If I have a triangle ABC on the canvas, and a similar triangle in the
georeferencer plugin window, and I map A to B, B to C, C to A, what must
I do to see the final map rotated?
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t 25 meter increments from the start
of road. Then print label on alternating side of road etc.
Maybe I can accomplish the whole thing without a GUI.
I'll send this to both lists.
>>>>> "FMRdM" == Fernando M Roxo da Motta <pe...@roxo.org> writes:
FMRdM> On Wed, 29
OK I found
http://postgis.refractions.net/documentation/manual-svn/reference.html#Linear_Referencing
So I should:
1. Learn how to import my vector roads from .kmz into postgis. (I'll Google
that.)
2. Use http://postgis.net/docs/ST_Length.html to get the length (L in meters)
of each
of my
NA> This is not true - you can switch to map units everywhere there is a
NA> distance property.
OK I found that. But then the whole layer becomes the selected color to
the entire edges of the planet. And there is no way to undo short of
closing qgis and not saving. As CTRL+Z does not work.
OK I have determined that everything in the Layer Properties menus
(style etc.) I should NOT use, because they are all millimeter based
(and will not change with what scale I print the map at.) And I should
instead look at the degree and meter based plugins like Qchainage.
Thanks. The idea is every 25 meters there should be a (proposed) house
number (location) on the left, then one on the right, left, etc.
Making for a total of 20 + 20 = 40 per kilometer.
Sort of like what I did with GRASS years ago
http://jidanni.org/geo/house_numbering/mountain.html
but clearer
I want to label vectors (roads) with proposed addresses:
21 23 25 27 29
==
22 24 26 28
I suppose I will use the Qchainage plugin and then post-process the
output with a simple perl script to get the exact labels I want (20, 30,
40...).
I don't suppose I can make them on
