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I have a few building blocks and land parcels in a dxf file that look like this

enter image description here

I am writing to a csv file using FME the following attributes:

land parcel number | xmin| xmax | ymin | ymax

The last four attributes correspond to the bounding box of each land parcel.

I want to add the attribute 'building block' to each land parcel. I.e. in the above example Γ251 (=autocad_string) should correspond to each land parcel shown.

land parcel number | xmin| xmax | ymin | ymax | building block name

Any ideas on how make this work?

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You are doing 2 things right? one is the csv, the other is adding the additional label into the autocad? – U2ros Oct 9 '12 at 6:56
Why are you using PointOnAreaOverlayer? Are the parcels and the blocks not both areas? – sgrieve Oct 9 '12 at 7:54
U2ros: it is producing a csv with the above mentioned attributes (land parcel number | xmin| xmax | ymin | ymax | building block name) – Nik Oct 9 '12 at 8:08
sgrieve: In this dxf land parcels and building blocks are designed using autocad_lines, I then build areas in FME to retrieve the bounding boxes. – Nik Oct 9 '12 at 8:13

1 Answer

up vote 3 down vote accepted

Okay, so for the xmin,xmax,ymin,ymax you will need boundsextractor (collects actual mmin/max of the feature) or boundingboxreplacer/extractor combined with bounds extractor.

From the picture i take it that buildings also have a polygon (+ text labels). So first thing i would do is join those labels with building polygons (pointonareaoverlay), then simply overlay buildings (with attribute building name) with parcels.

If you can post a sample dwg, i could make you a fme workspace

enter image description here

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Sample dwg: skydrive.live.com/… – Nik Oct 9 '12 at 14:02
Okay, i downloaded the sample file. Do i understand correctly: Yellow line represent parcels and small yellow labels represent parcel numbers (Layers: NidAir, NidOria), and big yellow label is a building block names and the green polygons represent building blocks? (One green polygon has no corresponding big label, just so you know) – U2ros Oct 9 '12 at 16:08
Exactly. Yellow line represent parcels and small yellow labels represent parcel numbers (Layers: NidAir, NidOria), and big yellow label is a building block names and the green polygons represent building blocks. – Nik Oct 9 '12 at 16:48
Okay, check out this first workspace to get you started: ge.tt/9MbItBP/v/0 Please note, that i used topolgybuilder-areabuilder because your dwg files contains lines. Unfortunetely this produces a few parcels that dont actually exist, so the final csv file needs to be cleaned up a bit, or, you need to have a dwg with closed polylines (best). Anyway, this should get you started into the right direction. Also, i produced i few shape files, so you can check intermediate results – U2ros Oct 9 '12 at 17:48
I am using an FME build of 2010 (I cant use a topologybuilder). I am using the textproperty extractor for parcel strings and I add pointonAREAoverlay. For building blocks I am using again the TextProperty Extractor – Nik Oct 10 '12 at 12:49
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