From: Raymond T. <toy...@gm...> - 2014-03-28 18:40:20
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>>>>> "velten" == velten <kai...@hs...> writes: velten> I'll try errcatch. I don't want that message in a program used by velten> practitioners who occasionally enter invalid limits for plots, which are velten> still valid ... these people don't like any kind of "mathematical" velten> messages ... Well, I hate systems like that. You prevent error messages so now the user wonders why there's no plot or why the result is just junk. And without the message, you have no idea where to look for this, except to look, painstakingly, at every single line of input to see what the mistake is. And it's really easy to, say, not notice that the plot limits are wrong (because you don't know the syntax well), or that you're erroneously dividing by zero somewhere, and on and on. Yuck! Ray |