Function editing box

[joecar]

I like DPlot very much and use it almost daily, excellent software.

Questions/Suggestions:

a. The "Y=" function editing box is very small, is there a way to make it sizable...?
For example, in the drop down the equations I have entered all look the same because the box is too small, see example equation below.

b. The legend titles are very limited in the number of characters, the titles of my equations all look the same because they are truncated, see example equation below.

c. Is there a way to name constants other than A thru K, see example equation below I need l and r.

Thanks.


Example equations:

y' = -r * sin(x) -r^2 * sin(x) * cos(x)/sqrt(l^2 - r^2 * sin(x)^2)

y" = -r * cos(x) - r^2 * (cos(x)^2 - sin(x)^2)/sqrt(l^2 - r^2 * sin(x)^2) - r^4 * sin(x)^2 * cos(x)^2/sqrt(l^2 - r^2 * sin(x)^2)^3

[DPlotAdmin]

I like DPlot very much and use it almost daily, excellent software.

Thanks very much!

a. No need to make you resize it; I'll just make it bigger.

b. I've needed to do this for a while now (titles too). It would be trivially easy to change in DPlot. The not-quite-so-trivial problem is the DPLOTLIB interface: legend entries are limited to 80 characters there. I can (and will) of course also change those, but I'd like to first take a while to decide what else needs changing and/or what other information should go in the DPLOT structure so that I'm not making another revision too soon. More information than you wanted to know, sorry Short version is it will get done.

c. This one's a bit tougher, for reasons that wouldn't be obvious. L through T are (potentially) used by the Y=f(X,Y1,Y2,...) command as substitutions for Y1 through Y9. I've never been real happy with how I'm doing this because, for one thing, you can only operate on the first 9 curves. It will be changed, but probably not soon.

[joecar]

David, thanks for your response.

Also, I'm wondering how to display zeros (I didn't see it under the Info menu);
do I create Y=0 and find intersections with this...?

[DPlotAdmin]

That would be the easiest way, yes. I'll think about adding a command to automate this.

[joecar]

David, thanks, appreciate it.