Claude Bélanger wrote: > Hi, > > How should I compute the ratio for pd 'aspect ...' on different screens at > different resolutions. > > On a ASUS M70Vseries Notebook PC, 17" Display WXGA+ with a screen resolution > of 1280 x 720, I use a ratio of 0.9, trial and error. > > Thanks in advance. > > Claude Bélanger > [email protected] > > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm >
I must not understand the use of "pd 'aspect n'". My notebook computer dual boots Vista 32 and OpenSUSE Linux 64. Under Vista, a pie plot is very close to being perfectly round. I tried using "pd 'aspect 2'" to distort the plot and it came out exactly as before. I tried the same test on Linux. SaX2 shows that my screen is 331 mm by 207 mm, which I verified via ruler. SaX2 also shows the Aspect Ratio as 1.6. The Aspect Ratio based on the measured screen size is 1.599. The Aspect Ratio based on the screen dimensions of 1280x768 pixels is 1.667. The Aspect Ratio based on single pixel size is 0.959. My pie plot using J602 was initially a small percentage taller than wide. I noticed that the screen pixel dimensions that Linux had used were not the native dimensions of 1280x800. I updated SaX2 to use 1280x800. This corrected the proportions of the pie plot, which was now circular. The single pixel aspect ratio for 1280x800 is 1. I could not get "pd 'aspect n'" to make any difference in the proportions of the pie chart, in Linux or Windows. Can anyone demonstrate the use of "pd 'aspect n'"? -- Thanks, David Mitchell ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
