Dia ChangeLog report for Tue Oct 22 07:23:02 2002 (UTC)
Snapshots available at http://www.crans.org/~chepelov/dia/snapshots *** Recent ChangeLog entries: --- ChangeLog.previous 2002-10-19 09:23:39.0 +0200 +++ dia-cvs-snapshot/ChangeLog 2002-10-22 09:23:08.0 +0200 @@ -1,3 +1,9 @@ +2002-10-21 Lars Clausen [EMAIL PROTECTED] + + * app/connectionpoint_ops.c (diagram_update_connections_object): + Allows more than one connectionpoint on an object to be moved at a + time (bug #96306). + 2002-10-18 Stanislav Brabec [EMAIL PROTECTED] * configure.in: Added cs to ALL_LINGUAS. ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
Re: Dia shapes for chemistry
ChemTool http://ruby.chemie.uni-freiburg.de/~martin/chemtool/chemtool.html Much as I am always glad to see people working to improve Dia and have it interoperate with other programs I wonder if you are using the best tool for the Job. I dont know if it is any good but Chemtool is what the students here seem to use. Best of luck. Sincerely Alan Horkan http://advogato.org/person/AlanHorkan/ On Mon, 21 Oct 2002, Richard Muller wrote: Date: Mon, 21 Oct 2002 15:17:57 -0700 From: Richard Muller [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Dia shapes for chemistry I've just gone through the manuals and learned how to define new shapes and sheets for Dia. I'm really impressed with how easy it is, but had a few questions that I was hoping that someone could answer. ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
Re: Dia shapes for chemistry
You may also want to look at ChemML. I don't have the URL, but I'm sure you can find it on Google. It's an XML technology and from what I understand you can download the appropriate DTD (or is it a XML Schema now?) and your browser should be able to transform the XML into graphical representations of chemicals... or so I've been told. I'm planning on using MathML and ChemML for a website I'm throwing together soon. HTH, Curt --- Alan Horkan [EMAIL PROTECTED] wrote: ChemTool http://ruby.chemie.uni-freiburg.de/~martin/chemtool/chemtool.html Much as I am always glad to see people working to improve Dia and have it interoperate with other programs I wonder if you are using the best tool for the Job. I dont know if it is any good but Chemtool is what the students here seem to use. Best of luck. Sincerely Alan Horkan http://advogato.org/person/AlanHorkan/ On Mon, 21 Oct 2002, Richard Muller wrote: Date: Mon, 21 Oct 2002 15:17:57 -0700 From: Richard Muller [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Dia shapes for chemistry I've just gone through the manuals and learned how to define new shapes and sheets for Dia. I'm really impressed with how easy it is, but had a few questions that I was hoping that someone could answer. ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia __ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/ ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
Re: Dia shapes for chemistry
On Tue, 22 Oct 2002, Curt Crandall wrote: Date: Tue, 22 Oct 2002 05:30:12 -0700 (PDT) From: Curt Crandall [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: Dia shapes for chemistry You may also want to look at ChemML. I don't have the URL, but I'm sure you can find it on Google. It's an XML technology and from what I understand you can download the appropriate DTD (or is it a XML Schema now?) and your browser should be able to transform the XML into graphical representations of chemicals... or so I've been told. I'm planning on using MathML and ChemML for a website I'm throwing together soon. ChemML is just a markup, you will still need a program of some sort and for display in a browser you would need a ChemML plugin. http://www.webcontentaccessibility.org/science.html ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
Documentation of cybernetic shapes [Re: [Bug 95553] Changed -Cybernetic circuit shapes (fwd)]
Wow! That was very cool. Sending to the list so that this will get archived on the web. I will have to see about making various improvements to the documentation, I made a bunch of screenshots yesterday and have a few notes of what I intend to add. I got a few ideas from the GIMP manual. Thanks, many thanks. Sincerely Alan Horkan http://advogato.org/person/AlanHorkan/ -- Forwarded message -- Date: Mon, 21 Oct 2002 17:04:45 +0200 From: Thorsten Roggendorf [EMAIL PROTECTED] To: Alan Horkan [EMAIL PROTECTED] Subject: Re: [Bug 95553] Changed - Cybernetic circuit shapes Hi, Documentation of cybernetic shapes: ^^^ The cybernetic shapes serve the creation of cybernetic diagrams. Cybernetics is the theory of control circuits. A simple example is the way your air condition controls room temperature. The measured room temperature is compared to the desired room temperature. From the difference of the two an error signal is calculated that is used to tune the operation of the heater or cooler. Different controllers are possible each of which have advantages and disadvantages (e.g. achieved precision, undesired oscillations of controlled variable, speed of adjustment ...). Cybernetic theory can also be applied to extremely complex controllers like for example our brains. Cybernetic systems are usually visualized cybernetic diagrams. Certain elements frequently occur in cybernetic diagrams, as for example sums, differences, products and constant amplification factors, but also temporal filters (e.g. high - and low pass filters), or other more complex functions. Such functions are also called characteristics. Sigmoid threshold function, logistic saturation functions and pure time delays are examples of such more complex, nonlinear characteristics. There are essentially two different conventions for cybernetic diagrams. Sums and products are usually circles. Either the mathematical (greek) symbols for the according operations (sums, products) are inserted. In that case signs (e.g. negatice signs for differences) are added to incoming values. Or special cybernetic symbols are used (something like a large X in circles for sums, differences are marked by black sectors, products are marked as smaller black circles in the surrounding circles). The cybernetic shapes found in dia follow the later convention. Temporal filters are usually shown as capitalized abbreviations in boxes (HPF for high- and LPF for lowpass filters) for convenience. You can do that by using the flowchart shapes that come with dia. The cybernetic shapes add the step-responses of the according filters to the available shapes. The step-responses are important for describing, what the filters will do, and are recognized by everybody, who knows his cybernetics. This is usually not used in cybernetic diagrams, because it is rather complicated to draw. The cybernetic shapes add the step-responses, because they look much nicer and give the diagrams created with these shapes a more unified look. The cybernetic shapes yield the following elements: - Sensory inputs for four directions with text entries for descriptions - Integrators and differences for four directions - sums and products - high- and lowpass filters (their step-responses respectively) - various frequently used characteristics - constant factors and addends in the looks of the characteristics - a template for custom characteristics in the look of the built ins - a pure time delay Remarks for shape developers: The xml in the shape shape files is hand edited and optimized. Customization of the cybernetic shapes should be relatively easy. The cybernetic shapes have some minor issues: The text entries of the sensor shape behave a bit strange. Especially the top sensor text entry shows an undesired response to new lines. I think the problem lies in the dia code. The black sectors of the difference shapes are approximated by svg code using bezier curves. If the line width of the shapes is set to very low values, the approximization shows. Should arcs or even circle segments be one day supported by svg and dia, they should be used in these shapes. When really thick lines are used for the integrator shapes, undesired edges start showing. They are even just visible with the default line width. I minimize that effect, but found no elegant and convincing solution. German translation of the above: Trouble is, I need special characters for that ... I'll use TeX like style for them (a = Umlaut a, u = Umlaut u, o = Umlaut o, s = Umlaut s or Scharfes s or sz). Die Kybernetischen Formen dienen der Erzeugung kybernetischer Diagramme. Kybernetik ist die Theorie der Regelkreise. Ein einfaches Beispiel ist Regelung der Temperatur durch eine Klimaanlage. Die gemessene Temperatur wird mit der erwunschten verglichen. Die Differenz dieser beiden Werte ergibt ein Fehlersignal, das zur Steurung des Heizers/Kuhlers verwendet
Dia, AI files, PDF import [was Re: [Dia and stuff] give some peoplean inch and they will take a mile]
I am bringing this on to the Dia list because i think people might be intersted in some of the tools we have been looking at (for Adobe Illustrator and PDF converision to SVG and stuff) hope you dont mind. On 21 Oct 2002, Ian Redfern wrote: Date: 21 Oct 2002 14:32:32 +0100 From: Ian Redfern [EMAIL PROTECTED] To: Alan Horkan [EMAIL PROTECTED] Subject: Re: [Dia and stuff] give some people an inch and they will take a mile Do you know about pdf2svg from http://www.solidcode.net/backup/pdf2svg/ ? I had not seen it, it seems to also be written in Perl (which they negelect to mention on the web page). I've just run it on a modern .ai file and it seems to work, though there's still a few bugs. I'm going to contact them and see if I can make it produce Dia output as well. Agreed - it's PDF (1.4) from Illustrator 9 onwards - before that it was PostScript. Older versions and version output by visio seem to be more like postscript but i dont really know that much about it. What version output by Visio? Is that a Visio export as illustrator option? I've looked at it, and it seems good quality. In fact, I may adapt it to replace my pstoshape. But I'll need .ai files to test it on - I have none. I can probably help out with sample AI files. It also won't work with Illustrator 9 and above. For that, I suggest something more like pdf2ps followed by pstoshape. working with old AI files would be great, the kind of people who use open source dont generally have the latest and greatest versions of these things. I also think that it is something that would be useful for Dia, Sketch and possibley even OpenOffice Draw. Not directly, unless Dia starts importing SVGs soon. But I could easily i am sure you have noticed the that the Dia.shape are mostly SVG Dia has some sort of SVG import in CVS i have no idea how good it is but i will try and impress upon the developers that i think it is a hugely important feature. enough make an ill2dia as well. It wouldn't handle Illustrator files made in the last two years though. Would it make more sense for me to turn pstoshape into pstosvg? How much use will ill2svg be if it only handles files from before June 2000 (which is when Illustrator 9 shipped)? I dont really know, I guess you can only ask for files and based on the response get an idea of how useful it would be. The way i see it OpenSource is built on idealism and wishful thinking so before i get any more cynical i may as well continue putting my random ideas out there. Good luck, i will help out in whatever ways i can, back to my job hunting ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
Re: Dia shapes for chemistry
Hmmn I have used chemtool, and it is great, but you can't draw circles which are important for showing delocalised electrons, e.g. benzene. Hence why I use dia. Robert On Tue, 22 Oct 2002 12:58:16 +0100 (IST) Alan Horkan [EMAIL PROTECTED] wrote: ChemTool http://ruby.chemie.uni-freiburg.de/~martin/chemtool/chemtool.html Much as I am always glad to see people working to improve Dia and have it interoperate with other programs I wonder if you are using the best tool for the Job. I dont know if it is any good but Chemtool is what the students here seem to use. Best of luck. Sincerely Alan Horkan http://advogato.org/person/AlanHorkan/ On Mon, 21 Oct 2002, Richard Muller wrote: Date: Mon, 21 Oct 2002 15:17:57 -0700 From: Richard Muller [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Dia shapes for chemistry I've just gone through the manuals and learned how to define new shapes and sheets for Dia. I'm really impressed with how easy it is, but had a few questions that I was hoping that someone could answer. ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia -- Message From : Robert Smith E-mail : [EMAIL PROTECTED] Web : http://www.surf-u.co.uk --- Money couldn't buy friends but you got a better class of enemy. - Spike Milligan : Puckoon (1963) ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
Re: Dia shapes for chemistry
[EMAIL PROTECTED] writes: Hmmn I have used chemtool, and it is great, but you can't draw circles which are important for showing delocalised electrons, e.g. benzene. Hence why I use dia. I'm suprised that this form is in such wide use. I thought that people tended to use the Kekule cyclohexatriene form even though we know the bonds are hybridized. $0.02. apm (apologies for being slightly OT...) ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
Re: Dia shapes for chemistry
Yeah a lot of people use the kekule' structure but for phenolic compounds, this can often lead to a misinterpretation of chemical compound structures and reactions, hence why I use the circle to show the delocalised electrons. In this way the electrons from the O in the phenols are also accounted for. Robert On Tue, 22 Oct 2002 15:42:48 +0100 Andrew Marlow [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] writes: Hmmn I have used chemtool, and it is great, but you can't draw circles which are important for showing delocalised electrons, e.g. benzene. Hence why I use dia. I'm suprised that this form is in such wide use. I thought that people tended to use the Kekule cyclohexatriene form even though we know the bonds are hybridized. $0.02. apm (apologies for being slightly OT...) ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia -- Message From : Robert Smith E-mail : [EMAIL PROTECTED] Web : http://www.surf-u.co.uk --- Money couldn't buy friends but you got a better class of enemy. - Spike Milligan : Puckoon (1963) ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
[OT] Chemistry (was Re: Dia shapes for chemistry)
Yeah a lot of people use the kekule' structure but for phenolic compounds, this can often lead to a misinterpretation of chemical compound structures and reactions, hence why I use the circle to show the delocalised electrons. In this way the electrons from the O in the phenols are also accounted for. Hmmn I have used chemtool, and it is great, but you can't draw circles which are important for showing delocalised electrons, e.g. benzene. Hence why I use dia. I'm suprised that this form is in such wide use. I thought that people tended to use the Kekule cyclohexatriene form even though we know the bonds are hybridized. Just every so often, mailing lists get really, really interesting in a way you never expected them to get interesting. I imagine my postings about esoteric ER diagramming needs for Dia sound as Greek to others as this does to me. Why do I find this amusing and interesting in a profound fundamental fashion: that Dia would cause extreme chemists extreme database gurus to be reading the same posts? It gives me kind of a unity among men feeling. It also gives me a good feeling that when someone questions why I'm using Dia to diagram databases, I might be able to reply: If it's good enough for showing delocalised electrons in benzene (compounds?), then certainly it's good enough for modelling classes associations. In any case, Organic Chemistry 101 cannot prepare one for the psychological trauma associated with attempting to understand the above exchange... ;) -- Tim Ellis Senior Database Architect Gamet, Inc. ___ Dia-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/dia-list FAQ at http://www.lysator.liu.se/~alla/dia/faq.html Main page at http://www.lysator.liu.se/~alla/dia
