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Here lurk gremlins

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(@bruce-small)
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Years and years ago I included a routine in my data collection software to automatically draw a saguaro cactus to scale. Nothing to it, really: SAG9 will draw a saguaro 9 feet tall, with the cross at the bottom the horizontal location.

Today I was collecting elevations on a site and came across two transplanted saguaros, so I located them. When I ran the file into AutoCAD they both drew something like 30 feet tall instead of 5 feet. Now why would something that has run perfectly for decades do a fizzle? Ah, usually I do the horizontal first, then the grid elevations and break lines. I located these saguaros while getting grid shots, and I didn't want to plot the elevation, so the code was NOEL/SAG5. For whatever reason, the culprit was NOEL plus SAG, lurking all these years and just waiting for the right combination of descriptors.

 
Posted : 17/06/2017 6:53 pm
 John
(@john)
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So, let me get this straight. A routine that I am figuring You wrote, you are now saying has (now had) a gremlin. Which makes you a master gremlin if I got the sequence correct? 😀

 
Posted : 17/06/2017 7:38 pm
(@rj-schneider)
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Bruce Small, post: 433064, member: 1201 wrote: the code was NOEL/SAG5.

[SARCASM]It's pretty obvious AutoCAD thought it was Christmas time and just went big on the tree. [/SARCASM]

 
Posted : 18/06/2017 8:46 am
(@bruce-small)
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I now know what I did years ago. I often have multiple codes/descriptors at one point, such as: B CURB/B SWK. I knew that a saguaro descriptor would always stand alone because nothing would ever connect to a saguaro, so it couldn't handle the NOEL/SAG5 coding. The lesson learned is never say never.

 
Posted : 18/06/2017 12:42 pm
(@peter-lothian)
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I was just about to start a gremlin thread, but saw this one, so here goes. This morning I'm merrily drafting away, then get a phone call. Then get asked to set up a transmittal for a plan we finished last week. So I write the transmittal in Word, and print it out. Open the PDF of our plan in Adobe and print 6 copies to a large format Xerox plotter. While waiting for the Xerox to do it's thing I sit back down to my computer and notice that AutoCAD has a pop up message saying "Plot and Publish Job Complete". I open up the details and it displays:

Job: - Plotted
Job ID: 1
Sheet set name:
Date and time started: 6/19/2017 10:49:50 AM
Date and time completed: 6/19/2017 10:49:51 AM
UserID: plothian
Profile ID: Carlson2016
Total sheets: 1
Sheets plotted: 1
Number of errors: 0
Number of warnings: 0
Sheet: - Plotted
File: G:Carlson Jobs24974Dwg24974 SRV-WP.dwg
Category name:
Page setup:
Device name: Canon iPF785
Plot file path:
Paper size: 24"x36"(ARCH D)

The thing is, I never sent anything to the Canon plotter this morning. Check the plotter tray, and sure enough, nothing plotted from my drawing. I check the command history, and there is nothing there about sending a plot. The only thing that happened since taking my phone call is a couple of autosaves, since I forgot to hit qsave before moving on to my other errands. Very weird.

 
Posted : 19/06/2017 7:37 am
(@peter-lothian)
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And I found the gremlin. A coworker jumped on my computer to plot a drawing while I was off to see the Xerox machine, made here plot, then closed the drawing so I would not see anything in the command line history. Mystery solved.

 
Posted : 19/06/2017 8:04 am
(@rod-taylor)
Posts: 10
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Bruce Small, post: 433064, member: 1201 wrote: Years and years ago I included a routine in my data collection software to automatically draw a saguaro cactus to scale. Nothing to it, really: SAG9 will draw a saguaro 9 feet tall, with the cross at the bottom the horizontal location.

Today I was collecting elevations on a site and came across two transplanted saguaros, so I located them. When I ran the file into AutoCAD they both drew something like 30 feet tall instead of 5 feet. Now why would something that has run perfectly for decades do a fizzle? Ah, usually I do the horizontal first, then the grid elevations and break lines. I located these saguaros while getting grid shots, and I didn't want to plot the elevation, so the code was NOEL/SAG5. For whatever reason, the culprit was NOEL plus SAG, lurking all these years and just waiting for the right combination of descriptors.

Did you reboot it after midnight?

 
Posted : 19/06/2017 9:23 am