gpsbabel has a great option that will simplify by removing any points that are within a set distance of the line drawn between its neighbours. The only problem with the route points gpx file is that is has way too many points for the Garmin. There may be other options, I haven’t looked because this does the job nice and simple (it’s nice to leave a donation if you think so too). For the route points I use the advanced options to get next turn info and turn directions. Once I have the route I want, I use to convert it into a gpx files of the track point and route points that I download. There are still one or two stretches of cycle routes that it won’t add to routes, but another factor when compared to some other routing services is that it won’t send me on a detour over a rough path instead of a short distance on a medium busy road. First, it’s dead easy to change the route by adding and dragging an intermediary way point second street view and the aerial photos let me check out the type of road/track that it’s sending me on. I’ve tried lots of others, including the following a route using the Garmin eTrex or phone/OSMAnd as satnav, and routing on QMapShack, on Cycle Streets and Bing Maps they all have their strengths, but Google wins because of two features. I tend to do my route planning for bike rides on Google Maps. For navigation en route I follow a planned track on eTrex and/or on my phone using OSMAnd. In short I use Google Maps in cycle mode plot the route, to download a GPX of that route, gps babel to simplify and transfer the GPX file to the eTrex, and QMapShack to view and manage the various GPX files on Ubuntu. This post is just about the route planning, which has moved on. That post has the info about how my eTrex is set up to connect to Ubuntu and to use OpenCycleMap, which still works for me. One of my long-term popular posts on this blog is about Using Garmin eTrex Vista HCx with Ubuntu 14.04LTS & QLandkarte GT. If you continue, conflicting files will be replaced losing the previous content.įor now I said no and I am running QMapShack using a local compiled version with a recent git checkout.Obviously, this is a summer holidays post, not work related. Proj-6.0.0-37.1.x86_64 conflicts happen when two packages attempt to install files with the same name but different contents. After the operation, additional 9.3 MiB will be used.Ĭontinue? (y): y The following NEW package is going to be installed: Installed proj5 despite file conflicts and got a working QMapShack. Other question: Would it be appropriate to open a bug on ? That looks good only libproj.so.13, so not sure where that libproj.so.15 in the ldd output comes from > objdump -p /usr/bin/qmapshack | grep NEEDED Note, however, that this alternative shows only the direct dependencies of the executable, while ldd shows the entire dependency tree of the executable I read “PROJ 6 has undergone extensive changes” and that is not yet supported by QMapShack:Ĭhecking the YaST Software Management I see proj has no non-6.0.0 versions, but I have libproj13 installed than gives 5.2.0-31.6Ī safer alternative when dealing with untrusted executables is: $ objdump -p /path/to/program | grep NEEDED So had a look at the and saw that version 6.0.0 has been released and “projinfo” reveals I am running that. "īut that gives me "parameter error: no arguments in initialization list’ My $proj = Geo::Proj4->new(init => "epsg:32661") or die "parameter error: ".Geo::Proj4->error. Please contact the package maintainer of your distribution to fix it.") The translation tables for EPSG projections usually stored in /usr/share/proj are missing. ,tr("QMapShack detected a badly installed Proj4 library. ProjPJ pjsrc = pj_init_plus("+init=epsg:32661") That runs fine, so it looks like the proj4 library is installed, only QMapShack is missing something that was available before the update. Or die "parameter error: ".Geo::Proj4->error. My $proj = Geo::Proj4->new(proj => "merc", Installed that and executed a small test program: #!/usr/bin/perl Tried to search for the proj4 package (sudo zypper se proj4) but could not find it, only a perl-Geo-Proj4 package. I did update my Tumbleweed system this morning and after a reboot I tried to start QMapShack, but it refuses to start saying “QMapShack detected a badly installed Proj4 library”:
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The two topologically distinct ways of smoothing a conifold are thus shown to involve replacing the singular vertex (node) by either a 3-sphere (by way of deforming the complex structure) or a 2-sphere (by way of a "small resolution"). a quintic hypersurface in the projective space C P 4 has complex dimension equal to four, and therefore the space defined by the quintic (degree five) equations:įor the purpose. (1988) and employed by Green & Hübsch (1988) to prove that conifolds provide a connection between all (then) known Calabi–Yau compactifications in string theory this partially supports a conjecture by Reid (1987) whereby conifolds connect all possible Calabi–Yau complex 3-dimensional spaces.Ī well-known example of a conifold is obtained as a deformation limit of a quintic - i.e. This possibility was first noticed by Candelas et al. In physics, in particular in flux compactifications of string theory, the base is usually a five- dimensional real manifold, since the typically considered conifolds are complex 3-dimensional (real 6-dimensional) spaces.Ĭonifolds are important objects in string theory: Brian Greene explains the physics of conifolds in Chapter 13 of his book The Elegant Universe-including the fact that the space can tear near the cone, and its topology can change. points whose neighbourhoods look like cones over a certain base. Unlike manifolds, conifolds can contain conical singularities, i.e. In mathematics and string theory, a conifold is a generalization of a manifold. |