2006/3/31, Radim Blazek <<a href="mailto:radim.blazek@gmail.com">radim.blazek@gmail.com</a>>:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I would like to include my implementation of LRS<br>(lineare reference system) which was available here<br><a href="http://mpa.itc.it/radim/lrs/index.html">http://mpa.itc.it/radim/lrs/index.html</a><br>in standard GRASS distribution.
<br><br>The LRS supports georeferencing of points and segments<br>given by linear feature, e.g. a road and a position on the<br>linear feature in real world for exemple km+meters.<br>It can also do reverse task, that means to report linear feature
<br>and position (road nr., km+m) for point (near the road).<br><br>I have a question about terminology, I am in doubts how to call<br><br>1) The value specifying certain fix point in real world, e.g.<br> milepost, milestone. The point has usually a physical representation
<br> but I mean the value it represents i.e. mile, kilometer,<br> not the physical object.<br><br>2) The value which specifies the distance along a linear object<br> from 1) (from milepost) to a certain position on the linear feature.
<br> The distance is given for example in meters or feets.<br><br>3) How to call the module which generates labels of existing LRS<br> Here is example of a map with labels and strokes generated<br> byt this module:
<a href="http://mpa.itc.it/radim/lrs/stationing-small.png">http://mpa.itc.it/radim/lrs/stationing-small.png</a><br><br>I hope that native english speakers and people working with LRS can help.<br><br>Thanks<br>Radim<br></blockquote>
</div><br>Hello,<br>Good job, LRS is very interesting. Maybe I'm wrong, but may it be usefull for one-dimensional hydraulic/river modelling ? Strokes could be cross-sections with associated profile. I'm thinking about river modelling software like FEQ or HEC-RAS.
<br><a href="http://www.hec.usace.army.mil/software/hec-ras/">http://www.hec.usace.army.mil/software/hec-ras/</a><br><a href="http://il.water.usgs.gov/proj/feq">http://il.water.usgs.gov/proj/feq</a><br><a href="http://www.iqdotdt.com/">
http://www.iqdotdt.com/</a><br><br>3) v.lrs.label ?<br><br>Thanks<br>Laurent