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From |
Friedrich Huebler <fhuebler@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: graphics complaints (Windows too) |

Date |
Thu, 19 Nov 2009 16:01:33 -0500 |

Chinh Nguyen and Vince Wiggins of StataCorp provided a solution in the post below. http://www.stata.com/statalist/archive/2009-11/msg01093.html For a straight line drawn with -twoway function- the -n(2)- option should be added. . twoway (scatter y x, connect(l) clwidth(thin)) (function y=x+1, range(0 100) n(2) lwidth(thin)), aspect(1) Friedrich On Thu, Nov 19, 2009 at 12:05 PM, G Livesey <glivesey@inlogic.co.uk> wrote: > Dear All, > > I confirm Friedrich observation for my Windows system, and note that: > > 1) the connect line has a somewhat similar appearance, but steps in one > direction only at a lower regular frequency (unrelated to screen pixels). > 2) the function line wavers at higher but irregular frequency (also > unrelated to pixels). > > Such appears at all sizes of the graph window. > > Such in STATA 11 SE, 21st Oct installation and updates, on MS Win XP (ado > versions noted below signature line). > > > I would support technical examination of this issue. > > Geoff. Livesey. > > Note also: > > which twoway > C:\Program Files\Stata11\ado\base\t\twoway.ado > *! version 1.2.0 16apr2007 > > which scatter > C:\Program Files\Stata11\ado\base\s\scatter.ado > *! version 1.2.0 16apr2007 > > which range > C:\Program Files\Stata11\ado\base\r\range.ado > *! version 2.1.1 13dec1998 > > > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Friedrich Huebler > Sent: 19 November 2009 16:03 > To: statalist@hsphsun2.harvard.edu > Subject: Re: st: graphics complaints (Windows too) > > > Dave wrote about Stata on OS X but I have a similar observation about Stata > on Windows, specifically concerning -twoway function-. > > A y=x line drawn with -twoway function- is not as straight as a line drawn > with -twoway scatter, connect-. The difference can be illustrated with the > following commands. > > . clear > . set obs 2 > . gen x = . > . replace x = 0 in 1 > . replace x = 100 in 2 > . gen y = . > . replace y = 0 in 1 > . replace y = 100 in 2 > . twoway (scatter y x, connect(l) clwidth(thin)) (function y=x+1, range(0 > 100) lwidth(thin)), aspect(1) > > The -function- line is uneven and can indeed be described as "shocked with > electricity", to use Dave's words. Is it possible to draw a > -function- line as straight as a -scatter, connect- line? > > Friedrich > > On Wed, Nov 18, 2009 at 3:57 PM, Airey, David C <david.airey@vanderbilt.edu> > wrote: >> . sysuse auto >> (1978 Automobile Data) >> >> . scatter weight length, ms(oh) // small o >> >> never renders well on my system, and copying the graph preserves the >> oblong symbols >> >> . scatter weight length, ms(Oh) // large O >> >> doesn't show the complaint >> >> I sent you off list the horrible rendering of a graph twoway function >> (y=x). Looked like someone shocked it with electricity. >> >> -Dave * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**Re: st: graphics complaints (Windows too)***From:*Friedrich Huebler <fhuebler@gmail.com>

**RE: st: graphics complaints (Windows too)***From:*"G Livesey" <glivesey@inlogic.co.uk>

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