS reader) that is read correctly in FME (green object below). After exporting it as a File Geodatabase with geodb_multipatch geometry, I get the orange result. Any idea on what might be going wrong in the FeatureWriter?

I have a set of tabluar data with attributes (X, Y, EPSG). Where the ESPG can be any valid coordinate system. My goal is to create a set of points in a common coordinate system. I understand I could use a TestFilter for each EPSG I'm expecting then create points, but the workbench will fail if the data contains an EPSG code I didn't expect. What is the best approach to create points in a single coordinate system without hard-coding the workbench for a set of expected coordinate systems? Thanks

I have been linking S3Connector and the RasterExtentCoercer via the FeatureReader reading a downloaded COG to get its extent, but thinking about the nature of COGs, is there a way to only read the top layer overview instead of having to download the whole tiff? Downloading is ok for smallish files, but this would save a lot of time for large COG files.

Hi all, Today I wanted to set an attribute based on incoming values of an fme_feature_type name. I noticed that if I wanted to avoid getting an 'Incomplete Transformers' warning from FME, I would have to expose the fme_feature_type attribute first, before I could use it in e.g. an Attribute Value expression of e.g. an AttributeManager or AttributeCreator. Note that it was possible to disregard the warning, and the expression would still work. I wanted to avoid the incomplete (red cogwheel) warning. But as I also wanted to keep things clean in the workspace, I wanted to perform both actions in an AttributeManager; first expose fme_feature_type in the first line, and then in the second line set a new attribute using the exposed fme_feature_type attribute. However, I noticed that the AttributeManager still shows up as incomplete (red cogwheel), and if I look at the summary annotation of the AttributeManager it only shows the line about creating the new attribute, but not the first

Last week a colleague asked me to help him to help him change his dependency of an Esri licence for his workspace, which in this case meant changing from an Esri GDB reader to an OpenAPI GDB reader. In his initial implementation, an Esri GDB FeatureReader was used, in combination with a Where Clause (constructed from incoming attributes), to only read in a portion of the GDB. So for example:However, when we switched from Esri GDB to OpenAPI GDB in the FeatureReader, I noticed that the Where Clause of the FeatureReader was greyed out, so unfortunately using a where clause directly at the FeatureReader was not possible. e.g.:So from there I assumed that a Where Clause would unfortunately not be possible for the OpenAPI GDB Reader, and when using the OpenAPI GDB reader, we should just read in the whole GDB, and then filter out only the relevant features later on. This week however I am attending the FME Server Authoring course of Safe (based on the corresponding trail in the FME Academy),

Hello everyone,  I have an issue with an automatic process generating PDFs since an upgrade of FME server from FME 2017 to FME 2021. The process is quite complex but basically it creates network maps on demand. My issue is that, since the upgrade, the symbols rasterized on the maps are not rendered as usual. The symbols are imported from SVG files generated from an AutoCad dwg (because the network information is from an Autocad/Oracle DB). It uses MapnikRasterizer to produce a raster version of all the information, including the symbols as markers. I have identified the source of the difference in the rendering, it is how MapnikRasterizer handle the SVG. But I don't think it is directly related to the developement of MapnikRasterizer but how FME is integrating it and how FME handle the SVG. The SVG are made from Autocad blocks and most of them have an outline/contour of a slightly different color. So even a plain round symbol is constituted of two shapes.  My issue is that FME 2017

FME Desktop 2022: Polygons fail to be saved in esri geodatabase polygon feature class, In the screenshot below, and the attached data and workbench, I couldn’t figure out why polygons fail to be stored in esri geodatabase polygon feature class             

I'm attempting to dynamically map 141 different excel files containing attribute names (but no attributes) to the corresponding files that contain the actual attributes. There are 51 different files (.txt files in csv format) containing attributes for the 141 "schema" files, so a total of 7191 files containing data - none of which have attribute names in them (they all come in as col0, col1, col2...). Because there are 141 different schemas and because there might be new schemas added over time, I don't want to manually map the attribute names using an AttributeManager or AttributeRenamer. Also, they can change each year, so manually creating a schema file to use in a schema mapper doesn't make sense (the schema file containing the attribute names is horizontal, not vertical as well). I have been trying to use the FeatureReader to map the attribute name files to the attribute value files, as well as the FeatureWriter but I'm not having any success. Does anyone

Hi, fellow FME-ers! I have a NetCDF-file I have exported from ArcGIS Pro that I have attached (zipped). It was exported using the settings in the png-file in the same zip-file. I want to export every grid point in the file as a 3D-point with the Prediction as an attribute. Can anyone help me? I saw other threads about this but still couldn't figure out how to do it... Kind regards,Peter

Hi, I will calculate the average z-value of a ground surface based on a point cloud.So at the moment I am using SurfaceDraper to drap the ground on the surface. After that I am using BoundsExtractor. But here I have only the possibility to get the min_zvalue. I will get the average z-value calculated on all z-values of the polygon. How can I do this? I saw thatt there is also an elevation extracotr. But this transformer only extract the first z-value of the first coordinate. I cannot calculate the average on al z-values. Can anyone give me some help or hints?

For example, we have walls lines, but some times the room has only 3 wall lines. Or sometimes there is gap between wall lines. Is there way to create room shape(area or polygon)? Please see attached Sample CAD Cleaned File.dwg. This is my input dwg file. And I want to create a new layer called _Plines, this layer will have the enclosed polygn created based on the wall lines. The out put is something like CAP Level 1_RevC_MB.dwginputresult

I am experimenting with an aerial raster over a river delta trying to find the fastest way to extract centre lines over the water ways. Creating a point cloud with some sorting has resulted in a multipoint geometry that does a decent representation of the shore lines. Up until this stage the workspace is blazingly fast. But in the next step it becomes painstakingly slow. I have tried both creating a hull around the multipoints as well as buffering them. The former was slightly faster but still very slow. Are there other methods that might process faster? 

My data is all in LL84. I'm curious if I should reproject into UTM or other coordinate system before I use Buffer and Dissolver?  This is due the answer that I got for my other question https://community.safe.com/s/feed/0D54Q00009LDzFBSA1 The solution was changing LL84 into UTM and then everything found correct matches for nearest neighbor. I'm doing additional work with same data but this time applying a 4 foot buffer to each point and then running them through dissolver to see which points are near each other. It appears to work fine but after my last answer I'm thinking I should reproject the data to UTM and then do this work.  Thoughts?

However, if an old verison of file is already present in the path, then it is able to rewrite the file. But i want each time it creates a new file. Kindly suggest

Hi FME'ers, I have access to Ordnance Survey's CodePoint with Polygons through the PSGA. I am trying to write a workbench that would dissolve the individual postcode polygons into the areas (DN), districts (DN1) and sectors (DN1 1). The issues here are vertical streets (sometimes stacked) and islands postcodes. I haven't had too much issue with areas and districts, they iron themselves out at these scales, but sectors are just a mess. I have been playing around with the Dissolver, Clipper, DonutBuilder and DonutHoleExtractor but each approach has it's issue.  I would be very grateful if anyone could share how they have achieved the above.  Many thanks,David.