On 2014-04-07 12:00-0700 Alan W. Irwin wrote: > [...]I will take a look.
The GNU debugger (gdb) made this a really easy issue to solve. It turned out the issue was an integer overflow in an unused (in the plbox case) calculation of physical coordinates corresponding to the default 0., 0., world coordinates of the unused axis origin which was very far from the actual range of world coordinates used in the plot for example 29 page 5 and above. I eliminated this issue (as of revision 13099) by making sure the physical coordinates of the axis origin were only calculated when needed (i.e., the "a" option was specified and the corresponding axis line was somewhere in the viewport). This tightening of the logic makes the physical coordinate of the axis line a reasonable integer number which by definition cannot overflow. Thanks, Hazen, for spotting this long-standing bug which would have occurred in the past for any plbox call where the range of data was relatively far from zero so the calculated (but unused) axis line was very far outside the actual viewport. We were "lucky" that example 29 provided such a plbox call so we could find and fix this bug. Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); the Time Ephemerides project (timeephem.sf.net); PLplot scientific plotting software package (plplot.sf.net); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ ------------------------------------------------------------------------------ Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuously Automate Build, Test & Deployment Start a new project now. Try Jenkins in the cloud. http://p.sf.net/sfu/13600_Cloudbees _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
