[GRASS-user] ps.map and line style
Hello, in a map composition I need to draw contours with two particular linestyles: - a line bedecked with crosses: xxxx - a double line: = I am wondering if there is a simple way to specify e.g. a postscript linear pattern that applies to vlines, the same way we can with vareas. Any idea ? Vincent ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] ps.map and line style
Vincent Bain wrote: Hello, in a map composition I need to draw contours with two particular linestyles: - a line bedecked with crosses: xxxx - a double line: = Hi Vincent, I have plotted a double line like this: vlines my_lines color yellow width 1.5 label Chirp lines lpos 4 style 000111 end vlines my_lines color black width 3 label Chirp lines lpos 4 style 000111 end The top entry in the file plots on top in the map. This gives a black dotted line with a yellow middle. Specifying the same legend position recreates the pattern in the legend. Later John -- Dr John Stevenson Postdoctoral Research Associate School of Earth, Atmospheric and Environmental Sciences Williamson Building (Room 2.42) University of Manchester Manchester M13 9PL, UK tel. +44(0)161 306 6585; fax. +44(0)161 306 9361; john.steven...@manchester.ac.uk ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] ps.map and line style
Vincent wrote: in a map composition I need to draw contours with two particular linestyles: - a line bedecked with crosses: xxxx I suspect for that you might have to use the v.lrs modules or v.to.points to make points along the line at a regular interval, then display them over the top with a vpoints command. Perhaps there is another way though. Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] ps.map and line style
Hi John, thanks for the trick, I'll give it a try, though I need two black lines with /transparency/ in between. Vincent. Le mardi 12 janvier 2010 à 10:10 +, John A Stevenson a écrit : Vincent Bain wrote: Hello, in a map composition I need to draw contours with two particular linestyles: - a line bedecked with crosses: xxxx - a double line: = Hi Vincent, I have plotted a double line like this: vlines my_lines color yellow width 1.5 label Chirp lines lpos 4 style 000111 end vlines my_lines color black width 3 label Chirp lines lpos 4 style 000111 end The top entry in the file plots on top in the map. This gives a black dotted line with a yellow middle. Specifying the same legend position recreates the pattern in the legend. Later John ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] ps.map and line style
Yes Hamish, this is what I was planning to do in the end. If I go this way, I'll probably have to implement an 'angle' attribute in order to align my point symbols on the line direction... Will give it a try too, thank you, Vincent. Le mardi 12 janvier 2010 à 02:57 -0800, Hamish a écrit : Vincent wrote: in a map composition I need to draw contours with two particular linestyles: - a line bedecked with crosses: xxxx I suspect for that you might have to use the v.lrs modules or v.to.points to make points along the line at a regular interval, then display them over the top with a vpoints command. Perhaps there is another way though. Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] ps.map and line style
Vincent: I need two black lines with /transparency/ in between. try the offset or coffset setting within the vlines instruction: offset (experimental) - offset for the vectors lines in pixels for plotting parallel lines in distance equal to offset (accepts positive or negative decimal points). Useful to print streets with several parallel lanes; coffset (experimental) - offset for the vectors lines. If coffset is used then off- set of line is equal to coffset * category value and offset is used in legend; (I think that pixels should really say points, but..) Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
