Hi @dmerrick,

FME can automatically generate a local Azimuthal Equal Area coordinate system from your data and write that to the DWG file along with the data, using the CommonLocalReprojector transformer.

If you want more control over the location of the origin, you can also define a local Azimuthal Equal Area coordinate system through the web page, and reproject from UTM into that coordinate system before writing to DWG.

Both of these methods are fairly simple in FME, and would give you a more reliable result than trying to scale the UTM data, since the applicable scale factor changes with the distance from the central meridian.

Hello @dmerrick, I am trying to do the same thing (UTM Zone 53 to Ground) and was just wondering if you solved the problem.

Hello @daveatsafe do you have any examples or advice on this as I am trying to do a similar thing to @dmerrick. We want to be able to create an AutoCAD DWG that is in ground coordinates so the drafting team does not have to apply any transformation. The data is in grid coordinates using GDA2020 Zone 53 and we want to apply the transformation in FME to output the drawing in ground coordinates.

Hi @deanhowell,

Please try sending the data through the CommonLocalReprojector before writing it to AutoCAD.

Hi @deanhowell, I had forgotten about this project (the Engineers shift/factor the data on their end), I will have another look at it.

Thanks @daveatsafe I will give that a go :)

@deanhowell after going back over the data with the engineers, what they wanted (coordinate system in ground), all I had to use was the Scaler transformer (Scale Origin at 0,0) to convert the data.

@deanhowell after going back over the data with the engineers, what they wanted (coordinate system in ground), all I had to use was the Scaler transformer (Scale Origin at 0,0) to convert the data.

Thanks that is what i did as well but the change to ground was so small that it didn't seem necessary but does seem effective once the scale factor was worked out. Thanks again