> propabaly we forgot to change the language files here (it should be only > units).
I think that scale used in this way is a ratio and has no units, so units as a hint is not appropriate. Units is probably too generic anyway since the scale calculation assumes meters. As far as the accuracy of the screen scale goes, I think no one is using a precision measuring device on their on-screen map, however if it is displayed on printed maps, IMO it needs to be accurate or omitted. regards, Larry Becker On 8/20/07, Stefan Steiniger <[EMAIL PROTECTED]> wrote: > 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 > -- 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
