Author Topic: Xdata Questions  (Read 1601 times)

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deegeecees

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Xdata Questions
« on: October 19, 2006, 11:53:13 AM »
I am working on some Revision Tracking/Block Setup, etc. for general Plant Layout and Design, and I'm thinking about using Xdata for this. We generally send drawings to clients, and I was wondering if I would have to strip the Xdata out before sending, based on their version of AutoCAD (can't remeber where I got that info from). Has anyone had any good/bad experiences of this sort. Any suggestions for a better way to do this are welcomed of course.

MP

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Re: Xdata Questions
« Reply #1 on: October 19, 2006, 12:06:29 PM »
Whoa, revision tracking -- no small topic!! An abbreviated response: Xdata in concert with dictionaries could work, though in the end likely easier to manage via an external, associated database. The latter route can be tricky if you assume a component's handle won't change (a component frequently being a composite object) which is why many solutions are based on object grouping rather than handles. Like I said, it's a vast topic.

As for stripping xdata, dictionaries .... you could, in what I typically call a lobotomizing exercise, if it yields a more svelte version of the drawing and / or you're concerned about data security. 'Course, you can encrypt data, using a combination of ambitious xoring and base 64 encoding techniques, but now I'm just going tangential on ya!

My advice? Look for an off the shelf software solution first. After exhausting those options then consider a hand rolled solution. If going the latter do a lot of work on paper first, more than one draft, and have many experienced people perform sanity checks on the design -- you'll save yourself much grief!

/fwiw

:)
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deegeecees

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Re: Xdata Questions
« Reply #2 on: October 19, 2006, 12:21:44 PM »
Yeah, I wanted to stay away from any external files, keep everything all inclusive so-to-speak. This place is a mess here. No standards whatsoever, and people start screaming when you shove something like a database in front of em. I figure I could xdata the user and date under the radar so I can keep track of latest drawing for a given component. Reason being, there are tons of files that follow this type of "standard":

"AAS_SF3654_Master Layout_(v2002)EXISTING_PROPOSED_09-13-06_MIKESCOPY.dwg"

"Master Layout" seems to be the favorite around here, sheesh.

So, with some xdata in the dwg, I can DBX to the latest "good" copy. Or something along those lines.

MP

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Re: Xdata Questions
« Reply #3 on: October 19, 2006, 12:28:14 PM »
... This place is a mess here. No standards whatsoever, and people start screaming when you shove something like a database in front of em ...

Do you have authority / approval / buy in / high level champion(s) to do, and support the development work? If not the quoted text tells me "Don't go there; run away".

An aside, going the database route does not necessarilly involve user involvement, i.e. database, creation and management etc. performed 100% by the 'software solution'.
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deegeecees

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Re: Xdata Questions
« Reply #4 on: October 19, 2006, 01:03:29 PM »
Quote
An aside, going the database route does not necessarilly involve user involvement, i.e. database, creation and management etc. performed 100% by the 'software solution'.

I would have to ask MIS for MS Access, then they'd wanna know why...

This is something I'm creating for my own benefit. It may/may not pan out to further ventures pending on how it is recieved when I shine the flashlight on it.

MP

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Re: Xdata Questions
« Reply #5 on: October 19, 2006, 01:09:41 PM »
Playing devil's advocate because someone should --

What happens when they veto the idea and then find out how much time <i.e. money> you've invested in it?

Be careful DGC.

:)
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deegeecees

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Re: Xdata Questions
« Reply #6 on: October 19, 2006, 01:16:21 PM »
Hey, I'm really good at plagiarizing code. If thats my only con out of the P's and C's, then I'll let you know how things go.

Thanks once again for the input Mr. P.