On 2007-09-03 11:33-0400 Hazen Babcock wrote: > Er, well, I actually didn't have any real plans for further xcairo > interactivity. Suggestions however are welcome.
I was referring to the extensive thread we had before about this subject where I believe you concluded that the ability (shown in example 1 if you use the -locate option) of -dev xwin and -dev tk to deliver back the key that was struck as well as the world coordinates of the cursor when that key was struck should be implemented for -dev xcairo when you had a chance. So long as a device has at least this interactive capability then PLplot application developers could write their own command line interface using such devices. For example, there was a very nice CLI I used in the early 90's for analyzing stellar spectra, and I think I still have access to the source code for that. I recall there were something like 30 different commands you could run based on what key was struck and the position of the key at the time of the key strike. You could fit the continuum (based on the points you clicked on), calculate equivalent widths of absorption or emission lines, calculate line positions, calculate the dispersion relation, etc., etc. I am tied up with a different research topic at the moment, but at some point I hope to revive that CLI using -dev xwin (and eventually -dev xcairo when you have implemented the interactive capability referred to above) as the back end. Beyond that fundamental interactive capability, there are all sorts of things you could do to follow what is possible for the -dev tk GUI. (Use that device and click on the Plot button to see what is possible in terms of zooming, scrolling, and colour palettes.) However, turning xcairo into a full-blown GUI is a lot of work and may not be the direction you want to take. Personally, I would be satisfied with just the limited interactive capability that -dev xwin currently has (as compared to the extensive interactive capability of -dev tk) since that limited capability is sufficient to support CLI's. 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); PLplot scientific plotting software package (plplot.org); 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 __________________________ ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
