![code for polygon generator in scratch code for polygon generator in scratch](https://i.stack.imgur.com/b6fYF.jpg)
It typically takes a geometry and a distance parameter. This corresponds to buffers, a common operation on spatial data, of course supported in QGIS. Buffersįrom a geometry point of view, the waterlines can be seen as shrinked or expanded copies of the coastline polygons. There is no built-in waterlining style in QGIS, nor a dedicated plugin, so I had to find how to achieve that look. You can find this on many maps from the 19th century, for example on the famous and incredible Dufour map of Switzerland. This is this representation of water where seas and lakes are filled with repeated lines, growing from the coasts.
![code for polygon generator in scratch code for polygon generator in scratch](https://i.ytimg.com/vi/iD3yqmQVv9I/maxresdefault.jpg)
One of the typically vintage features I'd like to have on my map is waterlining. Despite the complexity, I learned a lot and it's a delight, something I think I could do for months. But I had never used it intensively to design a static map from scratch. Mostly for quick tasks, like data visualization, projection fixing, assessment of coordinate precision, etc. I've used it from time to time at work during the last 10 years. I'm using QGIS to design a map from OpenStreetMap data, to get a digital version as close as possible to what I'll try to engrave. My masochism will only be applied to the engraving and printing parts, so I'm using modern data and tools for that. I have to decide what part of the world I want to map (ok, it will be some part of Scotland), the format, the scale, the typography, the look of everything. And because I'm crazy, I guess.įor now, I'm still in the planning phase. Just to see the amount of work it required. The idea is to apply the techniques used by engravers of old maps before the modern reproduction means.
![code for polygon generator in scratch code for polygon generator in scratch](https://i.ytimg.com/vi/S5dw_Jz2RUQ/maxresdefault.jpg)
I'd like to give the first one a vintage look, reminiscent of maps from the early 19th century. After three years of practicing intaglio on various subjects, I finally want to try to make maps.