I've done a search and couldn't find a previous post similar to mine, so here it goes. Apologies if it has been asked
I've been sent a series of CAD drawings in which the author has used global width to define the appearance of features. I need to import this into our GIS, which for reasons too complex to bother with won't import any attributes such as width. I don't want to lose the information recorded so was wondering if it's possible to create a closed polygon to represent the shape of the line. I guess something might be possible using buffering, but I can't figure out how to use the existing line width.
You have some ways to achieve it, either with wide polylines and donuts.
The cleverest one, in my opinion, is _MAPEXPORT to a linear shapefile, adding the following attribute:
Thanks for that, but I don't see how it has helped unless I've misunderstood what it does. When I import the shape file into our GIS it loses the attributes so I'm back to square one. I realise the problem lies with our GIS, but that's what I have to work with.
When you import in your Gis such a shapefile, you'll see the attribute Ewidth in its TOC (Table of Contents), which you can stylize your data with: you'd better speak with one of your Gis collegues, sir.
Unfortunately when the data is imported, (for reasons I don't understand, but have to live with) all attribute data is stripped off so I need something that actually creates a polygon in CAD.
what version of Map3D do you have?
- alfred -
Unfortunately when the data is imported ... all attribute data is stripped off
They are stripped off 'cause you forget to force the creation of Object Data (please Alfred, show him how, since at home I'm acadless...)
No, it's not as simple as that. I know how to attach data and in all other situations it's fine. The problem is that the GIS is part of the corporate network and when data is added in the format that it needs to be added so that the linkages with the rest of the database occur all data apart from the layer, which has to be the UID of the object being linked is lost. Please, this is not a GIS issue, or rather it is, but one that cannot be fixed. Please can you accept that the issue cannot be resolved by having attributes attached to a line. Unless you want to start discussions with our corporate GIS I need a way to do this and create a polygon in CAD? If the answer is no then I'll accept it, but it just strikes me that it ought to be possible. Sorry if I'm getting frustrated.
now I'm unsure what the goal behind really is, sorry (and don't get more frustrated!)
First you wrote that you get dwg-files using polylines with polyline-widths where you like to convert the polyine with width to a polygon that shows the border around the polyline-width (at least that was how I understood the original post).
For that my workflow would be:
What I now don't understand is the last message with:
>> when data is added in the format that it needs to be added
>> so that the linkages with the rest of the database
What is stored in the drawing with the polyline (with globalwidhts) that fits to your final GIS-structure using UID's?
Either you have already ID's assigned to the polylines, then I don't see where these data is destroyed on the way it get's converted from line-topo to polygon-topo ... but maybe I'm missing something now.
Look to the video (done with 2010, so your 2011 can do that also) and let us know how this is useful (or not) for you.
- alfred -
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