Geological maps
Printed From: CAD Forum
Category: EN
Forum Name: Civil 3D, Map, InfraWorks
Forum Description: Discussion about mapping and GIS applications Map, Civil3D, InfraWorks, MapGuide and Raster Design
URL: https://www.cadforum.cz/forum_en/forum_posts.asp?TID=6998
Printed Date: 11.May.2026 at 15:50
Topic: Geological maps
Posted By: Shravan
Subject: Geological maps
Date Posted: 07.Dec.2011 at 11:54
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Dear freinds,
I am a new user of the autocad. I am going to scan few geological maps which are in 1:20000 scale with different latitudes and longitudes one after the other. Then I wish to digitize them and position those maps as per the latitudes and longitudes in any scale I need (1:100,000). Is it possible to have all those maps bundled together in a single larger map showing common lat and long? Plz help me with the procedure. Regards, 
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Replies:
Posted By: John Connor
Date Posted: 07.Dec.2011 at 11:58
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I wouldn't scan them if I were you. The file size just for one geological map will be quite high but to do several and then try to edit them in one drawing will most likely crash your system. I'm pretty sure you can download USGS maps in a DWG format. ------------- "Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>> |
Posted By: Shravan
Date Posted: 07.Dec.2011 at 12:05
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Dear John,
I am contemplating scanning of a single contour line (may be oil-water contact contour) in each of the scanned map. Moreover, sir, I have not more than 50 of such maps and most of them are in A4 size excepting few which are in A3. besides I have access to these hard copies only. Help!! |
Posted By: John Connor
Date Posted: 07.Dec.2011 at 12:39
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Then there doesn't seem to be a problem with your proposed methodology. Go for it.
------------- "Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>> |
Posted By: Shravan
Date Posted: 07.Dec.2011 at 13:00
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Sir,
My querry is still alive. Plz help me with the procedure. Sorry for disturbing your sleep. You may reply after a sound sleep 
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Posted By: John Connor
Date Posted: 07.Dec.2011 at 13:07
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You have already outlined the procedure you are going to follow. It sounds like it will work. I don't think I need to fly to India and hold your hand while you do it. So, what further information do you need? Sleep? I've been up since 3:30 a.m. I don't require much sleep. Five hours max is good enough. ------------- "Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>> |
Posted By: Shravan
Date Posted: 07.Dec.2011 at 13:13
| Procedure for bundling all digitized maps into one larger one! You may reply if you please. |
Posted By: John Connor
Date Posted: 07.Dec.2011 at 13:20
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Scan them individually then bring them all into one drawing as a series of xrefs would create the least amount of drag on your system. Sync each scan, one to the other, using the Align command. You may reply if your fingers still function. ------------- "Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>> |