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Working with MrSids aerials are really slow Civil 3D 12 & 13

12 REPLIES 12
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Message 1 of 13
lissaucad
806 Views, 12 Replies

Working with MrSids aerials are really slow Civil 3D 12 & 13

For whatever reason, working with MrSids aerials with Civil 3D 2012 & 2013 is really slow these days.  Three of us CAD techs have Dell Precision T3500 PC's with 24 GB of RAM with Windows 7.  I worked with the same aerials 4 years ago using ust 4 GB of RAM with Windows XP.  Is there a better type of aerial technology to work with rather than the MrSid aerials? Should we try to get the County to purchase another type of aerial technology to more easily depict the County so we can more quickly produce aerial roadways with stationed alignments..  Dave

 

12 REPLIES 12
Message 2 of 13
ToddRogers-WPM
in reply to: lissaucad

Are you attaching these as FDO connections, or are you inserting the image into the drawing?



Todd Rogers
BIM Manager
Blog | Twitter | LinkedIn

Message 3 of 13
antoniovinci
in reply to: lissaucad


lissaucad wrote:

Is there a better type of aerial technology to work with rather than the MrSid aerials?


Yes sir, connect to a WMS server.

Message 4 of 13
dgordon
in reply to: antoniovinci

do you find that those types of images are handled more easily by C3D?   I'm not very familiar with wms servers.   Does your firm pay to have access to these or are there free one's out there?

 

 

Dan

Civil 3D 2013
Win 7 Pro x64
Intel Xeon 2.0GHz
12Gb Ram
ATI Firepro 4800
Dell T5500
www.preinnewhof.com
Message 5 of 13
ToddRogers-WPM
in reply to: dgordon

There are some free WMS servers out there.  If I have a SID image, I usually just "connect" it rather than insert the image.  Performance is much better.



Todd Rogers
BIM Manager
Blog | Twitter | LinkedIn

Message 6 of 13
Neilw_05
in reply to: dgordon

There are lots of free WMS services with imagery, but WMS servers will only serve the content of the service provider. Usually their offerings are old and/or low resolution and load times may not be any better than loading your own imagery.

 

If you have specific imagery that you want to use you'll need to reference them locally. Autocad has always been doggy with imagery. Using Map's FDO connection vs. inserting can improve performance and it also allows for the imagery to dynamically reproject to different coordinate systems. The down side to FDO and WMS is the images won't load for users who don't have Map.

Neil Wilson (a.k.a. neilw)
AEC Collection/C3D 2024, LDT 2004, Power Civil v8i SS1
WIN 10 64 PRO

http://www.sec-landmgt.com
Message 7 of 13
dgordon
in reply to: ToddRogers-WPM

i did a fdo connect to raster image of one of our sid files and i did not notice any difference in performance over just having the image inserted into the drawing.

 

i'm finding it very difficult to find a free wms service to connect to.   quite often it asks for user name and password of which i  have neither.

 

anyone have any suggestions?

 

Dan

Civil 3D 2013
Win 7 Pro x64
Intel Xeon 2.0GHz
12Gb Ram
ATI Firepro 4800
Dell T5500
www.preinnewhof.com
Message 8 of 13
ToddRogers-WPM
in reply to: dgordon

Username and password are usually blank, you just hit OK.  Here is a link to some good WMS sites with username and password info...

 

http://www.lib.ncsu.edu/gis/ogcwms.html



Todd Rogers
BIM Manager
Blog | Twitter | LinkedIn

Message 9 of 13
dgordon
in reply to: ToddRogers-WPM

do any of these web services work for you?

 

NAIP Imagery - What's NAIP?
http://ge-nt.ncmhtd.com/cgi-bin/naip2010.cgi? - NAIP 2010
http://ge-nt.ncmhtd.com/cgi-bin/naip2010ir.cgi? - NAIP 2010 IR
http://ge-nt.ncmhtd.com/cgi-bin/naip2009.cgi? - NAIP 2009
http://ge-nt.ncmhtd.com/cgi-bin/naip2009ir.cgi? - NAIP 2009 IR
http://ge-nt.ncmhtd.com/cgi-bin/naip2008.cgi? - NAIP 2008
http://ge-nt.ncmhtd.com/cgi-bin/naip2006.cgi? - NAIP 2006

1998 DOQQs - What are DOQQs?
http://ge-nt.ncmhtd.com/cgi-bin/doqq1998.cgi? - DOQQ 1998
http://ge-nt.ncmhtd.com/cgi-bin/doqq1998.cgi? - DOQQ 1998 IR

 

I can't get any of them to connect.

 

I get this message every time

 

fdo connect error.png

Dan

Civil 3D 2013
Win 7 Pro x64
Intel Xeon 2.0GHz
12Gb Ram
ATI Firepro 4800
Dell T5500
www.preinnewhof.com
Message 10 of 13
ToddRogers-WPM
in reply to: dgordon

Works for me, but if you scroll to the bottom of the website I sent you, there are links to better places.  The ones you listed are exclusive to North Carolina.  The links are under the WMS Indexes and Servers.



Todd Rogers
BIM Manager
Blog | Twitter | LinkedIn

Message 11 of 13
Neilw_05
in reply to: ToddRogers-WPM

Sometimes the links posted on blogs and websites are not the actual link to the server but rather to the metatadata for the servers. If you have problems with the links you should open it in a web browser to see it's contents. If it is indeed just the metadata then you can usually find the WMS link address in that metedata. Just copy and past it into the Map WMS connection.

Neil Wilson (a.k.a. neilw)
AEC Collection/C3D 2024, LDT 2004, Power Civil v8i SS1
WIN 10 64 PRO

http://www.sec-landmgt.com
Message 12 of 13
nsummitt
in reply to: lissaucad

I have to disagree with you completely.  FDO connection is much much much slower (to the point of almost useless) rather than attaching the image using imageattach.

 

The FDO raster is a joke on Map2010 3D.  If you have a half an hr (slight exaggeration) to let it load when you zoom in you will be fine, but if time is precious and you want accurate placement.  Bring the image in the fdo and mark the four corners.  Then attach the image as an image and rubbersheet the corners of the image to the one that were marked on the FDO.  This way, placement stays accurate and you get a much better response time once the image is inserted, plus other, non-map version of autocad can see the image this way....  

 

 

Message 13 of 13
Neilw_05
in reply to: lissaucad

One factor to consider when working with SID files is they use a compress/decompress algorythm to display the image and adjust the resolution as you pan and zoom your drawing. So while SID images are smaller and load faster than uncompressed images, they tend to slow down Autocad while you work.

 

The alternative is to use umcompressed images which use more disk space and take longer to load, but performance can be somewhat better once loaded since there is no need to decompress. There is also the option to use images that have been decimated to reduce file size (and quality). The challenge is to balance performance vs. file size and resolution.

Neil Wilson (a.k.a. neilw)
AEC Collection/C3D 2024, LDT 2004, Power Civil v8i SS1
WIN 10 64 PRO

http://www.sec-landmgt.com

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