User Forum » Topic: Lakes and Rivers

User Forum » Topic: Lakes and Rivers http://mapdiva.com/forum/ User Forum » Topic: Lakes and Rivers en Sun, 26 May 2013 03:50:30 +0000 Erik M-H on "Lakes and Rivers" http://mapdiva.com/forum/topic.php?id=367#post-1145 Thu, 16 Feb 2012 17:57:19 +0000 Erik M-H 1145@http://mapdiva.com/forum/ I love these examples, Jill — thank you! I had worked out the multi-stroke track trick and had a result very similar to yours, which looks really good, I think. But the path-converted-to-outline example was a real jaw-dropper. Dead brilliant! But you definitely identified the problem with it: joining tributaries. I’ve worked at it for a while and have come fairly close to solving the problem, but there are three difficulties: <ol> <li>It’s too complicated: <ul> <li>draw all rivers in advance as paths (no need for great precision)</li> <li>outline them</li> <li>apply a multi-stroke inner-clipped style</li> <li>combine>union</li> <li>convert>path</li> </ul> </li> <li>Unlike combine>append (which really butchers the joins!), combine>union handles the joins brilliantly; unfortunately, it moves the points around a lot (and deletes some) — so a lot of manual readjustments are necessary.</li> <li>Headwaters really won’t work at all.</li> </ol> So, reluctantly, I’m concluding that the (far simpler) multi-stroke track solution is probably the best compromise. It does look pretty good! Or perhaps you have further outline-ish thoughts? … jsaligoe on "Lakes and Rivers" http://mapdiva.com/forum/topic.php?id=367#post-1144 Tue, 14 Feb 2012 17:25:18 +0000 jsaligoe 1144@http://mapdiva.com/forum/ Hi Erik, Making Maps is a great blog – John Krygier is great about finding and posting historic cartographic examples. In fact, I often look at these as case studies to see if/how they might be reproduced in Ortelius. I love the river styles you've mentioned <a href="http://makingmaps.net/2011/11/03/map-symbols-river-features-latvia-1920s/" rel="nofollow">http://makingmaps.net/2011/11/03/map-symbols-river-features-latvia-1920s/</a> Of course these are quite tricky to reproduce digitally with linear features such as rivers (in a semi-automated way). You *could* use tracks and a multi-stroke track for different width rivers. Alternatively, you could draw the rivers with paths, then convert the paths to their outline and use a mutli-path style clipped inside (much like your water-bodies). This might be less satisfactory for joining tributaries. Below is a really quick representation of those two ideas - love to see what you come up with <img src="http://mapdiva.com/forum/my-plugins/bb-smilies/default/icon_smile.gif" title=":)" class="bb_smilies" /> <img src="https://www.mapdiva.com/wp-content/uploads/2012/02/Screen-Shot-2012-02-14-at-4.20.24-PM.png" /> Erik M-H on "Lakes and Rivers" http://mapdiva.com/forum/topic.php?id=367#post-1143 Tue, 14 Feb 2012 16:16:50 +0000 Erik M-H 1143@http://mapdiva.com/forum/ This was very helpful Graham, thank you. Have you all seen John Krygier’s wonderful postings of Latvian map features from the 1920s? I’m still working out how to replicate some of <a href="http://makingmaps.net/2011/11/03/map-symbols-river-features-latvia-1920s/">these river and river-related features</a>. runyan on "Lakes and Rivers" http://mapdiva.com/forum/topic.php?id=367#post-1121 Mon, 06 Feb 2012 09:38:02 +0000 runyan 1121@http://mapdiva.com/forum/ Hi, Thank you for the advice. I'll Give it a try and let you know how it turns out. -R gcox on "Lakes and Rivers" http://mapdiva.com/forum/topic.php?id=367#post-1119 Sun, 05 Feb 2012 18:24:11 +0000 gcox 1119@http://mapdiva.com/forum/ Hi, Depending on the scale you're working at, you could borrow the approach used by the Ordnance Survey - for me one of the finest examples of cartography anywhere. The OS use a number of styles for rivers, streams and lakes, all of which share the same basic stroke colour, a mid-blue. The streams have a thinner stroke than the small rivers, but one they get wide enough to warrant a fill, a lighter blue is used. This style can be used for wider rivers, lakes and oceans. Because they all share the same mid blue stroke, they'll match when adjoined. Note that the built-in collection has a number of styles for water which follow these ideas. I'd also recommend using the track tool for rivers that can be represented as a line feature, but set the 'type' attribute to watercourse (Object Inspector/Features) so they won't be considered for automatic connection to roads or other line features. Some artistry will still be needed to nicely mate line-feature watercourses to those with a fill, but having the same border colour throughout will make this a lot easier. Smoothly blending a narrow stream into a wider river can be done using the standard technique for linear blending of styles along a track. Here's one I did to show what I mean, hope it helps. Note that this is just two objects - the linear river path (track) and the lake shape, but it uses four styles from the 'water' category: <img src="http://mapdiva.com/forum/images/river-and-lake.png" /> runyan on "Lakes and Rivers" http://mapdiva.com/forum/topic.php?id=367#post-1118 Sat, 04 Feb 2012 22:28:19 +0000 runyan 1118@http://mapdiva.com/forum/ Hi, I was wondering if anyone can tell me the best way to make realistic Lakes and from those lakes rivers. I'm working on a fantasy map, and I can't seem to get the rivers to flow from the lakes and out to the oceans properly. Every time I try, the Rivers don't look smoothly enough heading into the oceans, as if there is no border between the edge of the land and the river flowing into the ocean. Any help would be appreciated. Thank You.