Douglas Schwarz

John,

Welcome to the fun of floating-point arithmetic. First, the duplicate points *are* removed, but this is not obvious unless you display all the digits of the result. For your third example, the four "duplicates" are actually all different, but only in the final bit (you can see it with "format hex"). I don't think there's anything I can do to make this work correctly in all cases.

Second, why should something fail if an intersection occurs at a segment boundary? Some people would like to consider this a proper intersection and others not (I know this from several discussions on the topic). As a user, you will have to evaluate the results you get for your particular application.

In many real world applications, where the two curves are formed from real data, this issue never comes up at all. It's (mostly) only from textbook type problems that you'll see this behavior.

Doug

Andrew,

No, they aren't supposed to be displayed. I realize that it's not ideal, but there are two problems with displaying them. (1) There's not enough room. Remember, we have to display both the list of files on the left and the chosen files on the right. To display additional information would simply make the figure too wide. (2) It would be difficult (maybe impossible) to get multiple columns to line up without using a monospaced font. A monospaced font would take up even more room and just exacerbate problem 1.

Those are my reasons, but I will think about your request and if I can come up with a way to do it without sacrificing appearance or functionality I'm not opposed.

Doug

Sorry, I am a beginner in MATLAB and I am not sure what the input arguments in these function mean. There are many input argument.... I have a struct array (conists of files with names ex.123_1, 123_2, etc) A <3000*1> struct and I want to sort it according to name of files which are there. How shoud I use this function... Please help me.. best wiches Katya

thanks a lot!!! great