On 2017-03-27 21:38-0500 AARON HEXAMER wrote: > For lack of a better term ... I'm looking for a feature that could place a text label in the viewport closest to a desired coordinate, but without intersecting any plotted data nor being clipped by the viewport bounds? AFAICT, there is no API that does this. I suppose its probably non-trivial. I'm wondering though if there is some feature that could test for intersection/clipping before updating the plot so I could provide an iterative method of placement. Any thoughts?
Hi Aaron: I am sorry, but as far as I know we don't have such an API or a way to test for intersection of a graphical element with any (previous) graphical element. > To understand the problem I'm trying to solve, see this post where the GM and PM labels get clipped (https://www.picotech.com/support/topic14311-120.html#p78941). I suppose I could also let the user configure label placement, but only if there's no other practical way to automate it. I took a look at that plot, and the fundamental issue is you are trying to label two points with extremely long labels that get clipped at the viewport boundary because the two points are close to the RHS of the plot. I suggest instead you mark those two points with distinct single-glyph symbols (using plstring), and then use a legend (the pllegend API for PLplot, see <http://plplot.sourceforge.net/examples.php?demo=04> for an example) to give additional details for each symbol. In my opinion that method is the ideal way to present all the information you plot now. Thanks for your interest in PLplot. 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 __________________________ ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Plplot-general mailing list Plplot-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-general
