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Mapping

Show Profile  Michael Posted: 9 January 2012, 1:45 PM  
Thanks. Is it possible there are multiple returns with the same xyz, maybe this is how they can distinguish reflections from the treetops, ground etc. Though I would have thought a local body would use a surveying contractor, who would have filtered out erroneous and irrelevant data. Maybe if the resulting contours look noisy, select only the data with highest intensity.

Show Profile  Dave N Posted: 15 January 2012, 9:54 PM  
Hi, I couldn't find 15m DEMs for Whangarei, but had already interpolated 5ms into 20ms, for 300 acres of park-like pine plantation. OCad8. The result seems good enough for a map we'll use once a year.
WDC GIS has a systemic shift of about 50metres ...contours to cadastral.

After field working 3 contours on a hilltop above the 160m contour, I found a trig, whose height is 180m...very nice :-)



Show Profile  Michael Posted: 16 January 2012, 11:59 PM  
On a small area the human is better than any mathematical interpolation.

Show Profile  Michael Posted: 24 January 2012, 5:54 PM  
A bugbear of mine is errors in "partial map" using a selected curved object as the cutline. On a few of my maps it gives trouble - missing and spurious line objects in the resulting file. In response to my recent enquiry OCAD says they have found the cause of this problem and it will be fixed in the next service update. If you can't wait that long they suggest it is only where the cutline has a long curved segment, and you can insert extra points in the cutline.

Show Profile  Bryan Posted: 25 January 2012, 8:19 AM  
I just use straight lines for my cutline so never have encountered this problem thankfully.

Show Profile  KevO Posted: 25 January 2012, 8:56 AM  
New DEM to become available in 2014
http://www.astrium-geo.com/en/168-tandem-x-global-dem

Article on BBC Material World Podcast [19/1/12]
http://www.bbc.co.uk/programmes/b019gzqh

Show Profile  Michael Posted: 25 January 2012, 12:58 PM  
1. Looks good. 2. They talk about "customers".

Show Profile  Casser Posted: 26 January 2012, 12:43 PM  
It is a top of trees DEM because they use radar, which in x-band (the radar wave length they use) don't penetrate vegetation and reflects off the vegetation top. Might be good to know before buying.

Show Profile  richardh Posted: 1 February 2012, 8:02 AM  
Ocad 11 new and revised features, coming in European spring...
http://ocad.com/en.wiki/index.php?title=Renewals#Revised_or_New_Features

Show Profile  Michael Posted: 1 February 2012, 7:19 PM  
Interesting, including the wiki itself. No mention of it on the main OCAD website, how'd you find it Richard?

Show Profile  richardh Posted: 8 February 2012, 11:31 PM  
On facebook I am friends with Olles Maps and Jan Kocbach. They both post interesting stuff, and the link to ocad 11 wiki came from Olles Maps.

Show Profile  richardh Posted: 9 February 2012, 12:02 AM  
Correction.
The good gen comes from 'liking' the following pages on Facebook
WorldofO.com
Ultimate orienteering
Olles Maps
Routegadget
Check the vids out in the last one, such as RR37 YouTube link

Show Profile  The Map Guy Posted: 9 February 2012, 10:48 AM  
The OCAD 11 wiki is also mentioned in the latest OCAD newsletter (about the same time as Richard's original posting (1 Feb) above.

For those of you who don't get the OCAD newsletter go into the OCAD website and download it www.ocad.com

Show Profile  Bryan Posted: 16 February 2012, 1:57 PM  
For the World Cup we are required to do offset printing.

Has anyone done any offset printing recently?

Did you use Ocad 10 and what option did you use:
- export to pdf (cmyk process)
- export to pdf (spot colors - combine or separate)
- print to file (spot colour separations)

I'm concerned with the way Ocad handles offset printing (when I turn on the spot colours view I can see overlaps I don't want and when I print a spot colours PDF file I see wrong results - eg settlement areas have turned to yellow (where I've quickly drawn the surrounding yellow by not following the boundary exactly).

Keen to see what others have experienced.
Also printing costs would be helpful so I can compare quotes with printers (eg proof print < 10 copies,
small print run 10-200, medium print run > 200)


Show Profile  Michael Posted: 16 February 2012, 2:08 PM  
Question: I want to export control points to supplement a permanent rogaine course. This was an actual rogaine but the markers will have been picked up, and the plan is that you can do some practice at any time, analyse your track afterwards, or use "Go to" when you think you are there, etc.

I can export the controls jfrom version 10 just fine, but in the resulting gpx file they have an ID that is, for my purposes, random. I suppose "wpt1" was the first control point I defined, "wpt2" the second etc, but I want to call them (for example) "CP25" and "CP100". Of course the characters 25 and 100 are there on the map but as text objects and not logically related to the circles. (I didn't use a course setting package, maybe the answer is there.)

I can laboriously change wpt1 to CP25 etc in a text editor but it's slow and error-prone. Any ideas?


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