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Mapping

Show Profile  Michael Posted: 1 May 2012, 4:29 PM  
Wish planners did that more often:-)

Show Profile  nh Posted: 3 May 2012, 5:44 PM  
A handy trick for magnetic north lines:

Rather than drawing each north line individually, you create a hatched area symbol, similar to undergrowth, for the north lines, and draw over the whole map. Then when a north line passes over feature and obscures it, you simply cut a hole.

This is really handy if you change the map scale, eg from 1:15,000 to 1:10,000 and the north lines need to have different spacings, as you can just edit the symbol rather than redrawing every line

Show Profile  rossmaxmo Posted: 3 May 2012, 7:46 PM  
It's a bit easier just to use the grid lines feature with vertical lines, then you can set the spacing to what it should be.

Show Profile  Michael Posted: 3 May 2012, 8:08 PM  
OK Ross what's your time-saving trick for nibbling the lines off at the top and bottom of the map?

Show Profile  theoman Posted: 3 May 2012, 8:12 PM  
Nicks technique is amazing. I used it for the ANOC maps...work a charm. Really easy to cut holes too!

Show Profile  rossmaxmo Posted: 4 May 2012, 6:35 AM  
Scissors

Show Profile  Michael Posted: 4 May 2012, 9:31 AM  
I've always begrudged the time it takes to do a layout (maybe version 11 will help here). But its got a bit better with the realisation that, if you get into "edit object" mode before selecting a group of objects, you can stretch and squeeze the whole group in different ways. I'm thinking of bits of legend and logos etc which usually come from another map and need to fit into a new space. Those scale bars consisting of black and white rectangles for example, can be stretched out to fit a different scale.

Show Profile  Casser Posted: 4 May 2012, 10:01 AM  
Cool with all these useful tips/tricks.

I like to make a thin line symbol, that I use to digitalise my scanned fieldwork. When the line is in the right place (corresponds the fieldwork) I use the "change symbol of object" tool to convert it into the right symbol (often a fat line - contour/track).

I do this to avoid having the drawing line obstructing the view of the scanned fieldwork.

Show Profile  Jason Posted: 4 May 2012, 11:19 AM  
Is anyone doing image processing to convert scanned raster images of their fieldwork sketches into vector objects? (I had the impression that OCAD10 can recognise contour lines from scanned maps- might be wrong on that point.)

Show Profile  Michael Posted: 4 May 2012, 12:04 PM  
Haven't heard of anything in OCAD current or proposed. There's other software http://en.wikipedia.org/wiki/Comparison_of_raster_to_vector_conversion_software but how clean is your fieldwork???

Show Profile  The Map Guy Posted: 4 May 2012, 2:09 PM  
Gee you must be a neat (tidy) fieldworker Jason if you want to be able to convert your raster image into vector format. Probably best to manually draw it. That way you can guarantee that what you did out in the field will appear on the final map the way you intended it to be.

I can see it would be of "some" use if you were converting a pre OCAD map into OCAD, but I suspect it would be best to start from scratch and produce a georeferenced map. It will be a great deal more accurate.

Show Profile  nh Posted: 4 May 2012, 2:33 PM  
Usefull if converting competiton map images to ocad for cf though

Show Profile  theoman Posted: 4 May 2012, 3:24 PM  
Yea...Tracing an entire jpeg into ocad can be a little tiresome. Would be cooler if there was a faster way to get the edge on the competition.

Show Profile  nh Posted: 4 May 2012, 9:51 PM  
Imagine tracing a whole map!! That would take forever...

Show Profile  Paul I Posted: 4 May 2012, 11:27 PM  
@theoman: always looking for that edge



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