I was thinking of taking a tangent approach. How about PlotDuJour? > On Nov 4, 2020, at 3:37 PM, Jerry Jensen via use-livecode > <use-livecode@lists.runrev.com> wrote: > > Neil DeGraph Tyson? > >> On Nov 4, 2020, at 3:09 PM, Roger Guay via use-livecode >> <use-livecode@lists.runrev.com> wrote: >> >> Oooh, I like it! How about VanDeGraph? >> >> Roger >> >>> On Nov 4, 2020, at 3:03 PM, scott--- via use-livecode >>> <use-livecode@lists.runrev.com> wrote: >>> >>> I assume the expanded version will be called SedanDeGraph. >>> — >>> Scott >>> >>>> On Nov 4, 2020, at 10:09 AM, Roger Guay via use-livecode >>>> <use-livecode@lists.runrev.com> wrote: >>>> >>>> Hi Alex, >>>> >>>> Thanks for your continued interest in my little project. I have succeeded >>>> in implementing a multiple polygon approach, but it ain’t elegant as they >>>> say! >>>> >>>> I seem to recall that I learned a lot from your GraphMaker some time ago, >>>> but as I try to review your latest on your website, I run into repeated >>>> errors about “can’t find handler gmSetCustomMarker”. I can’t seem to make >>>> any headway to resolve this. Am I supposed to do something with the >>>> “Library”? I could not find instructions anywhere. >>>> >>>> Meanwhile, I should explain further that I am trying to expand on a stack >>>> that I built 2 or 3 years ago called CoupDeGraph which you can find in the >>>> Example Stacks of LiveCode. Put simply, I am currently trying to expand on >>>> CoupDeGraph to be able to handle double-valued equations. >>>> >>>> Again, thanks for your help >>>> >>>> Roger >>>> >>>>> On Nov 3, 2020, at 4:48 PM, Alex Tweedly via use-livecode >>>>> <use-livecode@lists.runrev.com> wrote: >>>>> >>>>> On 31/10/2020 02:28, Roger Guay via use-livecode wrote: >>>>> >>>>>> Lots of clever ideas here, Alex, but I think you’re missing the point of >>>>>> what I ultimately want to do. I'm building a plotting program for which >>>>>> I want to plot any equation including those that have multiple values of >>>>>> y for a given x. An equation might branch at any point and might even >>>>>> have multiple branches both of which are unknown before plotting. >>>>>> >>>>>> Of course, there’s always the possibility that I’m not fully >>>>>> comprehending your suggestions??? What does NB stand for? Are you >>>>>> suggesting creating a new polygon every time a branch is detected? That >>>>>> just might work?! >>>>> >>>>> Hi Roger. You're right - I missed the point; I jumped to the assumption >>>>> that you were asking about a fairly small, specific issue - so leapt too >>>>> quickly to a code sample. But before I address the general question(s), >>>>> let me get the little points out of the way :-) >>>>> >>>>> NB - sorry, kind of common usage in British English. Actually, it's from >>>>> a Latin phrase - "Nota Bene" - meaning "note well". So basically just >>>>> 'take note of'. >>>>> >>>>> "a new polygon every branch" - yes, perfectly possible. Also possible is >>>>> what I did in the first case of the code sample - a new 'sequence of >>>>> points' for each branch, and then stitch those together (with blank lines >>>>> between) into a single polygon; but that's, for now, a detail. >>>>> >>>>> The essence of the problem is that your app will (somehow) develop a >>>>> number of 'sequences of *data* points' - and then those need to be >>>>> translated into equivalent sets of *display* points (by either a plotting >>>>> library, or by your own code) to allow it to be displayed appropriately. >>>>> >>>>> There are at least two possible plotting libraries that might do what you >>>>> want (or do something close enough that they could be useful). By >>>>> coincidence, they were both discussed at the San Jose LC conference in >>>>> 2019.If you have access to the video / papers from that you might already >>>>> have some of the info you need; I don't know if the conference papers are >>>>> ever put out for more general usage later. >>>>> >>>>> Option A. Monte described a wrapper for the JSPlot library. It's a very >>>>> powerful library capable of many kinds of graphs / plots, and very quick >>>>> and capable. The most obvious downside is that it needs to be used within >>>>> a browser widget - but well worth looking at it if you can. >>>>> >>>>> Option B. I did a library called "GraphMaker" - a pure-Livecode plotting >>>>> library. It is (I think) fairly easy to use - but that may not be the >>>>> case for someone else coming to it new. I know it can handle this case of >>>>> bifurcating plots (using multiple sequences of data points). The >>>>> conference slides were a decent, if very brief, introduction; the >>>>> lengthier documentation was, maybe, not quite complete. However, it does >>>>> come with a demo app that uses the library to draw a variety of graph >>>>> types. Main advantage is it's pure LC, and hopefully easy to use - both >>>>> in understanding and in ease of integration into an app (you just create >>>>> a suitable group to contain the graph, set its rect properly and pass in >>>>> all the point data along with various parameters. It has nowhere near >>>>> the coverage of different graph types that JSPlot does - it's basically >>>>> line, bar and scatter plots, with primary X-axis, and can have shading, >>>>> etc. >>>>> >>>>> Option C. Roll your own. >>>>> >>>>> I'd certainly suggest investigating the use of an existing library first. >>>>> There's quite a lot of effort needs to go into determining how to scale >>>>> the data to the space available, how to label the axes, how to add tick >>>>> marks, grid lines and (perhaps) multiple Y-axes. That stuff probably >>>>> accounted for 90% of the effort of creating the library. >>>>> >>>>> If you'd like to try out my library, the latest version can be found at >>>>> >>>>> https://www.tweedly.org/lcms.lc/GraphMaker >>>>> >>>>> (sorry - I haven't formatted it into my usual download structure - so >>>>> this is simply a page that gives links that allow you to download the 2 >>>>> files you need and 2 more files you don't need.) >>>>> >>>>> Of course, I'll be happy to help out in any way I can with it. >>>>> >>>>> Alex. >>>>> >>>>> P.S. the demo app includes an example of a 'branching' plot (Graph 3). >>>>> >>>>> >>>>> _______________________________________________ >>>>> use-livecode mailing list >>>>> use-livecode@lists.runrev.com >>>>> Please visit this url to subscribe, unsubscribe and manage your >>>>> subscription preferences: >>>>> http://lists.runrev.com/mailman/listinfo/use-livecode >>>> >>>> _______________________________________________ >>>> use-livecode mailing list >>>> use-livecode@lists.runrev.com >>>> Please visit this url to subscribe, unsubscribe and manage your >>>> subscription preferences: >>>> http://lists.runrev.com/mailman/listinfo/use-livecode >>> >>> >>> _______________________________________________ >>> use-livecode mailing list >>> use-livecode@lists.runrev.com >>> Please visit this url to subscribe, unsubscribe and manage your >>> subscription preferences: >>> http://lists.runrev.com/mailman/listinfo/use-livecode >> >> _______________________________________________ >> use-livecode mailing list >> use-livecode@lists.runrev.com >> Please visit this url to subscribe, unsubscribe and manage your subscription >> preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode
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