On 6/7/2013 3:37 PM, Peter Jensen wrote: > As mentioned, Rockhopper also has a HAL graph visualizer. It would > be simple enough to divorce this from the web server, but right now > I'll leave that as an exercise for the reader;-)
Since Peter's Python coding style is so much better than mine, I'll push this thought forward so others can share the experience:-) 0) get Rockhopper and install supporting packages, notably graphviz and pygraphviz (see http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Rockhopper_Web_Server), but you've already done that, right? 1) have LinuxCNC running and loaded with a HAL configuration (this is necessary so all the .hal files have already been parsed and loaded into memory so Peter's code can access the data needed). 2) in a terminal window, make sure the environment variable PATH includes the path to your LinuxCNC binaries and the environment variable PYTHONPATH includes the path to your LinuxCNC python interface. For example, I have been building run-in-place installations from git pulls in a linuxcnc-dev directory in my home directory, kreed, so this step means PATH=/home/kreed/linuxcnc-dev/bin:<other paths> and PYTHONPATH=/home/kreed/linuxcnc-dev/lib/python:<possibly other paths> The easy way to set the environment variables is to source the script provided in the distribution (for run-in-place, that is) of the LinuxCNC you are running. This means invoking . <path to LinuxCNC scripts subdirectory>/rip-environment where the above is typed "dot space" and so on. In my case, this means invoking . /home/kreed/linuxcnc-dev/scripts/rip-environment 3) execute the command python <path to Rockhopper directory>/MakeHALGraph.py <name of output svg file> So, for example, since I placed the Rockhopper directory in my home directory python /home/kreed/Rockhopper/MakeHALGraph.py fancyschmanzy.svg generates a file fancyschmanzy.svg file in the current working directory from the HAL configuration in my running instance of LinuxCNC. 4) enjoy --- Obviously one doesn't need to use fully qualified file and directory names but I wanted to be error on the side of being pedantic rather than cryptic. Obviously, all this could be turned into a self contained, do-all script, placed on the desktop with a cool Penguin-related icon, etc. To make Peter's script read from .hal files independently of LinuxCNC would take some work. For my own hal2html, which could read from either .hal files or a running LinuxCNC, I write my own naive parser for reasons I explained, but one could be bold and hook into the existing parser in halcmd. To borrow a phrase from Peter, "I'll leave that as an exercise for the reader." Finally, I have to say this focus on HAL graphs is detracting from the other very nice pages that Rockhopper presents to the user. The LinuxCNC Configuration Page, for example, is a joy when it comes to examining .ini files. Props. Regards, Kent ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
