Hie Uwe, if you activate the button that takes the current value for seting up the smallest/largest scale you will see that RealScale should be taken (if i remember correctly). I need to look where the hint comes from.. propabaly we forgot to change the language files here (it should be only units).
I would like to note that this RealScale is only valid for the monitor/screen. It may not be valid when a print on paper is done. stefan Uwe Dalluege schrieb: > Hi Larry, hi Stefan > > thank you for your detailed explanation! > So the Current Scale in Change Style>Scale is equal the RealScale. > > But what is about the check box > "Only show layer when scale is between:" > There we find the hint Units/Pixel. > > Is the "Smallest/Largest" Scale in Units/Pixel (InternalScale) > or the RealScale from Stefan? > > Regards, > > Uwe > > Larry Becker schrieb: >> Oops, I meant to say: >> >> Of course, a scale expressed as a ratio of 1:3780 means that one >> unit on the map represents 3780 units on the ground. So if we were to >> print out the new project window as it was first opened, we would see >> that one cm on the paper would be equivalent to 3780 cm or 37.8 m in the >> real world. This, of course, assumes that Stefan's math is correct. >> >> Larry >> On 8/18/07, Larry Becker <[EMAIL PROTECTED]> wrote: >> >>> Hi Uwe, >>> >>> There are two kinds of scale in JUMP. The internal scale is given by: >>> >>> internalScale = ModeViewWidth / PixelViewWidth. (typically units of >>> meters/pixel) >>> >>> The internalScale is used to transform distance between model space >>> and screen space (at a particular view's zoom level) via a simple >>> multiplication or division. >>> >>> Stefan modified the Change Style>Scale panel to compute a new display >>> scale in late 2005 he called real scale. He used: >>> >>> realScale = ModeViewWidth * 100 / (INCHTOCM / SCREENRES * PixelViewWidth) >>> >>> This is basically the same equation with the conversion from pixel >>> size to model units factored in. When a new project window is first >>> created, the internalScale will be 1 and every pixel will be one model >>> unit wide. The realScale will be 3779.527559055118 or approximately >>> 3780 as you reported (given a SCREENRES of 96 and an INCHTOCM of >>> 2.54). >>> >>> Of course, a scale expressed as a ratio of say 1:5000 means that one >>> unit on the map represents 5000 units on the ground. So if we were to >>> print out the new project window as it was first opened, we would see >>> that one cm on the paper would be equivalent to 5000 cm or 50 m in the >>> real world. This, of course, assumes that Stefan's math is correct. >>> :-) >>> >>> regards, >>> Larry Becker >>> >>> >>> >>> On 8/18/07, Uwe Dalluege <[EMAIL PROTECTED]> wrote: >>> >>>> Hi, >>>> >>>> does anybody knows how the scale >>>> of Change Style>Scale is calculate? >>>> >>>> I have a screen resolution of 1280 x 1024 pixel. >>>> When I use OpenJUMP with full screen >>>> the graphical window has a size of about 1060 x 860 units >>>> (coordinate display). >>>> >>>> The current scale shows me a value of 1:3780. >>>> >>>> What does it mean? >>>> >>>> Regards, >>>> >>>> Uwe >>>> >>>> >>>> >>>> ------------------------------------------------------------------------- >>>> 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/ >>>> _______________________________________________ >>>> Jump-pilot-devel mailing list >>>> Jump-pilot-devel@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >>>> >>>> >>> -- >>> http://amusingprogrammer.blogspot.com/ >>> >>> >> >> > > ------------------------------------------------------------------------- > 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/ > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > ------------------------------------------------------------------------- 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/ _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
